3,172 results match your criteria revealed cements

Effect of Boron and Water-to-Cement Ratio on the Performances of Laboratory Prepared Belite-Ye'elimite-Ferrite (BYF) Cements.

Materials (Basel) 2021 Aug 26;14(17). Epub 2021 Aug 26.

Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Campus Teatinos, Universidad de Málaga, 29010 Málaga, Spain.

The effect of superplasticiser, borax and the water-to-cement ratio on BYF hydration and mechanical strengths has been studied. Two laboratory-scale BYF cements-st-BYF (with β-CS and orthorhombic CAS¯) and borax-activated B-BYF (with α'-CS and pseudo-cubic CAS¯)-have been used, and both show similar particle size distribution. The addition of superplasticiser and externally added borax to BYF pastes has been optimised through rheological measurements. Read More

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The preparation and study on properties of calcium sulfate bone cement combined tuning silk fibroin nanofibers and vancomycin-loaded silk fibroin microspheres.

J Biomed Mater Res B Appl Biomater 2021 Sep 6. Epub 2021 Sep 6.

Department of Biomedical Engineering, Research Center for Nano-Biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.

In this study, a bioactive composite material based on calcium sulfate hemihydrate (CSH) bone cement was studied, which use calcium sulfate dihydrate (CSD) as coagulant and silk fibroin nanofibers (SFF) solution as the curing liquid, further loaded vancomycin silk fibroin microspheres (SFM/VCM). The drug release effect of bone cements caused by tuning weight content of SFM/VCM (0.5, 1, 2%) and the concentration of silk fibroin solution (SFS) (20, 60, 100 mg/mL) used for preparation of SFM was studied in this article. Read More

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September 2021

Comparative Evaluation of Two Glass Polyalkenoate Cements: An In Vivo Pilot Study Using a Sheep Model.

J Funct Biomater 2021 Aug 5;12(3). Epub 2021 Aug 5.

Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada.

Poly(methyl methacrylate) (PMMA) is used to manage bone loss in revision total knee arthroplasty (rTKA). However, the application of PMMA has been associated with complications such as volumetric shrinkage, necrosis, wear debris, and loosening. Glass polyalkenoate cements (GPCs) have potential bone cementation applications. Read More

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Longevity of Crown Margin Repairs Using Glass Ionomer Cement: A Retrospective Study.

Oper Dent 2021 Aug 19. Epub 2021 Aug 19.

Clinical Relevance: Repairing defective crown margins can extend the functional life of existing crowns.

Summary: Objective: The objective of this study was to determine the survival time of crown margin repairs (CMRs) with glass ionomer and resin-modified glass ionomer cements on permanent teeth using electronic dental record (EDR) data.Methods: We queried a database of EDR (axiUm; Exan Group, Coquitlam, BC, Canada) in the Indiana University School of Dentistry (IUSD), Indianapolis, IN, USA, for records of patients who underwent CMRs of permanent teeth at the Graduate Operative Dentistry Clinic. Read More

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Effect of Ca(OH) Addition on the Engineering Properties of Sodium Sulfate Activated Slag.

Materials (Basel) 2021 Jul 30;14(15). Epub 2021 Jul 30.

Magnel-Vandepitte Laboratory, Department of Structural Engineering and Building Materials, Ghent University, 9052 Ghent, Belgium.

Alkali-activated slag is considered as a sustainable construction material due to its environmentally friendly nature. To further promote the sustainable nature of alkali-activated slag, a sodium sulfate activator is suggested to be used since it can be obtained naturally and generates lower greenhouse gas emissions. However, the mixtures activated by sodium sulfate exhibit low early strength and very long setting times. Read More

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Effect of Water Storage on Hardness and Interfacial Strength of Resin Composite Luting Agents Bonded to Surface-Treated Monolithic Zirconia.

Dent J (Basel) 2021 Jul 4;9(7). Epub 2021 Jul 4.

Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece.

Background: Durable bonding between resin composite luting agents (CLA) and zirconia is still a matter of controversy. The purpose of this study was to evaluate the effect of water storage on hardness and interfacial strength of three CLA, a non-adhesive (Multilink Automix/ML), an adhesive (Panavia F 2.0/PF) and a self-adhesive (PermaCem 2. Read More

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Evaluation of a newly developed calcium fluoride nanoparticles-containing orthodontic primer: An in-vitro study.

J Mech Behav Biomed Mater 2021 10 17;122:104691. Epub 2021 Jul 17.

