Shear bond strength of orthodontic brackets to single-shade composite surfaces: An in-vitro comparative study of different surface preparations.

Purpose: The primary objective of this study was to determine which single-shade composite surface yielded clinically acceptable shear bond strength (SBS) to metal orthodontics brackets. The secondary objectives were to identify the best composite surface treatment to enhance SBS and determine which surface treatment produced the least surface damage at debond.

Methods: Forty dental composite samples were selected from four different manufacturers (n=160) and grouped by manufacturer, one standard multi-shade dental system (FilTek™ Supreme Ultra) and three single-shade dental composites systems (OmniChroma®, SimpliShade™ and Venus® Diamond One).

Shear bond strength of orthodontic brackets bonded to high-translucent dental zirconia with different surface treatments: An in vitro study.

Purpose: The objective of this study was to compare the shear bond strengths of orthodontic brackets bonded to translucent dental zirconia samples which are anatomically accurate and treated with various surface treatments.

Methods: This in vitro study included 156 samples from 3 brands of high-translucent zirconia split into a control group and 4 surface treatment groups: 9.6% hydrofluoric acid etching, 50-micron aluminium oxide particle air abrasion, and 30-micron tribochemical silica coating (TBS) particle air abrasion with and without silane application.

An overview of current evaluation methods of postgraduate dental specialty residents.

Purpose: A lack of contemporary dental literature exists on evaluating dental residents in postgraduate education, with no standardized criteria or information on technology adoption. This study aims to understand current evaluation methods in dental residency programs and compare them to existing literature.

Methods: A survey with 22 questions was sent to program directors of 749 ADA/CODA (American Dental Association/Commission on Dental Accreditation)-accredited postgraduate dental residencies.

A survey of white spot lesion prevention and resolution in the US dental school curricula.

Purpose/objectives: White spot lesions (WSLs) are opaque white lesions on smooth tooth surfaces as a result of demineralization. Proven methods of prevention and resolution of these lesions are available yet the incidence rate, especially in orthodontic patients, is still high. Perhaps the way dental schools are educating students on the topic is insufficient.

Shear bond strength of adhesive precoated brackets: A comparative in vitro study.

Objective: This study compared the shear bond strength of orthodontic precoated brackets from different manufacturers.

Methods: Sixty extracted human premolar teeth were divided into six groups (n=10). The groups were bonded with one of the following brackets: 3M™ Unitek Victory™ Series™ with APC, 3M™ Unitek Clarity™ Advanced Ceramic™ with APC, TP Nu-Edge® NX Cobalt-Chromium and TP In-Vu® ceramic Readi-Base® both with eXact® orthodontic adhesive, 3M™ Unitek Clarity Advanced Ceramic™ and 3M™ Unitek Victory™ Series™ both with Transbond™ XT Adhesive.

Comparison of Tie Wing Fracture Resistance of Differing Ceramic Brackets.

Objective: The aim of this study was to compare the tie wing fracture resistance of 4 different manufacturers' ceramic brackets currently on the market.

Methods: The tie wings of ceramic brackets from 4 manufacturers were tested with 10 samples in each group. The brackets were Ormco Symetri, 3M Clarity, American Radiance Plus, and Dentsply Ovation S.

The prevalence of developmental dental and eruption anomalies assessed using panoramic radiographs: a retrospective study.

Developmental dental anomalies are a common finding in adolescent populations. The objective of this study was to utilize panoramic radiographs to determine the prevalence of dental anomalies and developmental disturbances in a heterogenous adolescent orthodontic patient population seeking care at a North American orthodontic residency program. A total of 1042 panoramic radiographs of 457 male and 585 female orthodontic patients aged 10 to 18 years were evaluated.

The Effect of Silver Diamine Fluoride on Bond Strength of Three Types of Bulk-Fill Restorative Materials to Dentin.

