2,817 results match your criteria Operative Dentistry [Journal]


Fracture Resistance of Endodontically Treated Maxillary Premolars Restored With Different Methods.

Oper Dent 2019 Jan/Feb;44(1):E1-E11

Purpose:: The purpose of this in vitro study was to evaluate the resistance and patterns of fracture of endodontically treated maxillary premolars (ETPs) restored with different methods.

Methods And Materials:: Mesio-occluso-distal cavities were prepared in 50 extracted caries-free human maxillary premolars after endodontic treatment. The teeth were divided into five groups (n=10), according to the restorative method. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-262-L
Publisher Site
http://dx.doi.org/10.2341/17-262-LDOI Listing
February 2019
3 Reads

Color Stability of Resin Cements Exposed to Aging.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

The aim of this study was to evaluate the color stability of light-cured and dual-cured resin cements after artificial accelerated aging. Ten specimens (6-mm diameter and 2-mm thickness) for each of five resin cements were prepared: GC (dual-cured cement, GCem), Vb (light-cured cement, Variolink II only the base), Vbc (dual-cured cement, Variolink II base with catalyst), VV (light-cured cement, Variolink Veneer), and FR (flowable resin composite, light cured). The samples were polished and stored in an accelerated artificial aging machine for 308 hours (160 klx), with cycles of 120 minutes under light and 60 minutes in the dark. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-064-LDOI Listing
January 2019

The Combination of CQ-amine and TPO Increases the Polymerization Shrinkage Stress and Does Not Improve the Depth of Cure of Bulk-fill Composites.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Objectives:: To evaluate the effect of combining camphorquinone (CQ) and diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) on the depth of cure and polymerization shrinkage stress of bulk-fill composites.

Methods And Materials:: Experimental bulk-fill composites were produced containing equal molar concentrations of either CQ-amine or CQ-amine/TPO. The degree of in-depth conversion through each millimeter of a 4-mm-thick bulk-fill increment was evaluated by Fourier transform near-infrared microspectroscopy using a central longitudinal cross section of the increment of each bulk-fill composite (n=3). Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/18-234-L
Publisher Site
http://dx.doi.org/10.2341/18-234-LDOI Listing
January 2019
7 Reads

Fracture Strength of Various Types of Large Direct Composite and Indirect Glass Ceramic Restorations.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Introduction:: The objective of this study was to investigate the mechanical behavior of severely compromised endodontically treated molars restored by means of various types of composite buildups, full-contour lithium disilicate crowns (with or without post) or a lithium disilicate endocrown.

Methods And Materials:: One hundred five sound molars were endodontically treated and randomly assigned to 1 control group (endodontic access cavity only) and 6 experimental groups (n=15): glass fiber reinforced composite (GFRC group), direct microhybrid composite (C group), direct microhybrid composite restoration with glass fiber post (CP group), composite buildup and full-contour lithium disilicate crown (LDS group), additional glass fiber post (P-LDS group), and endocrown (EC group). Molar crowns in the treatment groups were removed 1 mm above the cementoenamel junction and restored. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-111-LDOI Listing
January 2019

Bonding Interaction and Shrinkage Stress of Low-Viscosity Bulk Fill Resin Composites With High-Viscosity Bulk Fill or Conventional Resin Composites.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Objective:: To analyze the shrinkage stress, bonding interaction, and failure modes between different low-viscosity bulk fill resin composites and conventional resin composites produced by the same manufacturer or a high-viscosity bulk fill resin composite used to restore the occlusal layer in posterior teeth.

Methods & Materials:: Three low-viscosity bulk fill resin composites were associated with the conventional resin composites made by the same manufacturers or with a high-viscosity bulk fill resin composite, resulting in six groups (n=10). The bonding interaction between resin composites was tested by assessing the microshear bond strength (μSBS). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-163-LDOI Listing
January 2019
1 Read

Enamel Microabrasion and Dental Bleaching on Teeth Presenting Severe-pitted Enamel Fluorosis: A Case Report.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

The present clinical case report describes the clinical steps of enamel microabrasion associated with dental bleaching to restore severely-pitted fluorosed teeth. The process of removing the fluorotic superficial stains started by using macroabrasion with a water-cooled fine tapered 3195 FF diamond bur. Rubber dam isolation of the operative field was used to remove the remaining enamel stains and superficial irregularities with the Opalustre microabrasive compound (6. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-116-TDOI Listing
January 2019

Restoration of a Mandibular Incisor With a Computer-aided Design/Computer-aided Manufacturing Fabricated Anterior Onlay.

