4,065 results match your criteria Dental Materials [Journal]


Three-dimensional assessment of proximal contact enamel using optical coherence tomography.

Dent Mater 2019 Feb 12. Epub 2019 Feb 12.

Department of Cariology and Operative Dentistry, Division of Oral Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.

Objective: The purpose of this study was to detect and investigate the association of enamel microcracks with demineralization at proximal contact areas of premolars, using 3D swept-source optical coherence tomography (SS-OCT).

Methods: Extracted maxillary and mandibular premolars (n=50 each), without any visible tooth cracks, were examined for demineralization of interproximal contact areas, using the International Caries Detection and Assessment System (ICDAS). SS-OCT was used to evaluate demineralization and detect microcracks. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.008DOI Listing
February 2019

File-splitting multilayer vs monolithic Y-TZP: Fatigue flexural strength and loading stresses by finite element analysis.

Dent Mater 2019 Feb 8. Epub 2019 Feb 8.

Department of Restorative Dentistry, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil. Electronic address:

Objective: To compare file-splitting multilayer (fused and cemented) with monolithic Y-TZP on the fatigue flexural strength and finite element analysis (FEA) stresses. Additionally, to verify the effect of the material under tension in multilayer Y-TZP.

Methods: Disc-shaped (diameter: 14. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.014DOI Listing
February 2019

Influence of veneer pore defects on fracture behavior of bilayered lithium disilicate glass-ceramic crowns.

Dent Mater 2019 Feb 8. Epub 2019 Feb 8.

Department of Prosthodontics, Guanghua School of Stomatology, Sun Yat-sen University; Guangdong Engineering Research Center of Technology and Materials for Oral Reconstruction, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China. Electronic address:

Objective: To identify the conditions under which fabrication pore defects within veneering porcelain in bilayered lithium disilicate glass-ceramic (LDG) crowns will influence and jeopardize the mechanical integrity of the structure.

Methods: Thirty standardized molar crowns (IPS e.max Press) were fabricated and microCT scanned to 3D-analyze the size, morphology and distribution of pores in veneering porcelain, followed by in vitro fracture test and SEM fractographic observation. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.016DOI Listing
February 2019
1 Read

Thermal induced deflection of a porcelain-zirconia bilayer: Influence of cooling rate.

Dent Mater 2019 Feb 6. Epub 2019 Feb 6.

Vita Zahnfabrik GmbH, Bad Sachingen, Germany.

Objective: To determine the thermal expansion of a porcelain (VM9) and tetragonal zirconia (Y-TZP) as well as the deflection upon re-heating and cooling of a bilayer fabricated from these two materials after slow and rapid cooling during initial fabrication.

Methods: The coefficient of thermal expansion (CTE) of bulk porcelain and Y-TZP as well as bilayer beam deflection was measured with a novel non-contact optical dilatometer. The influence of cooling rate during initial fabrication of the porcelain-zirconia bilayer and the bulk porcelain during subsequent heating and cooling is investigated. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.019DOI Listing
February 2019

Design and characterization of a chitosan-enriched fibrin hydrogel for human dental pulp regeneration.

Dent Mater 2019 Jan 31. Epub 2019 Jan 31.

Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR5305 CNRS/Université Lyon 1, UMS3444 BioSciences Gerland-Lyon Sud, Lyon, France; Université de Lyon, Université Lyon 1, Faculté d'Odontologie, Lyon, France; Hospices Civils de Lyon, Service d'Odontologie, Lyon, France. Electronic address:

Objective: Regenerating a functional dental pulp in the pulpectomized root canal has been recently proposed as a novel therapeutic strategy in dentistry. To reach this goal, designing an appropriate scaffold able to prevent the growth of residual endodontic bacteria, while supporting dental pulp tissue neoformation, is needed. Our aim was to create an innovative cellularized fibrin hydrogel supplemented with chitosan to confer this hydrogel antibacterial property. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.018DOI Listing
January 2019

Effects of the reinforced cellulose nanocrystals on glass-ionomer cements.

Dent Mater 2019 Jan 30. Epub 2019 Jan 30.

Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil.

Objective: Glass-ionomer cements (GICs) modified with cellulose nanocrystals (CNs) were characterized and evaluated for compressive strength (CS), diametral tensile strength (DTS) and fluoride release (F).

Methods: Commercially available GICs (Maxxion, Vidrion R, Vitro Molar, Ketac Molar Easy Mix and Fuji Gold Label 9) were reinforced with CNs (0.2% by weight). Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.006DOI Listing
January 2019
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Effect of pulse-width-modulated LED light on the temperature change of composite in tooth cavities.

Dent Mater 2019 Jan 30. Epub 2019 Jan 30.

Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, South Korea. Electronic address:

Objective: The purpose of this study was to investigate the effects of the radiant emittance and cure time of pulse width modulation (PWM)-controlled LED light on the temperature change of composite and dentin.

