Correlation of alveolar bone thickness and central incisor inclination in skeletal Class I and II malocclusions with different vertical skeletal patterns: A CBCT study.

Introduction: This study aimed to assess the alveolar bone thickness (ABT) and labiolingual inclination of maxillary and mandibular central incisors in patients with Class I and II skeletal patterns with normal-angle, high-angle, and low-angle vertical patterns.

Methods: The study sample consisted of 200 cone-beam computed tomography scans of patients with skeletal Class I and II malocclusions. Each group was further divided into low-angle, normal-angle, and high-angle subgroups.

Does Maxillomandibular Counterclockwise Rotation Affect Surgical Stability in Class III Skeletal Patients with High Plane Angle? A Retrospective Longitudinal Study.

Purpose: In class III, skeletal patients with high plane angle, counterclockwise rotation of maxillomandibular units is necessary. The study was aimed to evaluate the long-term stability of the change of mandibular plane in patients with class III deformity.

Materials And Methods: This is a retrospective longitudinal clinical study.

Laser Assisted Surgical and Orthodontic Treatment of a Dilacerated Impacted Maxillary Incisor: A Case Report.

Impaction of the anterior teeth, which is less frequent in central incisors, can cause serious esthetic and subsequent psychological problems for patients during the mixed dentition period. Traumatic injury to deciduous teeth is the most common etiologic factor. Thus, treatment of maxillary incisor impaction is highly important.

Estimating and comparing the duration of adolescent growth peak in skeletal class I and III subjects using cervical vertebral maturation method.

Background: Estimating skeletal maturation and growth potential is essential for developing adolescents' best orthodontic treatment plan. The purpose of this study was to compare the duration of adolescent growth peak in subjects of skeletal classes I and III using the cervical vertebral maturation (CVM) method.

Methods: This retrospective cross-sectional study included 116 Iranian subjects (skeletal class I = 68, skeletal class III = 48) aged 8-16 years old and without previous orthodontic treatments.

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.

Effect of orthodontic forces on root length of immature mandibular second premolars: a split-mouth randomized clinical trial.

Objective: To assess the effect of orthodontic forces on changes in root length of immature mandibular second premolars.

Methods: Sixty-four mandibular second premolars (MSP) with immature apices (left and right sides) of 32 patients aged between 10 and 13 years were evaluated. Orthodontic treatment was started after obtaining periapical radiographs (T1) from the MSPs of each patient.

Evaluation and comparison of antibacterial and physicochemical properties of synthesized zinc oxide-nano particle-containing adhesive with commercial adhesive: An experimental study.

Introduction: Enamel surface demineralization is one of the most common issues occurring subsequent to orthodontic treatments. This study aims to synthesize a homogenous adhesive, containing zinc oxide nano particles for the purpose of evaluation of antibacterial and mechanical properties in bonding of orthodontic brackets.

Materials And Methods: Assessments were based on three groups: a control group (synthesized adhesive), ZnO group (synthesized adhesive containing 1.

The correlation between external apical root resorption and electric pulp test responses: a prospective clinical trial.

Objective: The current study investigated the correlation between pulpal sensitivity to the electric pulp tester (EPT) and external apical root resorption (EARR) in four types of maxillary anterior teeth of fixed orthodontic treatment patients.

Methods: In this prospective cohort study, 232 anterior teeth of 58 patients (mean age 18.96 ± 6.

Dynamic mechanical and thermal properties of clear aligners after thermoforming and aging.

Background: Based on the role of properties of aligner materials on their efficiency, we aimed to assess their thermomechanical properties after thermoforming and simulated aging.

Methods: In this experimental study, 96 samples of polyethylene terephthalate glycol (PETG) aligners (Duran and Erkodur) were prepared and divided to three groups: control (C), after thermoforming (T), after thermoforming and aging (TA). Thermoforming was done through 3D-printed molds, and aging was exerted by 200 thermal cycles after immersion in 37°C distilled water for 24h.

Relationship of the rs10850110 and rs11611277 polymorphisms of the MYO1H gene with non-syndromic mandibular prognathism in the Iranian population.

Background: The myosin 1H (MYO1H) gene, located on chromosome 12, encodes the unconventional MYO1H protein, which is involved in the intracellular movement and morphology of chondrocytes, and plays a vital role in the prognathism or retrognathism of the mandible.

