2,798 results match your criteria Operative Dentistry [Journal]


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

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http://www.jopdentonline.org/doi/10.2341/17-164-C
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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

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http://dx.doi.org/10.2341/18-017-LDOI Listing
December 2018
3 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

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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

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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

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http://dx.doi.org/10.2341/17-296-LDOI Listing
October 2018
1 Read

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

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

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

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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

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http://dx.doi.org/10.2341/18-014-LDOI Listing
November 2018
9 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

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http://www.jopdentonline.org/doi/10.2341/17-123-L
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http://dx.doi.org/10.2341/17-123-LDOI Listing
November 2018
4 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

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

Faculty Posting.

Authors:

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

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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

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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

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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 2018 Nov 16. 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

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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

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http://www.jopdentonline.org/doi/10.2341/18-037-L
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http://dx.doi.org/10.2341/18-037-LDOI Listing
November 2018
14 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

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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

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http://www.jopdentonline.org/doi/10.2341/18-030-C
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http://dx.doi.org/10.2341/18-030-CDOI Listing
November 2018
6 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

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http://www.jopdentonline.org/doi/10.2341/18-013-L
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http://dx.doi.org/10.2341/18-013-LDOI Listing
November 2018
1 Read

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

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http://www.jopdentonline.org/doi/10.2341/17-364-C
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http://dx.doi.org/10.2341/17-364-CDOI Listing
November 2018
4 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

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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

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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

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http://www.jopdentonline.org/doi/10.2341/17-361-C
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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

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http://www.jopdentonline.org/doi/10.2341/17-338-L
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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 2018 Sep 13. 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

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http://www.jopdentonline.org/doi/10.2341/18-034-C
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http://dx.doi.org/10.2341/18-034-CDOI Listing
September 2018
7 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

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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

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http://dx.doi.org/10.2341/17-207-LDOI Listing
September 2018
6 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

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http://www.jopdentonline.org/doi/10.2341/17-366-L
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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

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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

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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

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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

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

Influence of Ambient Temperature and Light-curing Moment on Polymerization Shrinkage and Strength of Resin Composite Cements.

Oper Dent 2018 Nov/Dec;43(6):619-630. Epub 2018 Aug 24.

Objective:: The purpose of this study was to establish a clinically appropriate light-curing moment for resin composite cements while achieving the highest indirect tensile strength and lowest polymerization shrinkage.

Methods And Materials:: Polymerization shrinkage of seven resin composite cements (Multilink Automix, Multilink Speed Cem, RelyX Ultimate, RelyX Unicem 2 Automix, Panavia V5, Panavia SA plus, VITA Adiva F-Cem) was measured at ambient temperatures of 23°C and 37°C. Testing was done for autopolymerized and light-cured specimens after light application at either 1, 5, or 10 minutes after mixing. Read More

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http://www.jopdentonline.org/doi/10.2341/17-085-L
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http://dx.doi.org/10.2341/17-085-LDOI Listing
August 2018
9 Reads

Effect of Simulated Mastication on the Surface Roughness and Wear of Machinable Ceramics and Opposing Dental Enamel.

Oper Dent 2018 Aug 24. Epub 2018 Aug 24.

Objective: Computer aided design-computer aided machining (CAD-CAM) ceramic crowns are replacing ceramo-metal ones due to newly developed mechanical properties and esthetics. To obtain knowledge about their interactions due to polishing and occlusal contacts with the opposing dental enamel specimen, including surface roughness and wear, the three-body wear simulation was investigated.

Methods And Materials: The surface roughness (RA) and wear rate (mm) of four CAD-CAM blocks with different compositions including Vita Mark II, e. Read More

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http://www.jopdentonline.org/doi/10.2341/17-153-L
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http://dx.doi.org/10.2341/17-153-LDOI Listing
August 2018
3 Reads

Minimally Invasive Adhesive Rehabilitation for a Patient With Tooth Erosion: Seven-year Follow-up.

Oper Dent 2018 Aug 24. Epub 2018 Aug 24.

Tooth wear is a multifactorial condition of growing concern. In clinical practice, it is often a challenge for prevention and treatment since many etiological factors may be involved. This case report describes an esthetic rehabilitation of a young patient presenting tooth wear due to erosion. Read More

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http://dx.doi.org/10.2341/17-181-TDOI Listing

Influence of Shrinkage and Viscosity of Flowable Composite Liners on Cervical Microleakage of Class II Restorations: A Micro-CT Analysis.

Oper Dent 2018 Nov/Dec;43(6):656-664. Epub 2018 Aug 24.

This study determined the influence of shrinkage and viscosity of flowable composite liners on the cervical microleakage of Class II restorations using micro-CT. Seven composites of varying viscosities were selected and included five giomers (Shofu Beautifil II [BF], Flow Plus F00 and F03 [F00 and F03], Flow F02 and F10 [F02 and F10]) and 2 nano-filled composites (3M-ESPE Filtek Z350 [Z350] and Filtek Z350 Flowable [Z350F]). Polymerization shrinkage (n=7) was assessed with the Acuvol volumetric shrinkage analyzer while complex viscosity was determined with the advanced rheometric expansion system at 25°C. Read More

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http://www.jopdentonline.org/doi/10.2341/17-091-L
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http://dx.doi.org/10.2341/17-091-LDOI Listing
August 2018
2 Reads

Clinical Evaluation of Different Delivery Methods of At-Home Bleaching Gels Composed of 10% Hydrogen Peroxide.

Oper Dent 2018 Aug 24. Epub 2018 Aug 24.

Objectives: This study aimed to compare the tooth sensitivity, gingival irritation, and bleaching efficacy of at-home whitening performed with 10% hydrogen peroxide (HP) using a conventional tray-delivered system or two different bleaching systems (strips or prefilled disposable trays).

Methods And Materials: Sixty patients, with maxillary incisors darker than A2 were selected for this single-blind, parallel randomized clinical trial. Teeth were bleached during 14 days with a 30-minute gel contact with teeth per day. Read More

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http://dx.doi.org/10.2341/17-174-CDOI Listing

Comparison of Whitening Dentifrices on the Effectiveness of In-Office Tooth Bleaching: A Double-Blind Randomized Controlled Clinical Trial.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

Objectives: To investigate the effect of whitening dentifrices on the effectiveness of in-office tooth bleaching.

Methods And Materials: A double-blind randomized controlled clinical trial was performed. The participants were randomly allocated into three groups according to the different dentifrices used during this clinical trial: regular dentifrice (group C), conventional whitening dentifrice (group CW), and whitening dentifrice containing blue covarine (group CU). Read More

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http://dx.doi.org/10.2341/17-333-CDOI Listing

Effect of Irradiance and Exposure Duration on Temperature and Degree of Conversion of Dual-Cure Resin Cement for Ceramic Restorations.

Oper Dent 2018 Nov/Dec;43(6):E280-E287. Epub 2018 Aug 14.

This study investigated the effects of irradiance and exposure duration on dual-cured resin cements irradiated through ceramic restorative materials. A single light-curing unit was calibrated to three different irradiances (500, 1000, and 1500 mW/cm) and irradiated to three different attenuating materials (transparent acryl, lithium disilicate, zirconia) with 1-mm thicknesses for 20 or 60 seconds. The changes in irradiance and temperature were measured with a radiometer (or digital thermometer) under the attenuating materials. Read More

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http://dx.doi.org/10.2341/17-283-LDOI Listing
August 2018
15 Reads

Effect of Calcium-phosphate Desensitizers on Staining Susceptibility of Acid-eroded Enamel.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

Objective: To investigate the effect of calcium-phosphate-based desensitizers, Teethmate AP paste (TMAP) and Teethmate Desensitizer (TMD) (Kuraray Noritake Dental, Tokyo, Japan), on the prevention of staining on acid-eroded enamel.

Methods And Materials: Forty polished enamel samples (4×4×1 mm) from bovine incisors were randomly divided into five groups (n=8). After immersion in 50 mL of 0. Read More

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http://dx.doi.org/10.2341/18-024-LDOI Listing

Does a Self-Etching Ceramic Primer Improve Bonding to Lithium Disilicate Ceramics? Bond Strengths and FESEM Analyses.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

Objective: To compare the effect of hydrofluoric acid (HF) vs self-etching ceramic primer on resin cement microshear bond strength (μSBS) and ultramorphology of lithium disilicate (LD) ceramic.

Methods And Materials: LD (IPS e.max CAD, Ivoclar Vivadent) blocks (14×4×2 mm) were polished to 1200 grit and assigned to nine groups (n=5): CON: control, no LD surface treatment; IVO: 5. Read More

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http://dx.doi.org/10.2341/17-355-LDOI Listing

Seven-year Follow-up of Resin Infiltration Treatment on Noncavitated Proximal Caries.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

The purpose of this case report is to present success and failure outcomes of seven-year follow-up of resin infiltration treatment (RIT) used for the proximal caries of maxillary premolars. Although resin infiltration can be a good option for micro-invasive treatment, long-term follow-up data are not sufficient, and the outcome of this technique can be affected by factors such as technique sensitivity of procedure, patient's caries risk, and depth of caries progression. Therefore, careful case selection, application, and follow-up are needed. Read More

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http://dx.doi.org/10.2341/17-323-LDOI Listing

Impact of Silane-containing Universal Adhesive on the Biaxial Flexural Strength of a Resin Cement/Glass-Ceramic System.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

The aim of this study was to determine whether using a silane-containing universal adhesive as a silane primer in glass-ceramic/resin cement systems affects biaxial flexural strength (BFS) and bonded interface integrity after loading. Glass-ceramic (IPS e.max CAD, Ivoclar/Vivadent, Schaan, Liechtenstein) disc-shaped specimens (6. Read More

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http://dx.doi.org/10.2341/17-356-LDOI Listing

Effect of Active Application on Bond Durability of Universal Adhesives.

Oper Dent 2018 Aug 14. Epub 2018 Aug 14.

The purpose of this study was to determine the effect of different adhesive application methods and etching modes on the dentin bond durability of universal adhesives under thermal cycling (TC). All-Bond Universal (Bisco), Adhese Universal (Ivoclar Vivadent), and Scotchbond Universal (3M ESPE) were used as adhesives. In total, 600 bovine teeth with exposed dentin were divided into 12 groups according to the type of adhesive and subjected to the following bonding procedures: 1) etch-and-rinse mode with active application; 2) etch-and-rinse mode with inactive application; 3) self-etch mode with active application; and 4) self-etch mode with inactive application. Read More

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http://dx.doi.org/10.2341/17-384-LDOI Listing
August 2018
4 Reads

Color Regression and Maintenance Effect of Intracoronal Whitening on the Quality of Life: RCT-A One-year Follow-up Study.

Oper Dent 2018 Jul 30. Epub 2018 Jul 30.

Objective: This randomized clinical study evaluated two parameters: 1) the clinical color rebound of whitening patients' tooth discoloration using the walking bleaching technique and 2) the impact on psychological and aesthetic self-perception at the one-year follow-up of patients who underwent bleaching of nonvital teeth.

Methods And Materials: Fifty study participants with nonvital tooth discoloration were recruited. Teeth were assigned randomly into one of two groups: 1) 35% hydrogen peroxide (n=25) and 2) 37% carbamide peroxide (n=25). Read More

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http://dx.doi.org/10.2341/17-288-CDOI Listing
July 2018
4 Reads

Surface Roughness of Ceramic-Resin Composites After Femtosecond Laser Irradiation, Sandblasting or Acid Etching and Their Bond Strength With and Without Silanization to a Resin Cement.

Oper Dent 2018 Jun 28. Epub 2018 Jun 28.

Objectives: The aim of this study was to investigate the effects of femtosecond laser irradiation, sandblasting, or acid etching treatments on the surface roughness of ceramic-resin composites and also shear bond strength (SBS) with and without silanization to a resin cement.