Methods: Class I cavities (M-D 6mm, B-L 4mm, Depth 2.5mm) were prepared on 30 extracted human molars and vertically sectioned to expose the mesial side of the cavity and tooth. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.009DOI Listing
January 2019
1 Read

Effectiveness of pre-silanization in improving bond performance of universal adhesives or self-adhesive resin cements to silica-based ceramics: Chemical and in vitro evidences.

Dent Mater 2019 Jan 30. Epub 2019 Jan 30.

Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China. Electronic address:

Objectives: To examine effectiveness of pre-silanization in improving bond performance of multipurpose products such as universal adhesives or self-adhesive resin cements to silica-based ceramics.

Methods: The present study investigated reactions between silanol groups of γ-methacryloxypropyltrimethoxysilane (γ-MPS) and silica, dehydration self-condensation of γ-MPS, and condensation polymerization between γ-MPS and 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) by using thermodynamic calculations. Shear bond strength (SBS) tests were used to evaluate the influence of pre-silanization on resin bonding when a silane-containing universal adhesive, a silane-unknown universal adhesive, or two self-adhesive resin cements were applied for bonding lithium disilicate to resin. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.010DOI Listing
January 2019

Influence of external energy sources on the dynamic setting process of glass-ionomer cements.

Dent Mater 2019 Mar 30;35(3):450-456. Epub 2019 Jan 30.

Department of Dentistry, State University of Maringa, Av. Mandacaru 1550, 87080-000 Maringá, PR, Brazil. Electronic address:

Objective: To evaluate the influence of external energy sources on the dynamic setting process of glass-ionomer restorative materials.

Methods: Eighteen brands of GIC were studied: Bioglass R (Biodinâmica; G1), Chemfil Rock (Dentsply; G2), Equia Forte (GC; G3), Gold Label 2 (GC; G4), Gold Label 9 (GC; G5), Glass Ionomer Cement Type II - (Shofu; G6), Ionglass R (Maquira; G7), Ion Z (FGM; G8), Ionomaster (Wilcos; G9), Ionofil Plus (Voco; G10), Ionostar Plus (Voco; G11), Ketac Molar easymix (3M ESPE; G12), Magic Glass R (Vigodent; G13), Maxxion R (FGM; G14), Riva Self Cure (SDI; G15), Vidrion R (SS White; G16), Vitro Fil R (Nova DFL; G17) and Vitro Molar (Nova DFL; G18). LED, halogen light or ultrasound (n=20 for each set) applied for 30s was used to activate setting, and a control group of each material was allowed to set without activation. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183057
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http://dx.doi.org/10.1016/j.dental.2019.01.003DOI Listing
March 2019
2 Reads

Long-term elution of monomers from resin-based dental composites.

Dent Mater 2019 Mar 28;35(3):477-485. Epub 2019 Jan 28.

KU Leuven BIOMAT, Department of Oral Health Sciences, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000 Leuven, Belgium. Electronic address:

Objective: To bridge the gap between the current alarming literature on resin-based dental materials and the limited clinical observations, more precise knowledge on the actual quantity of released compounds should be acquired. The objective of this study was to quantify the long-term elution of various compounds from resin-based dental composites during one year.

Methods: Eight materials were investigated: G-aenial Anterior, G-aenial Posterior, Venus, Venus Pearl, Venus Diamond, Ceram X mono, Dyract and Filtek Supreme XTE. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183120
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http://dx.doi.org/10.1016/j.dental.2019.01.005DOI Listing
March 2019
2 Reads

Fatigue performance of adhesively cemented glass-, hybrid- and resin-ceramic materials for CAD/CAM monolithic restorations.

Dent Mater 2019 Jan 24. Epub 2019 Jan 24.

PhD Graduate Program in Oral Science (Prosthodontics Unit), Faculty of Odontology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil. Electronic address:

Objective: To evaluate the fatigue failure load, number of cycles until failure, and survival probability of adhesively cemented materials with different microstructures (glass-, hybrid- and resin-ceramic) used to manufacture CAD/CAM monolithic restorations.

Methods: Disc-shaped specimens (n=15; Ø=10mm; thickness=1.0mm) were produced from CAD/CAM blocks as follows: feldspathic (FEL); leucite (LEU); lithium disilicate (LD); zirconia-reinforced lithium silicate (ZRLS); polymer-infiltrated ceramic network (PICN); and resin nanoceramic (RNC). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183055
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http://dx.doi.org/10.1016/j.dental.2019.01.013DOI Listing
January 2019
6 Reads

Production tolerance of conventional and digital workflow in the manufacturing of glass ceramic crowns.

Dent Mater 2019 Mar 25;35(3):486-494. Epub 2019 Jan 25.

Institution of Odontology, Göteborg university, Göteborg, Sweden. Electronic address:

Objectives: To measure and compare the size of the cement gap of wax and polymer copings and final glass-ceramic crowns, produced from conventional and digital workflows, one additive and one subtractive.

