Perception of discrepancy in the upper midline position in conjunction with the gingival display according to various occupations in Iran.

Objective: This study evaluated the influence of various gingival displays on the esthetic perception in the presence of upper dental midline discrepancy.

Methods: A smiling image of a male subject was altered digitally to produce five image series: normal smile (series A), decreased tooth show (series B), increased gingival show (series C), maxillary cant (series D), and asymmetric upper lip elevation (series E). In each image series, the midline was deviated to the right and left incrementally.

Effect of 8% arginine toothpaste on Streptococcus mutans in patients undergoing fixed orthodontic treatment: randomized controlled trial.

Objective: To assess the effect of toothpaste containing 8% arginine on Streptococcus mutans (S. mutans) in dental plaque around orthodontic brackets, and to draw a comparison with a regular fluoride toothpaste.

Trial Design: A single-center, parallel-arm, triple-blind, randomized controlled trial was conducted.

Preventive practice, vaccine acceptance, and knowledge toward coronavirus disease-19: An online cross-sectional questionnaire-based report in Iranian dentists.

Background: The coronavirus disease (COVID) is predicted to cause serious mental health problems among healthcare providers (HCPs) especially dentists. Also understanding the influencing factors of the acceptance of COVID-19 vaccination among HCPs are important aspects in the design of effective strategies to improve the vaccine coverage rate. Therefore, this study aimed to assess the knowledge, vaccination acceptance, fear, and obsession, as well as the preventive practice behaviors of Iranian dentists and dental students in late 2020 toward COVID-19.

Are individuals with orofacial pain more prone to psychological distress during the COVID-19 pandemic?

Background: It is of utmost importance to identify and treat groups susceptible to psychological problems during the coronavirus disease 2019 (COVID-19) pandemic.

Objectives: This study aimed to compare the psychological status between the general population and subjects with orofacial pain (OFP) during the COVID-19 pandemic.

Material And Methods: A total of 509 young adults were recruited based on the inclusion and exclusion criteria, using the convenient sampling approach.

Evaluation of the Preventive Effect of Composites Containing Silver and TiO Nanoparticles on Demineralization around Orthodontic Brackets.

Aim: The aim of this study was to investigate the antidemineralization effect of composites containing silver and titanium dioxide (TiO) nanoparticles used for bonding brackets to tooth specimens.

Materials And Methods: A total of 75 freshly extracted teeth were etched and primed and then randomly assigned to three adhesive groups: (1) conventional orthodontic adhesive, (2) conventional adhesive mixed with TiO nanoparticles, and (3) conventional adhesive mixed with silver nanoparticles. In each group, brackets were bonded with the pertinent adhesive.

Comparison of the shear bond strength of orthodontic brackets in bonding and rebonding: preparation with laser versus conventional acid etch technique.

Objective: The purpose of this study was to compare the bond strength of orthodontic brackets using laser versus acid etching.

Background Data: Debonding of brackets is a common problem in orthodontic treatments.

Materials And Methods: Eighty extracted premolar teeth were divided into two groups.

Evaluation of the effect of buccal corridor size on smile attractiveness.

Introduction: an attractive smile helps people feel more self-confident and look younger. One of the more controversial aspects of smile attractiveness pertains to buccal corridor size. There is no previous study by those with artistic knowledge that has assessed the asthetic considerations of buccal corridor size.