Authors:
J May J Watson

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

The use of computer-aided design/computer-aided manufacturing (CAD/CAM) dentistry has triggered novel approaches to restoring teeth in ways that increase efficiency, improve esthetics, and conserve tooth structure. Endodontically treated mandibular incisors offer a challenging restorative opportunity due to the small amount of natural tooth structure and the required amount of reduction needed for restorative material. The case presented demonstrates how to leverage chairside CAD/CAM technology to restore a discolored and fractured endodontically treated mandibular incisor without the use of a post and core and completing the restoration in a single visit. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-217-SDOI Listing
January 2019

Long-term Follow-up of Complicated Crown Fracture With Fragment Reattachment: Two Case Reports.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Two cases of complicated crown fracture of the maxillary incisors were restored using the fragment reattachment technique. Root canal treatment was performed, and the fractured fragment was bonded to the tooth structure using a dentin adhesive system and a flowable composite resin, followed by the insertion of a fiber post using dual-cured resin cement. Reattached fragments have shown reliable prognosis without inflammatory signs around bonded junctions after long-term follow-up. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-201-TDOI Listing
January 2019

Effect of Beam Profiles From Different Light Emission Tip Types of Multiwave Light-emitting Diodes on the Curing Profile of Resin-based Composites.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Light activation is an important clinical step for achieving success in restorative procedures. This study evaluated the influence of beam profile from different light emission tip types of multiwave light-emitting diodes (LEDs) on the curing profile of resin-based composites. Experimental composites were produced containing either camphorquinone (CQ) or diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) as a photoinitiator. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/16-242DOI Listing
January 2019

Elevation of an Amalgam-stained Margin With Resin-modified Glass Ionomer to Support an Indirect Ceramic Restoration: A Six-year Case Report.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

This case report presents treatment of a mandibular second molar with an extensive proximal margin, which was finished on amalgam-stained dentin. A resin-modified glass ionomer for margin elevation and a lithium disilicate onlay were used to restore the tooth to proper form and function. The patient has been followed for six years and has had no complications during this period. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-114-SDOI Listing
January 2019

Bonding Performance of Simplified Adhesive Systems in Noncarious Cervical Lesions at 2-year Follow-up: A Double-blind Randomized Clinical Trial.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Objectives:: This study aimed to evaluate the bonding performance of a universal adhesive used according to self-etching or etch-and-rinse protocols in noncarious cervical lesions (NCCLs) and to compare the two protocols with their respective gold standard techniques.

Methods And Materials:: This randomized, double-blind clinical study enrolled 34 participants who met the inclusion criteria, 29 of whom returned after two years. They received 152 restorations bonded with one of the three adhesives (Scotchbond Universal Adhesive, Adper Single Bond 2, or Clearfil SE Bond) and one of the two bonding techniques tested. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-049-CDOI Listing
January 2019
1 Read

In Vitro Evaluation of Surface Properties and Wear Resistance of Conventional and Bulk-fill Resin-based Composites After Brushing With a Dentifrice.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Objectives:: This study evaluated the effect of toothbrushing with a dentifrice on gloss, roughness profile, surface roughness, and wear of conventional and bulk-fill resin-based composites.

Methods And Materials:: Gloss and surface roughness of resin-based composites (RBCs; Admira Fusion X-tra, Aura Bulk Fill, Filtek Bulk Fill Flowable, Filtek Bulk Fill Posterior Restorative, Filtek Supreme Ultra, Herculite Ultra, Mosaic Enamel, SDR flow+, Sonic Fill 2, Tetric EvoFlow Bulk Fill and Tetric EvoCeram Bulk Fill) were analyzed before and after brushing; the roughness profile and wear were also determined after toothbrushing. Representative three-dimensional images of the surface loss and images comparing the unbrushed and brushed surfaces were also compared. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-200-LDOI Listing
January 2019

Clinical Study of Bleaching Gel Storage Temperature on Tooth Color and Sensitivity.

Oper Dent 2019 Jan 31. Epub 2019 Jan 31.

Objective:: The objective of this triple-blind, split-mouth, randomized clinical trial was to evaluate the bleaching efficacy and tooth sensitivity of an in-office bleaching agent submitted to different storage temperatures (room temperature at 21.04°C±3.13°C or refrigeration at 5°C). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-302-CDOI Listing
January 2019

Effect of Calcium and Fluoride Addition to Hydrogen Peroxide Bleaching Gel On Tooth Diffusion, Color, and Microhardness.

Oper Dent 2019 Jan 23. Epub 2019 Jan 23.

Objectives:: The aim of this study was to evaluate the effect of calcium and fluoride addition to a 35% hydrogen peroxide (HP) bleaching gel with regard to its diffusion through the tooth structure, enamel microhardness, and bleaching efficacy.

Methods And Materials:: Eighty specimens (6 mm in diameter and 2 mm in height; 1 mm/enamel and 1 mm/dentin) were obtained from bovine incisors that were polished and divided into four groups (n=20) according to the remineralizing agent added to the gel: Ca = 0.5% calcium gluconate; F = 0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-113-LDOI Listing
January 2019

Gingival Health of Porcelain Laminate Veneered Teeth: A Retrospective Assessment.

Oper Dent 2019 Jan 23. Epub 2019 Jan 23.

Statement Of Problem:: The long-term effect of the presence of porcelain laminate veneers (PLVs) on the health of the surrounding gingival issues is not available in the restorative literature.

Purpose:: To assess the long-term effect of PLVs on the health of the surrounding gingival tissues. A secondary aim was to correlate gingival crevicular fluid (GCF) scores with clinical parameters used for gingival health assessment in teeth treated with PLVs. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-088-CDOI Listing
January 2019

Amalgam Strength Resistance to Various Contaminants.

Oper Dent 2019 Jan 23. Epub 2019 Jan 23.

Purpose:: The purpose of this study was to quantify the relative strength tolerance of 1-day and 30-day amalgam following saturation contamination with water, saliva, blood, and handpiece lubricant oil during condensation.

Methods And Materials:: Valiant PhD XT amalgam was tested with 300 shear-strength (N=15) and 120 compressive-strength (N=6) specimens, divided into 1-day and 30-day groups, each with control, water, saliva, blood, and lubricant oil contamination samples. Shear specimens were condensed in 4 × 4-mm anchor wells inundated with contaminant fluids before adding a ring mold with 3. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-091-LDOI Listing
January 2019

The Use of Composite Layering Technique to Mask a Discolored Background: Color Analysis of Masking Ability After Aging-Part II.

Oper Dent 2019 Jan 23. Epub 2019 Jan 23.

The aim of this study was to evaluate the effectiveness of the layering technique to mask a discolored background (C4) after one year of water aging. The technique was used with three resin composite restorative systems (IPS Empress Direct, Charisma Diamond, and Filtek Z350XT). Ninety 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-016-LDOI Listing
January 2019

In Vitro Red Fluorescence as an Indicator of Caries Lesion Activity.

Oper Dent 2019 Jan 10. Epub 2019 Jan 10.

This in vitro study examined the utility of comparing red fluorescence between active and inactive caries lesions and investigated whether changes in red fluorescence and fluorescence loss are influenced by lesion activity following remineralization. Sixty-two noncavitated smooth surface caries lesions on extracted human teeth were classified into active or inactive lesions using the Nyvad system prior to a 12-day pH-cycling procedure. Quantitative light-induced fluorescence-digital images were used to measure fluorescence parameters before and after pH cycling. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-369-LDOI Listing
January 2019

Resin-Based Materials Protect Against Erosion/Abrasion-a Prolonged In Situ Study.

Oper Dent 2019 Jan 10. Epub 2019 Jan 10.

While patient compliance is key to preventive measures related to dental erosion, the application of resin-based materials could serve as an additional treatment to inhibit erosion progression. This in situ study evaluated the effect of applying resin-based materials, including resin infiltrant, on previously eroded enamel subjected to prolonged erosive and abrasive challenges. The factors under study were types of treatment (infiltrant [Icon], sealant [Helioseal Clear], adhesive [Adper Scotchbond Multi-Purpose Plus], and control [no treatment]); wear conditions (erosion [ERO] and erosion + abrasion [ERO + ABR]) and challenge time (5 and 20 days) in a single-phase study. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-198-L
Publisher Site
http://dx.doi.org/10.2341/17-198-LDOI Listing
January 2019
4 Reads

Clinical Evaluation of Two Different Prevention Programs in Adults Depending on Their Caries Risk Profile: One-Year Results.

Oper Dent 2018 Dec 5. Epub 2018 Dec 5.

The aim of this study was to investigate the management of incipient caries lesions in adults with two preventive protocols. A total of 44 adult patients with high, moderate and low caries risk with 516 incipient caries took part in the study. These patients were assessed for caries with International Caries Detection and Assessment System (ICDAS) criteria and were then divided into three groups depending on their caries risk profile: a high-risk group (group A), a moderate-risk group (group B), and a low-risk group (group C). Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-164-C
Publisher Site
http://dx.doi.org/10.2341/17-164-CDOI Listing
December 2018
2 Reads

Impact of Recently Developed Universal Adhesives on Tensile Bond Strength to Computer-Aided Design/Manufacturing Ceramics.

Oper Dent 2018 Dec 5. Epub 2018 Dec 5.

Objectives:: The aim of this investigation was to test the tensile bond strength (TBS) between different computer-aided-design/manufacturing (CAD/CAM) ceramics after conditioning using different universal adhesive systems and resin composite cement.

Methods And Materials:: Substrates of four CAD/CAM ceramics-1) VITABLOCS Mark II, 2) Initial LRF, 3) Celtra Duo, and 4) IPS e.max CAD (N=648, n=162)-were fabricated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-017-LDOI Listing
December 2018
4 Reads

The Use of Different Photoinitiator Systems in Photopolymerizing Resin Cements Through Ceramic Veneers.

Oper Dent 2018 Dec 5. Epub 2018 Dec 5.

Objective:: To evaluate the effect of different photoinitiator systems on photopolymerizing resin cements through ceramic veneers with different thickness on microshear bond strength (μSBS), flexural strength (FS), and ultimate tensile strength (UTS) and verify the light attenuation through these ceramic veneers.

Methods And Materials:: Four photopolymerizing experimental resin cements were produced with the same resin matrix and associated with four different photoinitiator systems: camphorquinone (CQ), diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), Ivocerin, and TPO + Ivocerin. Eighty disc-shaped ceramic veneers (IPS Empress Esthetic, Ivoclar Vivadent) were fabricated (10-mm diameter) in two different thicknesses: 0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-263-LDOI Listing
December 2018

A Simple Method for Treating Subgingival Class V Lesions.

Authors:
L Giachetti

Oper Dent 2018 Dec 5. Epub 2018 Dec 5.

Noncarious cervical lesions (NCCLs) are steadily increasing. Unfortunately, NCCL restorations represent one of the less durable types of restorations due to problems, including isolation and crevicular moisture control, especially in cases where the cervical margin is covered by soft tissue. This article presents a technique that allows us, through the use of a common metallic matrix, to isolate and make accessible class V cavities with intrasulcular cervical margins. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-141-TDOI Listing
December 2018
1 Read

Ferrule Design Does Not Affect the Biomechanical Behavior of Anterior Teeth Under Mechanical Fatigue: An In Vitro Evaluation.

Oper Dent 2018 Oct 10. Epub 2018 Oct 10.

Objectives:: To investigate the survival and failure mode of fiber-post resin restorations over preparations with different ferrule designs when submitted to a fatigue load test.

Methods And Materials:: Fifty bovine incisors were selected and divided into five groups (n=10) according to ferrule design: a no-ferrule group, a 2-mm circumferential ferrule group, a 2-mm buccal ferrule group, a 2-mm lingual ferrule group, and a 2-mm buccal and lingual ferrule group. The fiberglass post was cemented and the composite core was built up and prepared, followed by cementation of a full composite crown. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-296-LDOI Listing
October 2018
2 Reads

Is Optical Coherence Tomography a Potential Tool to Evaluate Marginal Adaptation of Class III/IV Composite Restorations In Vivo?

Oper Dent 2018 Oct 10. Epub 2018 Oct 10.

Objective:: Margin analysis of Class III and IV composite restorations in vitro and in vivo occurred by scanning electron microscopy (SEM) and optical coherence tomography (OCT). The results were compared and related to clinical evaluation.

Methods And Materials:: Eight Class III composite restorations were imaged in vitro using OCT and SEM. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-192-CDOI Listing
October 2018
1 Read

Effectiveness of Dental Bleaching With 37.5% and 6% Hydrogen Peroxide and Its Effect on Quality of Life.

Oper Dent 2018 Oct 10. Epub 2018 Oct 10.

Objective:: This study investigated whether it is possible to achieve equally satisfactory results between 37.5% hydrogen peroxide (HP) gel and 6% HP gel. We also assessed the psychosocial impact and self-perception of esthetics generated by extracoronal tooth whitening. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-229-CDOI Listing
October 2018

Comparison of the Efficacy of Different Fluoride Varnishes on Dentin Remineralization During a Critical pH Exposure Using Quantitative X-Ray Microtomography.

Oper Dent 2018 Nov/Dec;43(6):E308-E316

Objectives:: The objective of this in vitro study was to quantify the amount of mineral change in demineralized dentin at pH 5.5 after the application of dental varnishes containing fluoride with casein phosphopeptide-amorphous calcium phosphate, fluoride and bioglass, or fluoride alone.

Methods And Materials:: A total of 12 extracted human sound mandibular premolar root samples were coated with an acid-resistant varnish, leaving a 2 × 3 mm window at the outer root surface. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-014-LDOI Listing
November 2018
24 Reads

Benefits of Nonthermal Atmospheric Plasma Treatment on Dentin Adhesion.

Oper Dent 2018 Nov/Dec;43(6):E288-E299

Objectives:: This study aimed to evaluate the influence of two nonthermal atmospheric plasma (NTAP) application times and two storage times on the microtensile bond strength (μTBS) to dentin. The influence of NTAP on the mechanical properties of the dentin-resin interface was studied by analyzing nanohardness (NH) and Young's modulus (YM). Water contact angles of pretreated dentin and hydroxyapatite blocks were also measured to assess possible alterations in the surface hydrophilicity upon NTAP. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-123-L
Publisher Site
http://dx.doi.org/10.2341/17-123-LDOI Listing
November 2018
9 Reads

Cuspal Flexure and Stress in Restored Teeth Caused by Amalgam Expansion.

Oper Dent 2018 Nov/Dec;43(6):E300-E307. Epub 2018 Oct 10.

Objective:: Cracks in amalgam-filled teeth may be related to amalgam expansion. This study measured cuspal flexure and used finite element analysis to assess associated stress levels in amalgam-filled teeth.

Methods And Materials:: External surfaces of 18 extracted molars were scanned in three dimensions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-329-LDOI Listing
October 2018

Faculty Posting.

Authors:

Oper Dent 2018 Nov/Dec;43(6):674

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/1559-2863-43.6.674DOI Listing
November 2018

2018 Reviewer Recognition.

Authors:

Oper Dent 2018 Nov/Dec;43(6):563-565

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/1559-2863-43.6.563DOI Listing
November 2018

Surface Sealant Effect on the Color Stability of a Composite Resin Following Ultraviolet Light Artificial Aging.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objective:: To examine how exposure to accelerated artificial aging (AAA) stimuli (ultraviolet [UV] light) affects the color stability of a composite resin following surface sealant (SS) application.

Methods And Materials:: A total of 30 cylindrical composite resin (Esthet-X) discs were prepared using Teflon-coated rings. The treatment groups, defined by different SS (Seal-N-Sine, PermaSeal, OptiGuard, Biscover LV, and DuraFinish) use, were divided into five groups of six discs each. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-053-LDOI Listing
November 2018

The Role of Occlusal Factors in the Presence of Noncarious Cervical Lesions in Young People: A Case-Control Study.

Oper Dent 2019 Jan/Feb;44(1):E12-E22. Epub 2018 Nov 16.

Objective:: The aim of this retrospective case-control study was to evaluate the influence of different occlusal characteristics and self-referred bruxism in the presence of noncarious cervical lesions (NCCLs).

Methods And Materials:: The participants were 280 students (140 cases and 140 controls), with an average age of 24.5 years, from six schools of dentistry in Spain. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-028-CDOI Listing
November 2018

Composite-composite Adhesion as a Function of Adhesive-composite Material and Surface Treatment.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objective:: To evaluate the composite-to-composite repair interfacial fracture toughness (iFT) as a function of adhesive and composite repair material.

Methods And Materials:: Beam-shaped composite specimens (21×4×3±0.2 mm) were prepared for each substrate material (Filtek Supreme Ultra [FSU] or Clearfil Majesty ES-2 [CME]) and artificially aged for 50,000 thermocycles (5-55°C, 20-second dwell time). Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/18-037-L
Publisher Site
http://dx.doi.org/10.2341/18-037-LDOI Listing
November 2018
17 Reads

Impact of Modifiable Risk Factors on Bone Loss During Periodontal Maintenance.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objectives: The aim of this study was to analyze modifiable patient risk factors from dental chart histories and radiographs for progressive mild-moderate periodontitis during periodontal maintenance (PM).

Methods And Materials: Bitewing radiographs of 442 elderly periodontal maintenance patients were taken before and after two years of periodontal maintenance. Each progressive periodontitis (PP) patient (with at least one site of posterior interproximal bone loss of ≥2 mm, n=71) was matched to a periodontitis stable (PS) patient (no sites with bone loss, n=71) of the same gender and age (±five years) to control for these variables and was compared for measurements of general patient (medical history, smoking, hygiene and compliance habits) and tooth-related (bone loss, overhangs, interproximal dimensions) factors at baseline. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-041-CDOI Listing
November 2018

Clinical and Histological Study on Direct Pulp Capping With CO Laser Irradiation in Human Teeth.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

The study aimed to histologically evaluate wound healing of exposed human pulp on direct pulp capping using super-pulsed CO laser preirradiation. In this single-blind clinical trial, 28 third molar teeth of 17 volunteers were randomly capped with either CO laser irradiation (n=14) or Dycal (calcium hydroxide cement; n=14) and restored using resin composite. The laser was operated in super-pulsed mode (pulse duration, 0. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/18-030-C
Publisher Site
http://dx.doi.org/10.2341/18-030-CDOI Listing
November 2018
18 Reads

Structural Integrity Evaluation of Large MOD Restorations Fabricated With a Bulk-Fill and a CAD/CAM Resin Composite Material.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Aims:: To evaluate the effect of two composite restorative techniques (direct bulk fill vs indirect CAD/CAM) on the fracture resistance and mode of fracture of extended mesio-occlusal-distal (MOD) cavity preparations.

Methods:: Fifty-one sound human mandibular third molars were divided into three groups (n=17). Extended bucco-lingual MOD cavities were prepared. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/18-013-L
Publisher Site
http://dx.doi.org/10.2341/18-013-LDOI Listing
November 2018
4 Reads

Controlling In Vivo, Human Pulp Temperature Rise Caused by LED Curing Light Exposure.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objective:: The objective of this study was to evaluate the in vivo effectiveness of air spray to reduce pulp temperature rise during exposure of intact premolars to light emitted by a high-power LED light-curing unit (LCU).

Methods And Materials:: After local Ethics Committee approval (#255945), intact, upper first premolars requiring extraction for orthodontic reasons from five volunteers received infiltrative and intraligamental anesthesia. The teeth (n=9) were isolated using rubber dam, and a minute pulp exposure was attained. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-364-C
Publisher Site
http://dx.doi.org/10.2341/17-364-CDOI Listing
November 2018
9 Reads

Effects of Enzymatic Activation of Bleaching Gels on Hydrogen Peroxide Degradation Rates, Bleaching Effectiveness, and Cytotoxicity.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objectives:: The aim of this study was to evaluate the effect of horseradish peroxidase (HRP) on the release of free radicals, bleaching effectiveness, and indirect cytotoxicity of a 35% hydrogen peroxide (HP) bleaching gel.