The purpose of this study was to evaluate the effect of 38 percent silver diamine fluoride (SDF) application on the shear bond strength (SBS) of three types of bulk-fill restorative materials to dentin. Eighty recently extracted deidentified, sound, human premolar teeth were sectioned to expose the mid-coronal dentin. A composite restorative material (ACTIVA™), a giomer (Beautifil), and a high-viscosity glass ionomer (HVGI) cement (Equia Forte) were used.

Quantifying the degree of white spot lesions on enamel caused by different commercial beverages using the Canary Caries Detection System: An in vitro study.

The use of sports and energy drinks has drastically increased in the adolescent population. This population often is in orthodontic treatment, and the use of such drinks with poor oral hygiene promotes the development of white spot lesions (WSLs). Quantifying the degree of the lesion has been limited in the past.

A comparison of traditional orthodontic polishing systems with composite polishing systems following orthodontic debonding.

Introduction: At the completion of treatment, the orthodontic practitioner's goal is to effectively remove all traces of adhesive and return enamel to its initial state. With the advent of new polishing systems being released each year, there may be one product that is superior to others.

Aim: The purpose of this study is to determine the efficacy of new polishing systems (in the last 5-10 years) used in general dentistry on enamel surface roughness following debond utilizing profilometery and scanning electron microscopy and compare them to established orthodontic polishing systems results.

Prevalence of Molar-Incisor Hypomineralization Within an Orthodontic Department in the United States.

The purpose of this study was to determine the prevalence and severity of molar-incisor hypomineralization (MIH) by examining standard orthodontic intraoral photographs. A total of 690 patients were evaluated retrospectively for the presence or absence and extent of MIH using standardized assessment criteria. Fourteen percent of all patients examined presented with MIH on at least one tooth.

Comparison of tensile bond strength of new and rebonded Symetri Clear™ ceramic brackets with Transbond™ XT or BluGloo™, with or without surface treatment: An in vitro study.

Objectives: This study sought to determine the bond strength of the Symetri Clear™ bracket after rebonding (reused) for a second and third time.

Materials And Methods: Symetri Clear™ mandibular incisor brackets were bonded to bovine incisors and divided into six experimental groups. Two groups underwent tensile bond strength testing, and the remaining four groups were debonded using the manufacturer's recommended plier.

In vitro comparison of shear bond strengths of ceramic orthodontic brackets with ceramic crowns using an aluminium oxide air abrasion etchant.

Objective: The aim of this study was to determine if there are differences between the shear bond strengths of 3 types of ceramic brackets when bonded to different ceramic substrates using an aluminium oxide air abrasion etchant protocol.

Materials And Methods: Substrate groups consisting of thirty-six lithium disilicate (e.max® CAD) samples and thirty-six lithium silicate infused with zirconia (CELTRA® DUO) samples were fabricated to replicate the facial surface of a left maxillary central incisor.

Dental Student and Faculty Perceptions of Uncivil Behavior by Faculty Members in Classroom and Clinic.

Uncivil behavior by a faculty member or student can threaten a classroom environment and make it less conducive to learning. The aim of this study was to explore faculty behaviors that dental faculty and students perceive to be uncivil when exhibited in the classroom and clinic. In 2015, all faculty, administrators, and students at a single academic dental institution were invited to participate in an electronic survey that used a five-point Likert scale for respondents to indicate their agreement that 33 faculty behaviors were uncivil.

Comparison of traditional orthodontic polishing systems with novel non-orthodontic methods for residual adhesive removal.

Background: Following the debonding of orthodontic brackets, the removal of residual adhesive from the enamel surface is required. Published adhesive removal protocols present conflicting advice.

Aims: The present study evaluated the surface roughness of enamel after debonding and instrumentation with non-traditional orthodontic polishing systems.

Porcelain surface conditioning protocols and shear bond strength of orthodontic brackets.