Methods: Samples of Vita Enamic (VE; Vita Zahnfabrik, Bad Säckingen, Germany) and Lava Ultimate (LU; 3M ESPE, Seefeld, Germany) were classified into control (no treatment), sandblasting, hydrofluoric acid, and femtosecond laser groups (n=30). Surface roughness was determined using two-dimensional contact profilometry. Read More

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http://dx.doi.org/10.2341/17-391-LDOI Listing
June 2018
1 Read

Linear Coefficient of Thermal Expansion Evaluation of Glass Ionomer and Resin-Modified Glass Ionomer Restorative Materials.

Oper Dent 2018 Sep/Oct;43(5):E266-E272. Epub 2018 Jun 28.

Objective: The purpose of this evaluation was to evaluate the linear coefficient of thermal expansion (LCTE) of 12 conventional glass ionomer (GIC) and four resin-modified glass ionomer (RMGI) restorative materials.

Methods: GIC and RMGI specimens (2 mm × 5 mm × 5 mm) were fabricated (n=12) following manufacturer instructions and were placed in 0.2M phosphate-buffered saline and stored at 37°C and 98% humidity for one week. Read More

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http://dx.doi.org/10.2341/17-381-LDOI Listing

Effect of Mouth Rinse Treatments on Bleached Enamel Properties, Surface Morphology, and Tooth Color.

Oper Dent 2018 Jun 28. Epub 2018 Jun 28.

Objective: To evaluate, in vitro, the effect of mouth rinse exposure on bleached enamel.

Methods: Enamel/dentin bovine blocks (4×4×2 mm) were bleached with 35% hydrogen peroxide (HP) and were submitted to immersion twice daily for 14 days with different rinses (n=10), including those involving: distilled water (C [control]), 225-ppm NaF (FM, Colgate Plax Classic), essential oil (EM, Listerine Tartar Control), 1.5% hydrogen peroxide (HPM, Colgate Plax Whitening), and 2% hydrogen peroxide, pyrophosphates, and 225-ppm NaF (HPM+P, Colgate® Luminous White). Read More

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http://dx.doi.org/10.2341/17-250-LDOI Listing
June 2018
5 Reads

Effect of Remineralizing Gels on Microhardness, Color and Wear Susceptibility of Bleached Enamel.

Oper Dent 2018 Jun 28. Epub 2018 Jun 28.

Objectives: To evaluate the effect of a remineralizing gel combining fluoride and calcium silicate/phosphate or a sodium fluoride gel on bleached enamel microhardness, color, and wear susceptibility.

Methods And Materials: Two hundred forty bovine enamel-dentin samples were prepared. Baseline analysis of Knoop microhardness, color coordinates (L*a*b*), and surface profile were performed. Read More

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http://dx.doi.org/10.2341/17-150-LDOI Listing

Effect of Thickness on Light Transmission and Vickers Hardness of Five Bulk-fill Resin-based Composites Using Polywave and Single-peak Light-emitting Diode Curing Lights.

Oper Dent 2018 Jun 28. Epub 2018 Jun 28.

Objectives: This study compared light transmission through different thicknesses of bulk-fill resin-based composites (RBCs) using a polywave and a single-peak light-emitting diode light-curing unit (LCU). The effect on the surface hardness was also evaluated.

Methods: Five bulk-fill RBCs were tested. Read More

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http://www.jopdentonline.org/doi/10.2341/17-163-L
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http://dx.doi.org/10.2341/17-163-LDOI Listing
June 2018
5 Reads

In Vitro Effect of Innovative Desensitizing Agents on Dentin Tubule Occlusion and Erosive Wear.

Oper Dent 2018 Jun 28. Epub 2018 Jun 28.

Purpose: The purpose of this study was to evaluate the effects of four in-office desensitizing products on dentin tubule occlusion and erosive wear.

Methods: Dentin hypersensitivity was simulated by EDTA application for five minutes. The specimens were randomly allocated into five groups (n=11), according to treatment: No treatment - Control (C), Duraphat (DUR), Desensibilize Nano P (NP), ClinPro XT Varnish (XTV), and ClinPro White Varnish (CWV). Read More

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http://dx.doi.org/10.2341/17-284-LDOI Listing