Methods And Materials:: First, HP degradation rates and free radical release were evaluated for 35% HP in contact or not with HRP (10 mg/mL). The bleaching gel associated or not with HRP was then applied (3 × 15 minutes) to enamel/dentin discs adapted to artificial pulp chambers, and the culture medium in contact with dentin surfaces (extract) was collected and exposed to cultured odontoblast-like cells. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-276-LDOI Listing
November 2018

Effect of Simulated Pulpal Microcirculation on Temperature When Light Curing Bulk Fill Composites.

Oper Dent 2018 Nov 16. Epub 2018 Nov 16.

Objectives:: To evaluate the effect of light curing bulk fill resin composite restorations on the increase in the temperature of the pulp chamber both with and without a simulated pulpal fluid flow.

Methods And Materials:: Forty extracted human molars received a flat occlusal cavity, leaving approximately 2 mm of dentin over the pulp. The teeth were restored using a self-etch adhesive system (Clearfil SE Bond, Kuraray) and two different bulk fill resin composites: a flowable (SDR, Dentsply) and a regular paste (AURA, SDI) bulk fill. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-351-LDOI Listing
November 2018

Direct Posterior Restorations: A 13-Year Survey of Teaching Trends and Use of Materials.

Oper Dent 2018 Nov/Dec;43(6):E273-E279. Epub 2018 Sep 14.

Objective:: The study aimed to evaluate teaching trends and use of materials in direct posterior restorations during a 13-year period in an Israeli dental school.

Methods:: Data registered in computerized files, relating to posterior restorations performed in the student clinic during the past 13 years (2004-2016), were collected. The restorative materials used (ie, amalgam vs composite), the type of tooth, and the number of surfaces restored were analyzed. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-361-C
Publisher Site
http://dx.doi.org/10.2341/17-361-CDOI Listing
September 2018
7 Reads

Effect of Different Adhesive Strategies and Time on Microtensile Bond Strength of a CAD/CAM Composite to Dentin.

Oper Dent 2018 Sep 13. Epub 2018 Sep 13.

Purpose: The aim of this study was to evaluate the effect of adhesive strategy and time on the microtensile bond strength of a computer-aided design/computer-aided manufacturing (CAD/CAM) composite to dentin.

Methods And Materials: Sixty CAD/CAM composite blocks were bonded to human dentin with simplified bonding agents using etch-and-rinse and self-etching approaches and amine-based and amine-free resin cements, with and without the application of a dual-cure activator (DCA; n=10): SBP-ARC (Adper Single Bond Plus + RelyX ARC), SBP-RXU (Adper Single Bond Plus + RelyX Ultimate), SBP-DCA-RXU (Adper Single Bond Plus + DCA + RelyX Ultimate), SBU-ARC (Scotchbond Universal + RelyX ARC), SBU-RXU (Scotchbond Universal + RelyX Ultimate), and SBU-DCA-ARC (Scotchbond Universal + DCA + RelyX ARC). Each specimen was light cured for 40 seconds under load and stored in distilled water at 37°C for seven days. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-338-L
Publisher Site
http://dx.doi.org/10.2341/17-338-LDOI Listing
September 2018
2 Reads

Caries Diagnosis in Dental Practices: Results From Dentists in a Brazilian Community.

Oper Dent 2019 Jan/Feb;44(1):E23-E31. Epub 2018 Sep 13.

The aim of this study was to assess practices related to diagnosis of dental caries among dentists (n=217) from Araraquara, São Paulo State, Brazil. Data on sociodemographic information and practitioner characteristics were collected using a pretested questionnaire, and data on practices related to caries diagnosis were gathered by using a translated and culturally adapted questionnaire from the US National Dental Practice-Based Research Network. Descriptive statistics and regression analyses were used for data analysis. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/18-034-C
Publisher Site
http://dx.doi.org/10.2341/18-034-CDOI Listing
September 2018
12 Reads

Tailored Dentistry: From "One Size Fits All" to Precision Dental Medicine?

Authors:
F Schwendicke

Oper Dent 2018 Sep/Oct;43(5):451-459

Over the past 30 years and fueled by both a rapidly evolving understanding of dental diseases and technological advances in diagnostics and therapy, dentistry has been changing dramatically. Managing dental caries and carious lesions had, for nearly a century, encompassed only a small number of basic concepts that were applied to virtually all patients and lesions, namely, invasive removal of any carious tissue regardless of its activity or depth and its replacement with restorative materials (amalgams or crowns for most of the past) or tooth removal and prosthetic replacement. Grounded in a deeper understanding of the disease "caries," its management-aiming to control the causes of the disease, to slow down or alleviate existing disease, and, only as a last resort, to remove its symptoms using a bur or forceps-has become more complex and diverse. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/18-076-LDOI Listing
September 2018

Original and Repair Bulk Fracture Resistance of Particle Filler and Short Fiber-Reinforced Composites.