Methods: Thirty wax copings were made by conventional manual layering technique and modeling wax on stone models with spacer varnish simulating a cement spacer. The wax copings were embedded and press-cast in lithium disilicate glass ceramic. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.015DOI Listing

Validation of in-vitro tests of zirconia-ceramic inlay-retained fixed partial dentures: A finite element analysis.

Dent Mater 2019 Mar 25;35(3):e53-e62. Epub 2019 Jan 25.

Department of Prosthodontics, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany.

Objective: In the past, discrepancies between laboratory results and clinical behavior have been observed for all-ceramic restorations. This analysis of fracture resistance of zirconia-based inlay-retained fixed partial dentures (IRFPDs) aimed at identifying correlations between an in-vitro test setup and the clinical situation. The effects of tooth material, tooth mobility, restoration design, load direction, and different cements were taken into account. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.017DOI Listing

Lifetime prediction of veneered versus monolithic lithium disilicate crowns loaded on marginal ridges.

Dent Mater 2019 Mar 25;35(3):511-522. Epub 2019 Jan 25.

Department of Prosthodontics and Periodontology, University of São Paulo, Bauru School of Dentistry, Bauru, SP, Brazil. Electronic address:

Objective: To evaluate the probability of survival of monolithic and porcelain veneered lithium disilicate crowns comprised by a conventional or modified core when loaded on marginal ridges.

Methods: Lithium disilicate molar crowns (n=30) were fabricated to be tested at mesial and distal marginal ridges and were divided as follows: (1) bilayered crowns with even-thickness 0.5mm framework (Bi-EV); (2) bilayered crowns with modified core design (Bi-M-lingual collar connected to proximal struts), and: (3) monolithic crowns (MON). Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.007DOI Listing

HEMA modulates the transcription of genes related to oxidative defense, inflammatory response and organization of the ECM in human oral cells.

Dent Mater 2019 Mar 25;35(3):501-510. Epub 2019 Jan 25.

Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, D-30625 Hannover, Germany. Electronic address:

Objectives: 2-Hydroxyethyl methacrylate (HEMA) is a widely used monomer of dental resin composite materials. Incomplete curing of resins leads to elution of HEMA, which may come in contact with different cells in oral tissues. We aimed to analyze the impact of HEMA on the transcription of genes participating in detoxification of oxidative stress, inflammatory response and organization of the extracellular matrix (ECM) using human gingival fibroblasts (HGFs) and human oral keratinocytes (OKF6/TERT2). Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.011DOI Listing

Assessment of metal sleeve-free 3D-printed implant surgical guides.

Dent Mater 2019 Mar 23;35(3):468-476. Epub 2019 Jan 23.

Department of Prosthodontics/Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Republic of Korea. Electronic address:

Objectives: The aim of the present study was to investigate the adaptation and guide hole tolerance of metal sleeve-free computer-assisted implant surgical guides fabricated with 3D printers.

Methods: An implant surgical guide for full-guided implant placement was designed with a total of eight different guide holes. Ten implant surgical guides (n=10) were fabricated from the same design with each of five in-office 3D printers (D1, FOR, ONE, PER, and ZEN) using compatible printing materials. Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.001DOI Listing

Investigation into the accuracy and measurement methods of sequential 3D dental scan alignment.

Dent Mater 2019 Mar 23;35(3):495-500. Epub 2019 Jan 23.

Department of Restorative Dentistry, Leeds School of Dentistry, Clarendon Way, Leeds LS2 9LU, UK.

Objectives: Alignment procedures have yet to be standardised and may influence the measurement outcome. This investigation assessed the accuracy of commonly used alignment techniques and their impact on measurement metrics.

Methods: Datasets of 10 natural molar teeth were created with a structured-light model-scanner (Rexcan DS2, Europac 3D, Crewe). Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.012DOI Listing
March 2019
1 Read

Inhibition of secondary caries in vitro by addition of chlorhexidine to adhesive components.

Dent Mater 2019 Mar 22;35(3):422-433. Epub 2019 Jan 22.

Department of Pediatric Dentistry, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Giessen, Schlangenzahl 14, D-35392 Giessen, Germany.

Objective: To investigate secondary caries inhibition after dentine pre-treatment with 2% CHX, experimental addition of CHX in primer and adhesive of a 3-step adhesive system, and industrial addition od CHX in a 2-step adhesive system.

Materials And Method: Sixty Class-V cavities were restored according to the adhesive protocol (n=12): 1) control group, Scotchbond Multi-Purpose, 3M (CTRL), 2) 2% CHX dentine pre-treatment (DENT), 3) 0.1% CHX in primer (PRIM), 4) 0. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183075
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http://dx.doi.org/10.1016/j.dental.2018.12.002DOI Listing
March 2019
3 Reads

Hydrophobicity of graphene as a driving force for inhibiting biofilm formation of pathogenic bacteria and fungi.

Dent Mater 2019 Mar 21;35(3):403-413. Epub 2019 Jan 21.

Faculty of Dentistry, National University of Singapore, Singapore; Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore. Electronic address:

Objective: To evaluate the surface and wettability characteristics and the microbial biofilm interaction of graphene coating on titanium.