Aim: The objective of the present study was to determine which of six bonding protocols yielded a clinically acceptable shear bond strength (SBS) of metal orthodontic brackets to CAD/CAM lithium disilicate porcelain restorations. A secondary aim was to determine which bonding protocol produced the least surface damage at debond.

Methods: Sixty lithium disilicate samples were fabricated to replicate the facial surface of a mandibular first molar using a CEREC CAD/CAM machine.

Enamel surface roughness of preferred debonding and polishing protocols.

Objective: This study investigated the surface roughness of enamel after debonding and instrumentation with commonly used methods.

Methods: Part I: a survey was sent to active members of the American Association of Orthodontists to determine popular bonding, debonding, and polishing protocols. Part II: brackets were bonded to the buccal surface of 30 extracted human premolar teeth.

Relationship between hand-skill exercises and other admissions criteria and students' performance in dental school.

The aim of this study was to investigate the existence of correlations between dental admissions criteria, including a chalk carving exercise, and students' subsequent academic performance. The retrospective cohort study examined the records of dental students at Louisiana State University Health Science Center School of Dentistry for the years 1998 to 2008. Only those students who could be categorized into the following four groups were included: 1) those who graduated in the top 10% of their class, 2) those who graduated in the bottom 10% of their class, 3) those who repeated a year of dental school, and 4) those who were dismissed or resigned.

Perceptions of uncivil student behavior in dental education.

Students and faculty members in the health professions classroom are expected to exhibit professional behaviors that are conducive to maintaining a positive learning environment, but there is little published research concerning incivility in the area of dental education. The aim of this study was to evaluate differences in perceptions of incivility between dental faculty and students, between students in different courses of study, and between students in different years of dental study. The study utilized an anonymous electronic survey of all dental faculty and administrators and all dental, dental hygiene, and dental laboratory technology students at a single institution.

Investigation of force decay in aesthetic, fibre-reinforced composite orthodontic archwires.

Background/objectives: Because polymer-based materials typically exhibit viscoelastic properties, the objective was to determine if commercially available, aesthetic, fibre-reinforced composite archwires maintain continuous forces without undergoing force decay when deflected continuously.

Materials/methods: Quasi force decay was evaluated by comparing three-point bending profiles of nickel-titanium (NiTi) and fibre-reinforced composite archwires (BioMers) prior to and after 30 days of continuous deflection of either 1 or 2mm. Paired t-tests or non-parametric signed rank tests were used to statistically compare pre- and post-deflection bending forces.

The effect of water storage on the bending properties of esthetic, fiber-reinforced composite orthodontic archwires.

Objective: To study the effect of water storage on the bending properties of fiber-reinforced composite archwires and compare it to nickel-titanium (NiTi), stainless steel (SS), and beta-titanium archwires.

Materials And Methods: Align A, B, and C and TorQ A and B composite wires from BioMers Products, 0.014-, 0.

Evaluation of 3 commercially available materials for resolution of white spot lesions.

Introduction: White spot lesions are often seen on the teeth after orthodontic treatment, resulting in unpleasant esthetics. The aim of this in-vitro study was to compare subjectively and objectively the esthetic outcomes of white spot lesions treated with 3 commercially available products that have been reported to have a positive effect on the remineralization of enamel.

Methods: Forty extracted premolars were randomly allocated into 1 of 4 groups (n = 10).

Evaluation of postgraduate dental specialty residents: a survey of program directors.

The professional dental literature is lacking in information concerning the use of technology in evaluation procedures utilized in postgraduate dental education. The purpose of this study was to identify the methods of evaluation of U.S.

Three-point bending test comparison of fiber-reinforced composite archwires to nickel-titanium archwires.

Aim: Various alternatives to metal orthodontic archwires have produced varied successes over the years. This study sought to evaluate the bending properties of fiber-reinforced polymeric composite (FRC) archwires compared with similarly sized nickel-titanium (Ni-Ti) archwires.

Methods: Two different 0.