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The aim of this comprehensive review was to shed light on removable intraoral Class III appliances and their dentoskeletal effects in growing Class III subjects. Recently, intraoral Class III appliances have been recommended in cases of Class III malocclusions arising from maxillary retrusion instead of the Facemask appliance, which is commonly used in children at development age, due to its disadvantages including large volume and non-esthetic design, lack of cooperation, and its contribution to the irritation in the anchorage site. For these reasons, the appliances used in the treatment of Class II malocclusions have been modified for the treatment of Class III malocclusions. Among these, Fränkel Appliance III, which was introduced by Rolf Fränkel, is the most well-known modified appliance and the other well-known examples include Bionator III, Reverse Twin Block, and Magnetic Appliance III. Additionally, the other removable intraoral appliances introduced in the literature include Modified Tandem and Double-plate Appliance. The present review examined the designs of these appliances reported in the literature as well as their skeletal and dentoalveolar effects on the maxilla and mandible.

Background The purpose of this study was to evaluate the content and quality of YouTube videos on the topic of adult orthodontics. Methods Four Turkish keywords were searched on YouTube: ``orthodontic treatment in older ages'' (ileri yaslarda ortodonti tedavisi); ``orthodontic treatment in adults'' (yetiskinlerde ortodonti tedavisi); ``braces treatment in older ages'' (ileri yaslarda video information and quality index dis teli tedavisi); and ``braces treatment in adults'' (yetiskinlerde dis teli tedavisi). A total of 184 videos, ranked according to their relevance, were examined; out of these, 52 videos on the topic of adult orthodontics were included in the study. The information content score (with a scoring system consisting of 6 questions), reliability score, (VIQI), interaction index, and viewing rate of the videos were evaluated. The Mann-Whitney U test, Student's t test, and Spearman correlation coefficients were used for statistical analysis. Results Explanations provided on all videos included in the study were given by orthodontists, to inform patients. The average content score of the videos was 2.55 ± 0.99 out of 6, and the reliability score was 3.07 ± 0.92 out of 5. The VIQI score was found to be 16.05 ± 2.76 out of 20. A total of 34 (65%) of the videos were scored as as having poor content, and 18 (35%) had rich content. Rich-content videos were observed to be significantly longer (P Conclusions Although the information provided by YouTube videos about adult orthodontics was only moderately sufficient, this study found that YouTube is a reliable source of information.

Background The purpose of the study was to evaluate dental and skeletal changes induced by tooth-bone–borne, tooth-tissue–borne, and tooth-borne rapid maxillary expansion (RME) appliances using postero-anterior (PA) cephalometric radiographs. Methods A total of 54 patients’ (25 boys, 29 girls) PA cephalometric radiographs who had bilateral posterior crossbite and RME treatment were included and divided into three groups according to the type of appliance used during treatment: tooth-bone–borne RME appliance (hybrid Hyrax) (7 boys, 11 girls, mean age 13.28 ± 1.20 years), tooth-tissue–borne RME appliance (TTB) (8 boys, 10 girls, mean age 13.08 ± 1.06 years) and tooth-borne RME appliance (Hyrax) (10 boys, 8 girls, mean age 12.05 ± 1.35 years). Pretreatment (T0) and posttreatment (T1) PA cephalometric radiographs were analyzed with Dolphin software v. 11.7 (Chatsworth, CA). The comparisons of the groups were performed with Two-way analysis of variance. P Results Significant and equal increase of right molar relationship and upper intermolar molar widths occurred in all groups. Dental midline discrepancy showed significant increase in only hybrid Hyrax group between T0 and T1. Significant increases were reported for lateronasal width in hybrid Hyrax and tooth-tissue–borne groups (P Conclusions Both skeletal and dental changes were observed after RME in all groups. However, the greatest skeletal changes were seen in hybrid Hyrax and tooth-tissue-borne groups.

OBJECTIVES To evaluate the effects of tooth-borne and tooth-bone-borne rapid maxillary expansion (RME) on soft tissue with stereophotogrammetry. SETTING AND SAMPLE POPULATION Thirty two patients (15 males and 17 females) who met inclusion criteria were divided into two groups. In the first group, tooth-borne RME appliance (hyrax) was applied to 16 patients (9 males and 7 females mean age 13.4 ± 1.3 years), and in the second group, tooth-bone-borne RME appliance (hybrid hyrax) was applied to 16 patients (6 males and 10 females, mean age 13.05 ± 1.24 years). MATERIALS AND METHODS Changes in soft tissues before RME (T0) and post-retention (T1) period were evaluated by stereophotogrammetry. Linear and angular measurements were performed. Independent- and dependent-sample t tests were used to compare intra- and inter-group differences at P

Objectives: The aim of this study was to assess the role of impacted third molar angulation on the severity of anterior crowding. Materials and Methods: Panoramic radiographs and three-dimensional (3D) digital models of 45 patients satisfying the following inclusion criteria were selected for this study. To calculate the irregularity index of Little, the sum of the contact point displacements from the anatomical contact point to the contact point among the lower canine teeth was measured on 3D digital models. Little’s irregularity index was used to classify patients as having mild, moderate, or severe crowding. For intragroup variance, comparisons T test was used. The Spearman single rank correlation coefficients were used to analyze any correlation among degree of crowding and (a) third molar inclination to base of mandible, (b) third molar inclination to occlusal plane, and (c) third molar inclination to second molar inclination respectively. Results: There were no statistical differences found in all tested parameters (i.e., third molar inclination to mandibular plane, inclination of the third molars to occlusal plane, and inclination of the third molars to second molars) among three groups (P > 0.005). Conclusion: It can be deduced that no relationship obtains among the third molar inclination to base of mandible, third molar inclination to occlusal plane, third molar inclination to second molar inclination, and the level of anterior crowding.