Methods: Graphene was deposited on titanium (Control) via a liquid-free technique. The transfer was performed once (TiGS), repeated two (TiGD) and five times (TiGV) and characterized by AFM (n=10), Raman spectroscopy (n=10), contact angle and SFE (n=5). Read More

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http://dx.doi.org/10.1016/j.dental.2018.09.016DOI Listing

Effect of eluates from zirconia-modified glass ionomer cements on DNA double-stranded breaks in human gingival fibroblast cells.

Dent Mater 2019 Mar 11;35(3):444-449. Epub 2019 Jan 11.

Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Germany; Walther Straub Institute of Pharmacology and Toxicology, Faculty of Medicine, LMU Munich, Germany.

Objective: To formulate novel glass ionomer cements (GICs) containing zirconia (nanoparticles (NPs) and micro-particles (MPs)) and investigate the genotoxic effect of their eluates on DNA double-strand breaks of human gingival fibroblasts (HGFs) in vitro using a γ-H2AX fluorescent assay.

Methods: GIC (control, C), 10%ZrONPsGIC (T1) and 10%ZrOMPsGIC (T2) were prepared per the manufacturer's instructions (hand-mixed, P/L=3.4:1w/w%). Read More

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http://dx.doi.org/10.1016/j.dental.2019.01.004DOI Listing
March 2019
2 Reads

Antimicrobial and anti-inflammatory drug-delivery systems at endodontic reparative material: Synthesis and characterization.

Dent Mater 2019 Mar 11;35(3):457-467. Epub 2019 Jan 11.

Department of Conservative Dentistry, Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2492, Porto Alegre, Rio Grande do Sul 90035-003, Brazil. Electronic address:

Objective: The aim of this study was to synthesize and characterize an experimental endodontic paste.

Methods: An experimental endodontic paste (EX) was characterized by its particle size, zeta potential, drug content and morphology. The powder of EX is composed of amoxicillin microspheres, calcium tungstate and α-tricalcium phosphate, mixed with an indomethacin nanocapsules suspension. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183065
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http://dx.doi.org/10.1016/j.dental.2019.01.002DOI Listing
March 2019
6 Reads

Reporting of light irradiation conditions in 300 laboratory studies of resin-composites.

Dent Mater 2019 Mar 31;35(3):414-421. Epub 2018 Dec 31.

Dalhousie University, Faculty of Dentistry, Dental Clinical Sciences, Halifax, Nova Scotia, Canada. Electronic address:

Objective: To evaluate how the light delivered to resin-composites was described in recent articles.

Method: PubMed was searched for 300 articles published between January 2017 and May 2018 with keywords relating to photocuring of dental materials. The articles examined a wide range of resin-composite properties and performance. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183113
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http://dx.doi.org/10.1016/j.dental.2018.12.001DOI Listing
March 2019
8 Reads

Effects of water aging on the mechanical and anti-biofilm properties of glass-ionomer cement containing dimethylaminododecyl methacrylate.

Dent Mater 2019 Mar 29;35(3):434-443. Epub 2018 Dec 29.

Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University Hospital, 66421 Homburg, Saar, Germany. Electronic address:

Objectives: The aims of this study were to investigate the effects of water aging for up to 6months on the mechanical and anti-biofilm properties of a novel antibacterial glass ionomer cement (GIC) containing dimethylaminododecyl methacrylate (DMADDM).

Methods: GIC specimens (n=180) which contained DMADDM (0wt.%, 1. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183075
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http://dx.doi.org/10.1016/j.dental.2018.12.003DOI Listing
March 2019
2 Reads
3.769 Impact Factor

Evidence to the role of interflavan linkages and galloylation of proanthocyanidins at sustaining long-term dentin biomodification.

Dent Mater 2019 Feb 21;35(2):328-334. Epub 2018 Dec 21.

Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA; Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA. Electronic address:

Objectives: The interactivity of proanthocyanidins (PACs) with collagen modulates dentin matrix biomechanics and biostability. Herein, PAC extracts selected based on structural diversity were investigated to determine key PAC features driving sustained effects on dentin matrices over a period of 18months.

Methods: The chemical profiles of PAC-rich plant sources, Pinus massoniana (PM), Cinnamomum verum (CV) and Hamamelis virginiana (HV) barks, as well as Vitis vinifera (VV) seeds, were obtained by diol HPLC analysis after partitioning of the extracts between methyl acetate and water. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.029DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346742PMC
February 2019
1 Read
3.769 Impact Factor

Influence of residual thermal stresses on the edge chipping resistance of PFM and veneered zirconia structures: Experimental and FEA study.

Dent Mater 2019 Feb 20;35(2):344-355. Epub 2018 Dec 20.

Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil.

