American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"Microcomputed tomography assessment of microleakage and void formation under ceramic adhesive precoated orthodontic brackets.","authors":"Artemisa Adıgüzel, Ersin Yıldırım","doi":"10.1016/j.ajodo.2024.09.013","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.09.013","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to evaluate microleakage, voids, and gaps in ceramic adhesive precoated (APC) brackets using microcomputed tomography and investigate their correlation with bond strength.</p><p><strong>Methods: </strong>A total of 52 human premolars were included in this study. The teeth were randomly divided into 4 groups of 13 teeth each. The brackets used in this study were the Clarity Advanced APC Flash-free Ceramic Bracket (3M Unitek, Monrovia, Calif) and the Clarity Advanced Ceramic Bracket (3M Unitek, Monrovia, Calif). The materials used for each group were as follows: (1) 37% phosphoric acid, Transbond XT primer (3M Unitek, Monrovia, Calif), and APC Flash-free Ceramic Bracket; (2) Transbond Plus self-etching primer and APC Flash-free Ceramic Bracket; (3) 37% phosphoric acid, Transbond XT primer, Transbond XT light-cure adhesive, and Clarity Advanced Ceramic Bracket; and (4) Transbond Plus self-etching primer, Transbond XT light-cure adhesive, and Clarity Advanced Ceramic Bracket. The teeth were scanned using microcomputed tomography for microleakage, void, and gap analyses. The bond strength was measured and recorded in megapascals. One-way analysis of variance was used to compare parameters with a normal distribution. The Kruskal-Wallis test was used to compare parameters that did not comply with the normal distribution. The relationships among variables were evaluated using Spearman and Pearson correlation coefficients.</p><p><strong>Results: </strong>There were no statistically significant differences among the groups in terms of gap volume, void volume, and total void and gap volume values (P >0.05). No significant differences were observed in relation to bond strength (P >0.05). The mean bond strength was 20.42, 19.87, 19.28, and 19.47 for groups 1-4, respectively. The Spearman's correlation analysis results demonstrated that the bond strength was significantly affected by the gap volume and total void and gap volumes. The bond strength increased with reduced total volume of voids and gaps.</p><p><strong>Conclusions: </strong>There was no difference between the APC Flash-free Ceramic Bracket and the Clarity Advance Ceramic Bracket regarding bond strength, void volume, gap volume, and total void and gap volume. The gap volume and total void and gap volumes significantly affected the bond strength. The bond strength increased with decreased total void and gap volumes. The bond strengths of the APC Flash-free Ceramic Brackets were comparable to those of the ceramic brackets bonded using the conventional method.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142711795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Treatment motivation, psychosocial impact, and perfectionism in children and adult orthodontic patients: A cross-sectional study.","authors":"Huanzhuo Zhao, Baraa Daraqel, