Effects of Emotional States on Reproducibilities of Rest Position, Social and Spontaneous Smiles, and Speech.

Objective: To evaluate the effect of emotional states on reproducibilities of rest position, social and spontaneous smiles, and speech.

Methods: A total of 30 individuals aged 18-22 years were included (mean age; 19.03 years ±1.

What is the role of second molars in leveling the curve of Spee? A finite element analysis study.

Introduction: This study aimed to assess the effect of the mandibular second molars on the stress distribution and initial displacements during leveling the curve of Spee using different archwire thicknesses and materials by means of finite element analysis.

Methods: After construction of all anatomic structures, including the mandibular alveolar bone, periodontal ligament, and dentition, 0.022-in slot brackets and 0.

Three-dimensional evaluation of social smile asymmetry in patients with unilateral impacted maxillary canine: a 3D stereophotogrammetry study.

Objective: This study aimed to evaluate social smile asymmetry in patients with unilateral impacted maxillary canine on 3D stereophotogrammetric images.

Material And Methods: The 3D social smile images of participants with unilateral impacted maxillary canine (n:20) and without impaction as a control group (n:20) were included. The images were recorded with a hand-held 3D stereophotogrammetry device (Fuel3D® Scanify®) and Geomagic Essentials 2 reverse engineering software were used for analyses.

Does YouTube provide adequate information about orthodontic pain?

Objectives: To evaluate the content and quality of information about orthodontic pain on YouTube.

Materials And Methods: YouTube was searched using the keywords "orthodontic pain" and "brace pain." A total of 65 videos were chosen for the final analysis.

Is the Nasolabial Region Symmetric in Individuals With Cleft Lip and Palate?

Objective: To assess the nasolabial symmetry in smile and resting position in individuals with nonsyndromic unilateral cleft lip and palate (UCLP) and compare with Class I individuals without cleft lip and palate (CLP).

Materials And Methods: Frontal photographs of 40 individuals with UCLP (mean age 14.30 ± 0.

YouTube™ as an information source for regenerative endodontic treatment procedures: Quality and content analysis.

Background: Regenerative endodontic procedures (REPs) are one of the most important developments in dental practice, and in the era of Covid 19 pandemic, audio-visual contents of YouTube™ could be an information source for dental students, practitioners and patients. The aim of this study was to evaluate the quality, content and the demographics of YouTube™ videos about REPs.

Methods: A search on YouTube™ was performed for REPs using "endodontic regeneration", "pulp regeneration", "regenerative endodontics", "regenerative endodontic procedures", "revascularization" and "revitalization" keywords.

Is YouTube an adequate patient resource about orthodontic retention? A cross-sectional analysis of content and quality.

Introduction: The study aimed to evaluate the content and quality of information offered by YouTube for patients seeking information related to orthodontic retainers.

Methods: YouTube was searched using the keyword "orthodontic retainers" from Google Trends. From the first 120 results, 97 videos were selected to be analyzed.

Mesiodistal Angulation of Each Whole Tooth in Patients With Nonsyndromic Unilateral Cleft Lip and Palate: Is it Symmetrical?

Objective: To assess the symmetry of the mesiodistal angulations of maxillary and mandibular teeth in patients with unilateral cleft lip and palate (UCLP) and compare with the class I control group without cleft lip and palate (CLP).

Design: A retrospective study.

Setting: University department.

Displacement and stress distribution of Kilroy spring and nickel-titanium closed-coil spring during traction of palatally impacted canine: A 3-dimensional finite element analysis.

Objective: To compare the stress distribution and initial displacements during traction of palatally impacted canine between Kilroy and nickel-titanium (NiTi) closed-coil springs by means of the finite element analysis.

Setting And Sample Population: A finite element method analysis of two traction methods for a maxillary impacted canine.

Materials And Methods: The corresponding periodontal ligaments (PDLs), brackets, molar tubes and a 0.

Effect of facial profile convexity on the perception of mandibular asymmetry using three-dimensional stereophotogrammetric images.

Objective: The aim of this study was to test the hypothesis that sagittal anomalies have an effect on the perception of mandibular asymmetry. Secondly, it aimed to determine the asymmetry perception threshold of orthodontist and laypeople.

Setting And Sample Population: A total of 90 individuals were included in the study from different professions (Orthodontist: n:45, layperson: n:45).

Dental crown symmetry in unilateral cleft lip and palate patients: A three-dimensional analysis on digital dental models.

Objectives: The purpose of this study was to conduct a 3-dimensional assessment of possible dental crown asymmetry in dental crown shape and/or size that was not clinically visible in unilateral cleft lip and palate (UCLP) patients on the maxilla and mandible and make a comparison to the control group without CLP.

Setting And Sample Population: The maxillary and mandibular digital models of orthodontically treated 35 individuals with non-syndromic UCLP (mean age: 14.6 ± 2.

Hard- and soft-tissue symmetry comparison in patients with Class III malocclusion.

Objective: Our aim was to describe hard- and soft-tissue asymmetry in people who have a skeletal Class III malocclusion, and to compare with those without asymmetry. We also performed a regional analysis of a possible correlation between facial soft- and hard-tissue asymmetries.