Objective: Chipping fractures of the veneering porcelain are frequently reported for veneered all-ceramic crowns. In the present study, the edge chipping test is used to measure the toughness and the edge chipping resistance of veneered zirconia and porcelain-fused-to-metal (PFM). The aim is to describe an edge chipping method developed with the use of a universal testing machine and to verify the accuracy of this method to determine the influence of residual thermal stresses on the chipping fracture resistance of veneering porcelain. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183065
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http://dx.doi.org/10.1016/j.dental.2018.11.034DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6342632PMC
February 2019
6 Reads

The role of polymerization in adhesive dentistry.

Dent Mater 2019 Jan 13;35(1):e1-e22. Epub 2018 Dec 13.

Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna and IGM-CNR, Unit of Bologna, Italy.

Adhesive systems are resin-based materials that reach their final mechanical properties through a polymerization process. Previous literature correlated the failure of the adhesive interface to low polymer setting. Adhesives systems are elaborate mixtures of different molecules of both hydrophilic and hydrophobic nature, included in the formulation to adequately infiltrate the complex dental substrate or added to prolong the stability of the adhesive layer over time. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.012DOI Listing
January 2019
1 Read

Translational research on clinically failed zirconia implants.

Dent Mater 2019 Feb 12;35(2):368-388. Epub 2018 Dec 12.

HEPIA, University of Applied Sciences - Western Switzerland (HES-SO), Geneva, Switzerland. Electronic address:

Objectives: To provide fractographic analysis of clinically fractured zirconia implants recovered with their cemented crown. To calculate bending moments, corresponding stress and crack onset location on the implant's fracture surface using a mathematical model integrating spatial coordinates of the crown-implant part and occlusal loading obtained from 2D and 3D images.

Methods: 15 fractured zirconia implants parts (11 posterior and 4 anterior) with their all- ceramic crowns still cemented on it were recovered. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.033DOI Listing
February 2019
1 Read

Biomimetic regulation of dentine remineralization by amino acid in vitro.

Dent Mater 2019 Feb 10;35(2):298-309. Epub 2018 Dec 10.

The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237# Luoyu Road, Wuhan 430079, China. Electronic address:

Objective: The aim of this study was to evaluate the effect of conditioning solutions containing DL-aspartic amino (Asp) on dentine remineralization induced by bioactive glass 45S5 (BAG) in a simulated oral environment.

Methods: Sixty dentine discs from human third molars were used. Dentine specimens were treated with ethylene diamine tetraacetic acid (EDTA) to create a partially demineralization model and randomly divided to 4 groups: Artificial saliva (AS) group, Asp group (pretreated with Asp and remineralized with distilled water), BAG group (pretreated with distilled water and remineralized by BAG), Asp-BAG group (pretreated with Asp and remineralized by BAG). Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.026DOI Listing
February 2019
1 Read
3.769 Impact Factor

Integrating the PILP-mineralization process into a restorative dental treatment.

Dent Mater 2019 Jan 10;35(1):53-63. Epub 2018 Dec 10.

Department of Preventative and Restorative Dental Sciences, UCSF School of Dentistry, San Francisco, CA, USA. Electronic address:

The addition of charged polymers, like poly-aspartic acid (pAsp), to mineralizing solutions allows for transport of calcium and phosphate ions into the lumen of collagen fibrils and subsequent crystallization of oriented apatite crystals by the so-called Polymer-Induced Liquid Precursor (PILP) mineralization process, leading to the functional recovery of artificial dentin lesions by intrafibrillar mineralization of collagen.

Objective: To evaluate the feasibility of applying the PILP method as part of a restorative treatment and test for effectiveness to functionally remineralize artificial lesions in dentin.

Materials And Methods: Two methods of providing pAsp to standardized artificial lesions during a restorative procedure were applied: (A) pAsp was mixed into commercial RMGI (resin modified glass ionomer) cement formulations and (B) pAsp was added at high concentration (25mg/ml) in solution to rehydrate lesions before restoring with a RMGI cement. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183105
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http://dx.doi.org/10.1016/j.dental.2018.11.030DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312741PMC
January 2019
13 Reads

Effect of slow-cooling protocol on biaxial flexural strengths of bilayered porcelain-ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/A) disks.

Dent Mater 2019 Feb 3;35(2):270-282. Epub 2018 Dec 3.

Section Medical Materials Science & Technology, University Hospital Tübingen, Osianderstr. 2-8, 72076 Tübingen, Germany. Electronic address:

Objective: The present study investigated the biaxial flexural strengths of bilayered ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/A) disks with various layering porcelains veneered using a slow-cooling protocol.

Methods: Five porcelain materials (VITA VM9, Cercon Ceram Kiss, and Vintage ZR with experimental coefficient of thermal expansions; CTEs of 8.45, 9. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.024DOI Listing
February 2019
2 Reads

Biomimetic transformation of polyphosphate microparticles during restoration of damaged teeth.

Dent Mater 2019 Feb 3;35(2):244-256. Epub 2018 Dec 3.

ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany. Electronic address:

Objective: In the present study, we investigated the fusion process between amorphous microparticles of the calcium salt of the physiological polymer comprising orthophosphate units, of inorganic polyphosphate (polyP), and enamel.