Orthodontic Department, College of Dentistry, University of Baghdad, Baghdad-Iraq. School of Dentistry, University of Dundee, UK. Electronic address:

Objectives: Fluoride and calcium ions have the ability to reduce the formation of white spot lesions (WSL) in enamel. This study aimed to develop a novel orthodontic primer that incorporates calcium fluoride nanoparticles (nCaF) and investigate its cytotoxic and physical properties as this primer could enhance the remineralization process when used with the conventional acid etching technique.

Materials And Methods: Three groups of the newly introduced primers were prepared by adding and mixing nCaF2 (Nanoshell Company, USA at 5%, 10%, 20% in weight) to Transbond™ XT orthodontic primers (3M-Unitek, Monrovia, USA). Read More

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October 2021

Prevention of Pulmonary Cement Embolism by Inferior Vena Cava Filter following Vertebroplasty-related Cement Intravasation.

J Radiol Case Rep 2021 Apr 30;15(4):17-27. Epub 2021 Apr 30.

Department of Radiology, Aventura Hospital & Medical Center, Miami, FL, USA.

A 77 year old woman with recent history of vertebroplasty for treatment of multiple osteoporotic lumbar vertebral body compression fractures presented for post-procedure care. A series of radiographs and cross-sectional imaging of the lumbar spine revealed an unexpected finding of cured bone cement within a small lumbar vertebral vein, the inferior vena cava and within the spokes of an inferior vena cava filter which had originally been placed two years earlier. Inferior vena cava filters have become the standard of care to prevent pulmonary embolism in the setting of deep venous thrombosis. Read More

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Application of Adipose Tissue Stem Cells in Regenerative Dentistry: A Systematic Review.

J Int Soc Prev Community Dent 2021 May-Jun;11(3):266-271. Epub 2021 Jun 10.

Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India.

Aim: The aim of this study was to systematically review the applications of adipose tissue stem cells (ADSCs) in regenerative dentistry.

Materials And Methods: An electronic search was conducted in Medline (PubMed) and Scopus databases. The original research associated with the role of ADSCs in regeneration of alveolar bone, periodontal ligament (PDL), cementum as well as the dental pulp was evaluated. Read More

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Indirect Resin Composite Inlays Cemented with a Self-adhesive, Self-etch or a Conventional Resin Cement Luting Agent: A 5 Years Prospective Clinical Evaluation.

J Dent 2021 Sep 4;112:103740. Epub 2021 Jul 4.

Operative Dentistry Dept., Faculty of Dentistry, Mansoura University, Algomhoria Street, Mansoura, Aldakhlia, Egypt Po (box) 35516. Electronic address:

Objective: The aim of this study was to clinically evaluate the 5-years clinical performance of indirect resin composite inlays luted with three different resin cement strategies in MOD Class II restorations.

Materials And Methods: A randomized clinical trial was conducted following CONSORT guidelines. Forty patients with three large cavities indicated for indirect MOD Class II restorations were enrolled in the current study. Read More

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September 2021

Influence of Preoperative Pulp Inflammation in the Outcome of Full Pulpotomy Using a Dog Model.

J Endod 2021 Sep 3;47(9):1417-1426. Epub 2021 Jul 3.

Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Innovation and Research in Oral Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.

Introduction: This study aimed to evaluate the impact of preoperative pulp inflammation on the histologic outcome of full pulpotomy performed in mature permanent posterior teeth using 4 different biomaterials.

Methods: Five beagle dogs (providing a total of 120 roots) were selected. Dentin exposure was performed in teeth from the second and third quadrants. Read More

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September 2021

High toughness resorbable brushite-gypsum fiber-reinforced cements.

Mater Sci Eng C Mater Biol Appl 2021 Aug 26;127:112205. Epub 2021 May 26.

Faculty of Dentistry, McGill University, Montreal, QC H3A 0C7, Canada; College of Dental Medicine, Qatar University, Doha 2713, Qatar. Electronic address:

The ideal bone substitute material should be mechanically strong, biocompatible with a resorption rate matching the rate of new bone formation. Brushite (dicalcium phosphate dihydrate) cement is a promising bone substitute material but with limited resorbability and mechanical properties. To improve the resorbability and mechanical performance of brushite cements, we incorporated gypsum (calcium sulfate dihydrate) and diazonium-treated polyglactin fibers which are well-known for their biocompatibility and bioresorbability. Read More

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Effects of Surface Treatment Procedures on Bond Strength of Lithium Disilicate Glass Ceramic.

Chin J Dent Res 2021 Jun;24(2):119-124

Objective: To evaluate the microshear bond strength (μSBS) of resin cement to a lithium disilicate glass ceramic conditioned with different surface treatment procedures.

Methods: Crystallised slices of lithium disilicate glass ceramic were randomly divided into five groups (n = 10) according to different surface treatment procedures: the no surface treatment (NT) group was untreated; the hydrofluoric acid (HF) group was conditioned with 4.5% HF; the silane (S) group was conditioned with a silane coupling agent; the hydrofluoric acid and silane (HFS) group was conditioned with HF followed by the silane coupling agent; and the Monobond Etch & Prime (MEP) (Ivoclar Vivadent, Schaan, Liechtenstein) group was conditioned with the one-step self-etching primer MEP. Read More

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Effect of Different Surface Treatments of Lithium Disilicate on the Adhesive Properties of Resin Cements.

Materials (Basel) 2021 Jun 15;14(12). Epub 2021 Jun 15.

Head Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel.

The aim of the current study was to evaluate the influence of hydrofluoric (HF) acid concentration and conditioning time on the shear bond strength (SBS) of dual cure resin cement to pressed lithium disilicate ceramic compared to treatment with an Etch and Prime self-etching glass-ceramic primer (EP). A total of 100 samples of pressed lithium disilicate (IPS e.max Press, Ivoclar Vivadent) were randomly divided into five groups (n = 20) according to surface treatment: two different concentrations of HF (5% or 9%), for different durations (20 or 90 s), or treatment with EP. Read More

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Preparation and characterization of polyacrylic acid-hydroxyapatite nanocomposite by microwave-assisted synthesis method.

Heliyon 2021 Jun 19;7(6):e07226. Epub 2021 Jun 19.

Department of Chemistry, Faculty of Science, Hacettepe University, 06800, Beytepe-Ankara, Turkey.

Polyacrylic acid, polyalkenoic acids in general, form the liquid ionomer phase of glass ionomer cements, which are frequently used in root restorations in dentistry. It is possible to obtain these ionomers with a fast, energy-efficient, high reaction efficiency and a clean method with microwave irradiation method. In this study, polyacrylic acid and its composite with nano HAp have been synthesized by microwave (MW) irradiation. Read More

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2021 Frank Stinchfield Award: A novel cemented hip hemiarthroplasty infection model with real-time in vivo imaging in rats : an animal study.

Bone Joint J 2021 Jul;103-B(7 Supple B):9-16

The Ottawa Hospital Division of Orthopaedic Surgery, Ottawa, Canada.

Aims: The aims of this study were to develop an in vivo model of periprosthetic joint infection (PJI) in cemented hip hemiarthroplasty, and to monitor infection and biofilm formation in real-time.

Methods: Sprague-Dawley rats underwent cemented hip hemiarthroplasty via the posterior approach with pre- and postoperative gait assessments. Infection with was monitored with in vivo photoluminescent imaging in real-time. Read More

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Cementing a collarless polished tapered femoral stem through the anterior approach : evaluation of cement mantle quality and component alignment.

Bone Joint J 2021 Jul;103-B(7 Supple B):46-52

Division of Orthopaedic Surgery, The Ottawa Hospital, Ottawa, Canada.

Aims: The aim of this study was to radiologically evaluate the quality of cement mantle and alignment achieved with a polished tapered cemented femoral stem inserted through the anterior approach and compared with the posterior approach.

Methods: A comparative retrospective study of 115 consecutive hybrid total hip arthroplasties or cemented hemiarthroplasties in 110 patients, performed through anterior (n = 58) or posterior approach (n = 57) using a collarless polished taper-slip femoral stem, was conducted. Cement mantle quality and thickness were assessed in both planes. Read More

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Comparison of Fracture Strengths among different Commonly Placed Anterior Esthetic Restorations for Primary Dentition: An in vitro study.

J Clin Pediatr Dent 2021 Jul;45(3):171-176

The purpose of this study was to determine and compare the shear force (N) required to fracture or dislodge an all-ceramic zirconia-based crown using different luting cement with those of polycarbonate crown and strip crown for the primary anterior teeth in vitro.

Study Design: Four groups of esthetic restoration for primary anterior teeth were tested for fracture strength: 1) Fifteen all-ceramic zirconia-based crowns cemented with glass ionomer cement, 2) Fifteen all-ceramic zirconia-based crowns bonded with a self-adhesive resin cement, 3) Fifteen polycarbonate crowns cemented with a polymer reinforced zinc-oxide eugenol and 4) Fifteen resin strip crowns. All restorations were placed and cemented on reproductions of dies in an independent laboratory at Delhi, India. Read More

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Risk Factors for New Vertebral Fracture After Percutaneous Vertebroplasty for Osteoporotic Vertebral Compression Fractures.

Clin Interv Aging 2021 22;16:1193-1200. Epub 2021 Jun 22.

Graduate School of Xi'an Medical University, Xi'an, Shaanxi, People's Republic of China.

Purpose: To analyze the risk factors for new vertebral fractures after percutaneous vertebroplasty (PVP) for osteoporotic vertebral compression fractures (OVCFs).

Patients And Methods: We retrospectively reviewed the records of patients with symptomatic OVCFs who underwent PVP in our hospital, from January 2014 to January 2019. Demographic and lifestyle data on the presence of underlying chronic disease, preoperative bone mineral density, details of vertebral fractures, postoperative osteoporosis treatment, and new fracture development were collected. Read More

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Titanium dioxide nanotubes added to glass ionomer cements affect S. mutans viability and mechanisms of virulence.

Braz Oral Res 2021 8;35:e062. Epub 2021 Jun 8.

Faculdade São Leopoldo Mandic, Dental Research Center, Campinas, SP, Brazil.

This in vitro study evaluated the impact of TiO2 nanotubes (n-TiO2) incorporated into glass ionomer cement (GIC) on Streptococcus mutans (S. mutans) characteristics at cellular and molecular levels. n-TiO2, synthesized by the alkaline method (20 nm in size), was added to Ketac Molar EasyMix® at 0%, 3%, 5%, and 7% by weight. Read More

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A novel degradable tricalcium silicate/calcium polyphosphate/polyvinyl alcohol organic-inorganic composite cement for bone filling.

J Biomater Appl 2021 Jun 9:8853282211020399. Epub 2021 Jun 9.

College of Physical Science and Technology, Sichuan University, Chengdu, P.R. China.

In this study, tricalcium silicate (CS) calcium/polyphosphate/polyvinyl alcohol organic-inorganic self-setting composites were successfully designed. A variety of tests were conducted to characterize their self-setting properties, mechanical properties, degradation properties, and related biological properties. The composite bone cements showed a short setting time (5. Read More

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Layered Double Hydroxide Modified Bone Cement Promoting Osseointegration Multiple Osteogenic Signal Pathways.

ACS Nano 2021 06 4;15(6):9732-9745. Epub 2021 Jun 4.

Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, China.

Poly(methyl methacrylate) (PMMA) bone cement has been widely used in orthopedic surgeries including total hip/knee replacement, vertebral compression fracture treatment, and bone defect filling. However, aseptic loosening of the interface between PMMA bone cement and bone often leads to failure. Hence, the development of modified PMMA that facilitates the growth of bone into the modified PMMA bone cement is key to reducing the incidence of aseptic loosening. Read More

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antimicrobial activity of mineral trioxide aggregate, Biodentine, and calcium-enriched mixture cement against , , and using the agar diffusion technique.

Dent Res J (Isfahan) 2021 23;18. Epub 2021 Feb 23.

Department of Basic Medical Sciences, Dental School, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran.

Background: This study assessed the antimicrobial activity of Biodentine, mineral trioxide aggregate (MTA), and calcium-enriched mixture (CEM) cement against , , and .

Materials And Methods: In this study, microbial suspensions were inoculated onto agar plates. The antimicrobial effects of MTA, Biodentine and CEM cement were assessed against , , and by the agar diffusion test. Read More

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February 2021

Formulation of inherently antimicrobial magnesium oxychloride cement and the effect of supplementation with silver phosphate.

Mater Sci Eng C Mater Biol Appl 2021 Jul 30;126:112158. Epub 2021 Apr 30.

School of Chemical Engineering, University of Birmingham, Edgbaston B15 2TT, United Kingdom. Electronic address:

The growing threat of bacterial resistance to antibiotics is driving an increasing need for new antimicrobial strategies. This work demonstrates the potential of magnesium oxychloride cements (MOC) to be used as inorganic antimicrobial biomaterials for bone augmentation. An injectable formulation was identified at a powder to liquid ratio of 1. Read More

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Experimental resin-modified calcium-silicate cement containing N-(2-hydroxyethyl) acrylamide monomer for pulp tissue engineering.

Mater Sci Eng C Mater Biol Appl 2021 Jul 27;126:112105. Epub 2021 Apr 27.

KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium.

Aim: Our study aimed to measure (1) the flexural strength, (2) shear bond strength to dentin, (3) pH, and (4) calcium (Ca) release of a series of innovative resin-modified calcium-silicate pulp-capping cements (Rm-CSCs). Using an ex-vivo human vital tooth-culture model, we additionally assessed (5) their pulp-healing initiation when brought in direct contact with human dental pulp tissue.

Methodology: Three experimental Rm-CSCs, being referred to 'Exp_HEAA', 'Exp_GDM' and 'Exp_HEAA/GDM', contained either 20 wt% N-(2-hydroxyethyl) acrylamide (HEAA), 20 wt% glycerol dimethacrylate (GDM) or 10 wt% HEAA plus 10 wt% GDM, added to a common base composition consisting of 25 wt% urethane dimethacrylate (UDMA), 10 wt% 4-methacryloxyethyl trimellitate anhydride (4-MET), and 5 wt% N,N'-{[(2-acrylamido-2-[(3-acrylamidopropoxy)methyl] propane-1,3-diyl)bis(oxy)]bis-(propane-1,3-diyl)}diacrylamide (FAM-401). Read More

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Biocompatibility and Antibiofilm Properties of Calcium Silicate-Based Cements: An In Vitro Evaluation and Report of Two Clinical Cases.

Biology (Basel) 2021 May 26;10(6). Epub 2021 May 26.

Department of Oral and Maxillofacial Science, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy.

Calcium silicate-based cements have reached excellent levels of performance in endodontics, providing predictable and successful results. To better assess the properties of these bioactive materials, the present study aimed to compare the biocompatibility and antibiofilm properties of ProRoot MTA and Biodentine. Human osteogenic sarcoma (Saos-2) cells were cultured on ProRoot MTA and Biodentine samples or in the presence of both cement extracts. Read More

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Biocompatibility Study of a New Dental Cement Based on Hydroxyapatite and Calcium Silicates: Focus on Liver, Kidney, and Spleen Tissue Effects.

Int J Mol Sci 2021 May 22;22(11). Epub 2021 May 22.

Vinča Institute of Nuclear Sciences, University of Belgrade, 11 000 Belgrade, Serbia.

The effects of a new material based on hydroxyapatite and calcium silicates, named ALBO-MPCA, were investigated on the liver, kidney and spleen. The material was administrated orally for 120 days in an in vivo model in Wistar rats, and untreated animals served as a control. Hematological and biochemical blood parameters were analyzed. Read More

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Comparison of Cement Leakage Rate and Severity After Percutaneous Vertebroplasty for Osteoporotic Vertebral Compression Fractures Using Front-Opening Versus Side-Opening Cannulas.

Orthopedics 2021 May-Jun;44(3):134-140. Epub 2021 May 1.

The authors assessed the occurrence and severity of cement leakage (CL) following percutaneous vertebroplasty (PVP) for osteoporotic vertebral compression fractures (OVCFs) performed using front-opening cannulas (FOCs) vs side-opening cannulas (SOCs). This retrospective cohort study included 811 patients with single-level OVCFs who underwent PVP between March 2016 and September 2018. The 264 patients who met the inclusion criteria were divided into two groups according to whether the procedure was performed using a FOC (n=128) or a SOC (n=136). Read More

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Effectiveness of silver diamine fluoride and glass ionomer cement combined with fluoride varnish in arresting dental caries among intellectually disabled individuals: A randomized controlled trial.

Spec Care Dentist 2021 Sep 25;41(5):544-552. Epub 2021 May 25.

Department of Public Health Dentistry, Postgraduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India.

Aim: To assess the clinical effectiveness of 38% silver diamine fluoride (SDF) in arresting dental caries when compared to combination of fluoride-containing glass ionomer cement (GIC) and fluoride varnish(FV) (5%) among intellectually disabled (ID) individuals.

Methodology: A randomized controlled trial was conducted among ID (n = 82) individuals, in permanent posterior teeth with Nyvad score 2 and 3 (active caries) of dental caries, randomly allocated to experimental arm (38% SDF) (n = 41) and control arm (GIC along with FV) (n = 41). The caries arrest rate and caries preventive fraction was observed at 6-months among both groups. Read More

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September 2021

Cementocyte alterations associated with experimentally induced cellular cementum apposition in hyp mice.

J Periodontol 2021 May 18. Epub 2021 May 18.

Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil.

Background: Cellular cementum, a mineralized tissue covering apical tooth roots, grows by apposition to maintain the tooth in its occlusal position. We hypothesized that resident cementocytes would show morphological changes in response to cementum apposition, possibly implicating a role in cementum biology.

Methods: Mandibular first molars were induced to super-erupt (EIA) by extraction of maxillary molars, promoting rapid new cementum formation. Read More

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