Objectives: The objective of this study was to assess the relationship between the polymorphisms of the MYO1H gene and mandibular prognathism in the Iranian population.

Material And Methods: The current project evaluated 64 patients with mandibular prognathism requiring orthognathic surgery and 60 controls with skeletal class I occlusion.

Correlation assessment of cervical vertebrae maturation stage and mid-palatal suture maturation in an Iranian population.

Aim: The aim of the current study was to evaluate the correlation of skeletal age based on cervical vertebrae maturation (CVM) stage and mid-palatal suture (MPS) maturation in an Iranian population.

Material And Methods: This was a cross-sectional analytic study. A total number of 93 samples were included.

Effect of different debonding techniques on shear bond strength and enamel cracks in simulated clinical set-ups.

Objective: The aim of this study was to evaluate the relationship between debonding forces and enamel cracks length change between different debonding techniques.

Methods: 80 extracted premolar teeth with intact buccal enamel were divided into five groups. In each group, enamel cracks were evaluated by stereomicroscope before and after debonding.

Common conditions associated with mandibular canal widening: A literature review.

Purpose: The aim of this study was to review the common conditions associated with mandibular canal widening.

Materials And Methods: General search engines and specialized databases including Google Scholar, PubMed, PubMed Central, Science Direct, and Scopus were used to find relevant studies by using the following keywords: "mandibular canal," "alveolar canal," "inferior alveolar nerve canal," "inferior dental canal," "inferior mandibular canal," "widening," "enlargement," "distension," "expansion," and "dilation."

Results: In total, 130 articles were found, of which 80 were broadly relevant to the topic.

Shear bond strength and adhesive remnant index of orthodontic brackets bonded to enamel using adhesive systems mixed with TiO2 nanoparticles.

Introduction: It is recently suggested that titanium dioxide (TiO2) nanoparticles can be added to bracket luting agents in order to reduce bacterial activity and protect the enamel. However, it is not known if this addition can affect the shear bond strength (SBS) below clinically acceptable levels. Therefore, this study examined this matter within a comprehensive setup.

Impact of malocclusion severity on oral health-related quality of life in an Iranian young adult population.

Objective: This study aimed to assess the relationship between malocclusion severity and oral health-related quality of life (QoL) of 18 to 25-year-old Iranians who sought orthodontic treatment.

Materials And Methods: A total of 126 patients between 18 and 25 years attending some private orthodontic clinics answered the oral health impact profile-14 (OHIP-14) and a demographic questionnaire. Two calibrated orthodontists recorded the Index of Orthodontic Treatment Need-Dental Health Component (IOTN-DHC) determining the severity of malocclusion (Kappa = 0.

The effect of toothpastes with bleaching agents on the force decay of elastomeric orthodontic chains.

Objective: The aim of this study was to evaluate the effect of agents available in whitening toothpastes (Crest and Sensodyne) on the force decay of elastomeric chains used in orthodontics.

Materials And Methods: A total of 300 specimens of elastomeric chains were divided into five groups ( = 60) and were evaluated. These groups included (1) the regular Crest® toothpaste and distilled water solution, (2) whitening Crest toothpaste and distilled water solution, (3) regular Sensodyne toothpaste and distilled water solution, (4) whitening Sensodyne toothpaste and distilled water solution, and (5) distilled water as a control group.

Effect of bracket base design on shear bond strength to feldspathic porcelain.

Objectives: This study sought to assess the effect of bracket base design on the shear bond strength (SBS) of the bracket to feldspathic porcelain.

Materials And Methods: This in vitro, experimental study was conducted on 40 porcelain-fused-to-metal restorations and four different bracket base designs were bonded to these specimens. The porcelain surfaces were etched, silanized, and bonded to brackets.

Effect of Low-Level Laser Therapy on Orthodontic Tooth Movement: A Clinical Investigation.

Objectives: One major drawback of orthodontic treatment is its long duration due to slow tooth movement and the pain at the onset of treatment following application of forces. There is controversy regarding the efficacy of laser for decreasing the treatment time and pain of orthodontic treatment. The purpose of this study was to investigate the effect of low level diode laser on the rate of orthodontic tooth movement and the associated pain.