Methods: This polymer was incorporated as an ingredient into toothpaste and the fusion process was studied by electron microscopy and by synchrotron-based X-ray tomography microscopy (SRXTM) techniques.

Results: The data showed that toothpaste, supplemented with the amorphous Ca-polyP microparticles (aCa-polyP-MP), not only reseals tooth defects on enamel, like carious lesions, and dentin, including exposed dentinal tubules, but also has the potential to induce re-mineralization in the enamel and dentin regions. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.014DOI Listing
February 2019
1 Read
3.769 Impact Factor

Synergistic effects of VE-TPGS and riboflavin in crosslinking of dentine.

Dent Mater 2019 Feb 7;35(2):356-367. Epub 2018 Dec 7.

UWA Dental School, University of Western Australia, 17 Monash Avenue, Nedlands, WA 6009, Australia. Electronic address:

Objective: Effect of d-alpha-tocopheryl poly(ethyleneglycol)-1000-succinate (VE-TPGS) with riboflavin-5'-phosphate solution on crosslinking of dentine collagen was investigated to analyze collagen's structural integrity.

Methods: VE-TPGS was added to RF-solution, at RF/VE-TPGS (w/w) ratios of 0.125/0. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183114
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http://dx.doi.org/10.1016/j.dental.2018.11.031DOI Listing
February 2019
7 Reads

Miniature specimens for fracture toughness evaluation of dental resin composites.

Dent Mater 2019 Feb 7;35(2):283-291. Epub 2018 Dec 7.

Anthony Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD 20899, USA. Electronic address:

Objective: Millimeter-scale ("miniature") specimens enable in-situ evaluation of mechanical properties of engineering materials at reduced cost. Here three such specimens for measuring fracture toughness (K) are developed and implemented to new dental materials. The latter include concurrent methacrylate-based and new ether-based resin composites designed to reduce polymerization stress and enhance service life in restored teeth. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183108
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http://dx.doi.org/10.1016/j.dental.2018.11.023DOI Listing
February 2019
2 Reads

Titanium dioxide and modified titanium dioxide by silver nanoparticles as an anti biofilm filler content for composite resins.

Dent Mater 2019 Feb 7;35(2):e36-e46. Epub 2018 Dec 7.

Department of Restorative Dentistry, Araraquara School of Dentistry, University of São Paulo State - UNESP, Araraquara, SP 14801-903, Brazil. Electronic address:

Objective: The aim of this study was to evaluate the antibacterial activity of a composite resin modified by TiO and TiO/Ag nanoparticles and their influence over different properties.

Methods: TiO and TiO/Ag NPs were synthesized by polymeric precursor and microwave-assisted hydrothermal methods and then, characterized by different techniques. Direct contact test was performed using Filtek™ Z350XT blended with 0. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.002DOI Listing
February 2019
1 Read

Dental pulp stem cells in chitosan/gelatin scaffolds for enhanced orofacial bone regeneration.

Dent Mater 2019 Feb 7;35(2):310-327. Epub 2018 Dec 7.

Department of Materials Science and Technology, University of Crete, Heraklion, Greece; Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), Heraklion, Greece. Electronic address:

Objective: Biomimetic chitosan/gelatin (CS/Gel) scaffolds have attracted great interest in tissue engineering of several tissues. However, limited information exists regarding the potential of combining CS/Gel scaffolds with oral cells, such as dental pulp stem cells (DPSCs), to produce customized constructs targeting alveolar/orofacial bone reconstruction, which has been the aim of the present study.

Methods: Two scaffold types, designated as CS/Gel-0. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.025DOI Listing
February 2019
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Whiteness difference thresholds in dentistry.

Dent Mater 2019 Feb 6;35(2):292-297. Epub 2018 Dec 6.

Post-Graduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, Passo Fundo, RS, Brazil.

Objective: To determine the visual whiteness thresholds for esthetic dentistry using the whiteness index for dentistry based on CIELAB color space (WI).

Methods: A total of 60 observers (Dentists and Laypersons; n=30) from three research sites participated in the study. A psychophysical experiment based on visual assessments of simulated images of teeth on a calibrated display was performed. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.022DOI Listing
February 2019
3 Reads

Uniaxial/biaxial flexure strengths and elastic properties of resin-composite block materials for CAD/CAM.

Dent Mater 2019 Feb 7;35(2):389-401. Epub 2018 Dec 7.

Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, South Korea; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan 31116, South Korea. Electronic address:

Objective: Comparing strengths under different loading conditions provides useful information on the mechanical behaviour of restorative materials under multiaxial masticatory loading in the oral cavity. The aims of this study was to investigate the flexural strengths and the reliability of resin-composite blocks for CAD/CAM by uniaxial and biaxial flexure tests and to compare the elastic properties measured by different methods including digital image correlation (DIC).

Methods: Four resin-composite blocks for CAD/CAM, namely, VE (Vita Enamic), LU (Lava Ultimate), MD (Mazic Duro), and CS (Cerasmart), were investigated. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183106
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http://dx.doi.org/10.1016/j.dental.2018.11.032DOI Listing
February 2019
4 Reads

A randomized controlled evaluation of posterior resin restorations of an altered resin modified glass-ionomer cement with claimed bioactivity.