WOS:000560981900001 PubMed: 32813169 Purpose The aim of this retrospective study was to investigate the soft tissue changes after maxillary advancement in class III patients. Methods Pre- and post-operative lateral cephalometric radiographs of 20 patients treated with maxillary advancement surgery were included in our study. Skeletal, dental and soft tissue measurements were performed by a single researcher using Dolphin Imaging software version 11.95 (Dolphin Imaging, Chatsworth, CA, USA). Pairedttest was used for statistical evaluation andp < 0.05 was considered statistically significant. Results The amount of motion in soft tissues, respectively, are UL-E: 2.05 mm, ST.A: 0.65 mm, ST.B: - 5 mm, ST.Pog: - 5.73 mm, ST.Conv: - 3.95 mm, nasal prominence: - 1.58 mm, nasal height: 2.76 mm and upper lip length: 2.22 mm. The change of distance to horizontal and vertical reference planes are, respectively, Prn-HRL: 3.02 mm Prn-VRL: 1.76 mm Sn-HRL: 2.76 mm Sn-VRL: 2.94 mm ST.A-HRL: 3.74 mm ST.A-VRL: 3.81 mm UL-HL: 3.93 mm UL-VRL: 4.57 mm LL-HRL: 2.29 mm LL-VRL: 5.31 mm. Conclusions It can be concluded that soft tissues related to maxilla moved anteriorly due to maxillary advancement.

The purpose of this retrospective study was to correlate the narrowest area and volume of nasal cavity assessed by acoustic rhinometry (AR) with the oropharynx area and volume assessed by cone-beam computed tomography (CBCT). This retrospective study was carried out on CBCT images and AR datas of 45 mouth-breathing individuals (27 male and 18 female) aged between 12-14 years. The examinations assessed: (a) acoustic rhinometry: nasal volume (Vol) and minimum cross-sectional area (MCA) 1 and 2 of nasal cavity; (b) cone-beam computed tomography: oropharyngeal volume and area. The results were evaluated by Pearson correlation analysis. p0.05). There was a low negative correlation among airway area and nasal volume (r=-0.394; p=0.013). The highest correlation was found only between the airway area and the nasal volume when the AR results were compared with the data obtained from the CBCT imaging technique. © 2022, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved., We thank to Ferhan Elmalı for his support in the statistical assessment.

The aim of this study was to investigate the effects of toothpastes with different contents on the remineralization of white spot lesions around orthodontic brackets by quantitative light-induced fluorescence (QLF). A total of 45 freshly extracted human mandibular first molars were selected. Artificial caries lesions were created on enamel surfaces using an acidified gel system for 7 days. Initial relative fluorescence loss was calculated as the pretreatment (baseline) fluorescence value by QLF device. Molar tubes were bonded using light-cured resin composite cement. The specimens were randomly divided into three experimental groups (n = 15). Different toothpastes were applied to demineralized enamel: (1) fluoride-containing toothpaste (Colgate Total®), (2) Novamin-containing toothpaste (Sensodyne® Repair and Protect), (3) probiotic-containing toothpaste (GD Probiotic Toothpaste®). After 2 weeks of treatment, fluorescence loss and lesion area were measured with QLF. To determine fluorescence changes, intergroup comparisons were performed with a multivariate analysis of variance, followed by Tukey’s test at a probability value of p

Gokce, Gokcenur/0000-0003-2121-0552; Isler, Yalcin/0000-0002-2150-4756 WOS: 000523555900014 PubMed: 31862681 Background and objective: This study aims to assess the effect of Rapid Maxillary Expansion (RME) on Nasal Septal Deviation (NSD) changes from three-dimensional (3D) images. Methods: In this study, conebeam computed tomography (CBCT) images from 15 patients with maxillary constriction (mean age 12 +/- 1.6 years) were included. RME treatment with Hyrax appliance was performed in all patients. CBCT scans were taken at three different times; before appliance insertion (T0), after active expansion (T1) and 3 months after appliance insertion (T2). We developed a novel Matlab-based application to quantify NSD based on the tortuosity ratio by dividing the actual length of the septum by the ideal length in the midsagittal plane by using this application. Results: Tortuosity ratio (TR) values were found as 1.03 +/- 0.03 (T0), 1.02 +/- 0.02 (T1), and 1.02 +/- 0.02 (T2). Differences of TR values among these groups were evaluated using the statistical method of ANOVA (ANalysis Of VAriance) for repeated measures with the significance level of p .05). Conclusions: As a result, we can conclude that the NSD degree is affected by the RME treatment. The developed application can be used for both educational and research purposes. (C) 2019 Elsevier B.V. All rights reserved.