Oper Dent 2018 Sep/Oct;43(5):E232-E242

Objective: This study aimed to evaluate the original (OR) and repair (RR) fracture resistance of a semi-interpenetrating polymer network (semi-IPN)-based short fiber-reinforced composite compared to dimethacrylate-based composite materials by means of the V-notch test.

Methods And Materials: Circular specimens (5×2 mm) with a centrally machined 90° V-shaped notch were prepared. Four bulk fill (Filtek Bulk Fill, Venus Bulk Fill, TetricEvo Ceram Bulk Fill, SDR), three microfilled hybrid (GC-Anterior, GC-Posterior, Z250), one nanofilled (SupremeXTE), and two short fiber-reinforced (Alert, everX Posterior) composites were selected. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-207-LDOI Listing
September 2018
10 Reads

Chemical Interaction and Interface Analysis of Self-Etch Adhesives Containing 10-MDP and Methacrylamide With the Dentin in Noncarious Cervical Lesions.

Oper Dent 2018 Sep/Oct;43(5):E253-E265

Objectives: To characterize the chemical interactions and analyze the interface of adhesive systems containing 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) and N-methacryloyl glycine (methacrylamide) functional monomers with the dentin in noncarious cervical lesions (NCCLs) compared with artificial defects (ADs).

Methods And Materials: Twenty human teeth with natural NCCLs on the buccal surface were used. Class V cavities, similar to NCCLs, were created on the lingual surface to serve as controls. Read More

View Article

Download full-text PDF

Source
http://www.jopdentonline.org/doi/10.2341/17-366-L
Publisher Site
http://dx.doi.org/10.2341/17-366-LDOI Listing
September 2018
4 Reads

Thoughts on Dentistry-2018.

Authors:
J A Platt

Oper Dent 2018 Sep/Oct;43(5):449-450

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/1559-2863-43.5.449DOI Listing
September 2018
1 Read

Dynamic and Static Flexural Appraisal of Resin-based Composites: Comparison of the ISO and Mini-flexural Tests.

Oper Dent 2018 Sep/Oct;43(5):E223-E231

The objective of this study was to determine the influence of specimen dimension and conditioning medium on the dynamic and static flexural properties of resin-based composites (RBCs). One conventional (Filtek Z350) and two bulk-fill RBCs (Filtek Bulk-fill and Beautifil-Bulk Restorative) were evaluated. Bar-shaped specimens with dimensions 25 × 2 × 2 mm (ISO flexural [IFT]) or 12 × 2 × 2 mm (mini-flexural [MFT]) were fabricated using customized stainless-steel molds, finished, measured, randomly divided into two groups, and conditioned in air or artificial saliva (SAGF) for seven days at 37°C. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-224-LDOI Listing
September 2018
1 Read

Online Only Articles.

Authors:

Oper Dent 2018 Sep/Oct;43(5):561

On occasion we receive manuscripts that we would like to publish, but do not have the page room to include in the print journal. For the full article, please go to www.jopdentonline. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/1559-2863-43.5.561DOI Listing
September 2018

Clinical Evaluation of Nd:YAG Laser With and Without Dentin Bonding Agent for the Treatment of Occlusal Hypersensitivity.

Oper Dent 2018 Aug 24. Epub 2018 Aug 24.

Purpose: The aim of the present study was to evaluate and compare both the immediate and delayed desensitizing effects of the Nd:YAG (neodymium-doped:yttrium aluminum garnet; Nd:YAlO) laser with and without dentin bonding agent (DBA) on occlusal dentinal hypersensitivity (DH).

Methods And Materials: Twenty-one patients with a total of 117 chronic occlusal hypersensitive teeth were selected. Each subject had at least three hypersensitive teeth. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2341/17-265-CDOI Listing
August 2018
2 Reads