Dent Mater 2019 Feb 7;35(2):335-343. Epub 2018 Dec 7.

Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.

Objective: The objective of this randomized controlled prospective clinical trial was to evaluate the short time clinical behaviour of an altered resin modified glass-ionomer cement (RMGIC), which is claimed to possess bioactivity, in posterior restorations and to compare it intraindividually with a nanofilled resin composite.

Methods: Totally 78 pairs Class II and 4 pairs Class I restorations were placed in 29 female and 38 male participants with a mean age of 58.3 years (range 37-86). Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.027DOI Listing
February 2019
2 Reads

In vitro cytotoxicity of dental adhesives: A systematic review.

Dent Mater 2019 Feb 4;35(2):195-205. Epub 2018 Dec 4.

Full Professor, Endodontics and Geriatric Dentistry Department, Laboratory Experimental of Culture Cell (LECCel), Faculty of Dentistry, University Federal Fluminense (UFF), Niteroi, RJ, Brazil. Electronic address:

Objectives: The increased demand for esthetics and minimally invasive tooth restorations resulted in a rapid development of adhesive dentistry. However, much controversy remains about the safe use and cytotoxic effects of different groups of dental adhesives. The present study performed a systematic review to identify the answer to the following question: are self-etch adhesives more cytotoxic than those employing the etch-and-rinse system?

Methods: This systematic review was performed in accordance with the PRISMA statement; a quality assessment for in vitro studies was conducted using the ToxRTool. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.028DOI Listing
February 2019
2 Reads

Effect of exposure time and pre-heating on the conversion degree of conventional, bulk-fill, fiber reinforced and polyacid-modified resin composites.

Dent Mater 2019 Feb 28;35(2):217-228. Epub 2018 Nov 28.

Department of General and Physical Chemistry, University of Pécs, 6 Ifjúság Street, Pécs, H-7624, Hungary; János Szentágothai Research Center, 20 Ifjúság Street, Pécs, H-7624, Hungary.

Objective: To determine the degree of conversion (DC) of different type of resin-based composites (RBC) in eight-millimeter-deep clinically relevant molds, and investigate the influence of exposure time and pre-heating on DC.

Methods: Two-millimeter-thick samples of conventional sculptable [FiltekZ250 (FZ)], flowable [Filtek Ultimate Flow (FUF)] and polyacid-modified [Twinky Star Flow (TS)] RBCs, and four-millimeter-thick samples of flowable bulk-fill [Filtek Bulk Fill Flow (FBF), Surefil SDR (SDR)] and sculptable fibre-reinforced [EverX Posterior (EX)] RBCs were prepared in an eight-millimeter-deep mold. The RBCs temperature was pre-set to 25, 35 and 55°C. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.017DOI Listing
February 2019
1 Read

Antibacterial effects of polymeric PolymP-n Active nanoparticles. An in vitro biofilm study.

Dent Mater 2019 Jan 29;35(1):156-168. Epub 2018 Nov 29.

ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain.

Objective: to study the antibacterial effect of polymeric PolymP-n Active nanoparticles using an in vitro subgingival biofilm model.

Methods: Hydroxyapatite discs coated with five modalities of nanoparticles (NPs): NPs, NPs doped with zinc, calcium, silver and doxycycline, PBS as control, and Streptococcus oralis, Actinomyces naeslundii, Veillonella parvula, Fusobacterium nucleatum, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans were studied in a static in vitro biofilm model (12, 24, 48, and 72h). Nano-roughness of the different disc surfaces (SRa, in nm) and morphological characteristic of the biofilms (thickness (μm) and bacterial viability) were studied by different microscopy modalities. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.015DOI Listing
January 2019
1 Read

Influence of placement instruments on handling of dental composite materials.

Dent Mater 2019 Feb 30;35(2):e47-e52. Epub 2018 Nov 30.

UKR University Hospital Regensburg, Department of Prosthetic Dentistry, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany. Electronic address:

Objective: Applicability and stickiness of dental composites are influential factors for the properties of those materials and so indirectly affect function, longevity and esthetics of composite restorations in the clinic. Thus, this in vitro study aimed for the influence of different placement instruments' diameter, geometries and coatings on the handling of uncured resin composite materials.

Methods: A survey about application technique of resin composites, placement instrument diameter, geometry and coating, and application temperature was answered by 55 German dentists in private practice. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.010DOI Listing
February 2019
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Physical properties and cytotoxicity of antimicrobial dental resin adhesives containing dimethacrylate oligomers of Ciprofloxacin and Metronidazole.

Dent Mater 2019 Feb 29;35(2):229-243. Epub 2018 Nov 29.

Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada; Faculty of Dentistry, University of Toronto, Ontario, Canada. Electronic address:

Objective: Antimicrobial oligomers synthesized from ciprofloxacin (CF) and metronidazole (MN) were investigated for their potential use in dental adhesives.