Methods: This retrospective study was performed with the use of the computed tomographic scans of 60 subjects.

How are faces with increased and decreased lower facial height perceived visually?

Objective: The aim of this study was to assess how faces with different lower facial height (LFH) were visually perceived by laypersons using eye-tracking technology.

Materials And Method: A total of 48 facial images of volunteers with different LFH (normodivergent, hypodivergent, hyperdivergent) were randomly viewed by 50 participants (25 male, 25 female) using Tobii Eye Tracker (Tobii T60, Tobii Technology AB, Sweden). Facial images with normal lower anterior facial height (LAFH) were used as the control group.

Lingual orthodontic treatment: A YouTube™ video analysis.

Objectives: The aim of this study was to examine the quality of information offered for patients seeking information on lingual orthodontic treatment.

Materials And Methods: YouTube™ was searched for videos about lingual orthodontic treatment using the key word "lingual braces" from the Google Trends application. One hundred and four videos were selected to be analyzed from the first 120 results.

Visual perception of faces with unilateral and bilateral cleft lip and palate: An Eye-Tracking Study.

Objectives: To test the hypotheses that there are differences between orthodontists, individuals with cleft lip and palate (CLP) and laypersons in the visual perception of faces with unilateral (UCLP) and bilateral cleft lip and palate (BCLP), the faces with UCLP and BCLP are visually perceived differently and the hierarchy of visual attention changes when viewing individuals with CLP.

Setting And Sample Population: Department of Orthodontics and Experimental Psychology at Ege University, İzmir. Sixty images (faces with a social smile and at rest) of 30 volunteers (unaffected controls, UCLP, BCLP) were viewed by 80 participants: orthodontists, individuals with CLP and laypersons.

Root Resorption in Orthodontics.

Root resorption has been the subject of many studies, and it can be caused by many factors such as the mechanics used during orthodontic treatment, factors related to the type and magnitude of the force, and other factors related to treatment such as the type of tooth movement and malocclusion. The clinical importance of root resorption is directly related to its detectability. Therefore, orthodontic and biological factors that may cause root resorption were evaluated using various imaging methods in present use.

Evaluation of the Relationship between Curve of Spee, WALA-FA Distance and Curve of Wilson in Normal Occlusion.

Objective: To test the hypotheses that (i) there is a significant correlation between the curve of Spee (COS), basal arch (WALA ridge) to dental arch distance (WALA-FA distance) and curve of Wilson (CW) and that (ii) the deepening of the COS is affected by the CW and the WALA-FA distance.

Methods: Mandibular models of 50 patients aged between 20 and 35 years were scanned with TRIOS. The xyz coordinate system was determined, and a reference occlusal plane was generated.

Three-dimensional evaluation of social smile symmetry.

Objective: To evaluate the social smile symmetry using three-dimensional (3D) stereophotogrammetric images.

Materials And Methods: The study was conducted with 3D facial images of 30 individuals (age range 13-25 years). The rest position was considered as the reference image and the social smile image was aligned on this image using the best-fit alignment method.

Three-dimensional evaluation of morphologic tooth symmetry in various malocclusions.

Introduction: The aim of this study was to evaluate the morphologic symmetry of the maxillary and mandibular teeth between the left and right quadrants in 3 dimensions using advanced engineering software.

Methods: The total sample comprised 120 dental casts of 60 patients with dental and skeletal Class I, Class II, and Class III malocclusions. They were divided into 3 groups of 40 dental casts (20 maxillary, 20 mandibular) belonging to 20 patients.

Perception of Smile Esthetics by Orthodontists and Laypersons: Full Face and A Localized View of The Social and Spontaneous Smiles.

Objective: The aim of the study was to evaluate the parameters that might affect the esthetic perception of localized and full-face views of social and spontaneous smiles.

Methods: Video records of 40 individuals were used. Further, 200 images of each individual were captured for social and spontaneous smiles with and without calibration glasses.

Three-dimensional analysis of tooth movements after palatal miniscrew-supported molar distalization.

Introduction: The aim of this prospective clinical study was to evaluate the dentoalveolar effects of a palatal miniscrew-supported molar distalization appliance using a 3-dimensional reverse engineering method.

Methods: This study sample comprised 21 patients at an average age of 13.6 years with a bilateral Class II molar relationship.

Effects of rapid maxillary expansion on facial soft tissues : Deviation analysis on three-dimensional images.

Objective: Changes in soft tissue in various morphological regions of the face immediately after rapid maxillary expansion (RME) were examined using three-dimensional (3D) deviation analyses.

Patients And Methods: A total of 50 patients were included in the study; 25 patients (11 female and 14 male) presented with a unilateral or bilateral posterior crossbite malocclusion requiring RME. In addition, 25 patients (13 female and 12 male) were included as a control group.

Reproducibility of the lip position at rest: A 3-dimensional perspective.

Introduction: In this study, we evaluated the reproducibility of the lip position at rest in 3 dimensions using reverse engineering software and stereophotogrammetric images.

Methods: We used 3dMD Flex (3dMD, Atlanta, Ga) to obtain 60 stereophotogrammetric images from the same participant. Thirty images were obtained in 3 sessions on the same day, and the procedure was repeated 6 weeks later for 30 more images.