Methods: Susceptibility of the cariogenic bacterium Streptococcus mutans UA159 to CF, MN, and CF/MN combination was evaluated. Hydrolytic stability and drug release from the oligomers was studied in buffer and simulated human salivary esterase conditions. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183049
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http://dx.doi.org/10.1016/j.dental.2018.11.016DOI Listing
February 2019
9 Reads

Residual strain mapping through pair distribution function analysis of the porcelain veneer within a yttria partially stabilised zirconia dental prosthesis.

Dent Mater 2019 Feb 30;35(2):257-269. Epub 2018 Nov 30.

Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom.

Objective: Residually strained porcelain is influential in the early onset of failure in Yttria Partially Stabilised Zirconia (YPSZ) - porcelain dental prosthesis. In order to improve current understanding it is necessary to increase the spatial resolution of residual strain analysis in these veneers.

Methods: Few techniques exist which can resolve residual stress in amorphous materials at the microscale resolution required. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.013DOI Listing
February 2019
2 Reads

Exceptional contact elasticity of human enamel in nanoindentation test.

Dent Mater 2019 Jan 30;35(1):87-97. Epub 2018 Nov 30.

Department of Conservative Dentistry, Division of Biomaterials and Engineering, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.

Objective: Tooth enamel has unsurpassed hardness and stiffness among mammalian tissue structures. Such stiff materials are usually brittle, yet mature enamel can survive for a lifetime. Understanding the nanoscale origin of enamel durability is important for developing advanced load-bearing biomaterials. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.005DOI Listing
January 2019
2 Reads

Positive correlation between fluoride release and acid erosion of restorative glass-ionomer cements.

Dent Mater 2019 Jan 29;35(1):135-143. Epub 2018 Nov 29.

Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil. Electronic address:

Objective: The aim of this study was to determine whether there is a correlation between acid erosion and fluoride release of conventional glass ionomer cements.

Methods: Ten specimens for each material were prepared for fluoride release tests and five for acid erosion tests separately. After placed in pH cycling solution, concentration of fluoride was measured by a fluoride-ion selective electrode each day for 15 days. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.007DOI Listing
January 2019
3 Reads

Optimal sandblasting conditions for conventional-type yttria-stabilized tetragonal zirconia polycrystals.

Dent Mater 2019 Jan 28;35(1):169-175. Epub 2018 Nov 28.

Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan. Electronic address:

Objective: To assess the influence of sandblasting conditions applied to conventional-type yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) on surface roughness, phase transformation, and biaxial flexural strength.

Methods: Commercially available Y-TZP (Lava Frame, 3M Dental Products) disks were used after sintering (specimen dimensions: 14mm in diameter and 1.2mm in thickness). Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.009DOI Listing
January 2019
1 Read

Impaired angiogenic differentiation of dental pulp stem cells during exposure to the resinous monomer triethylene glycol dimethacrylate.

Dent Mater 2019 Jan 28;35(1):144-155. Epub 2018 Nov 28.

Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, D-30625 Hannover, Germany. Electronic address:

Objective: Dental pulp stem cells (DPSCs) can differentiate into tissue specific lineages to support dental pulp regeneration after injuries. Triethylene glycol dimethacrylate (TEGDMA) is a widely used co-monomer in restorative dentistry with adverse effects on cellular metabolism. Aim of this study was to analyze the impact of TEGDMA on the angiogenic differentiation potential of DPSCs. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.006DOI Listing
January 2019
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Effect of titanium tetrafluoride addition on the physicochemical and antibacterial properties of Biodentine as intraorfice barrier.

Dent Mater 2019 Jan 1;35(1):185-193. Epub 2018 Dec 1.

Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.

Objective: To evaluate the influence of titanium tetrafluoride (TiF) incorporation on the physicochemical and antibacterial properties of Biodentine (BD; Septodont, Saint Maur des Faussés, France) as an intraorfice barrier material.

Methods: Three different proportions of TiF powder were used with BD; 1wt%, 2wt%, and 3wt%; respectively. BD without TiF addition was used as the control group. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01095641183033
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http://dx.doi.org/10.1016/j.dental.2018.11.019DOI Listing
January 2019
7 Reads

Novel in vitro comparative model of osteogenic and inflammatory cell response to dental implants.

Dent Mater 2019 Jan 30;35(1):176-184. Epub 2018 Nov 30.

Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA. Electronic address:

Objectives: Roughened dental implants promote mesenchymal stem cell (MSCs) osteoblastic differentiation, and hydrophilic modifications induce anti-inflammatory macrophages activation. While the effect of different surface modifications on osseointegration of commercial dental implants have been compared in vivo and clinically, the initial cellular response to these modifications often overlooked. We aimed to characterize the macrophage inflammatory response and MSC osteogenesis across different commercially available implants in vitro. Read More

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http://dx.doi.org/10.1016/j.dental.2018.11.011DOI Listing
January 2019
2 Reads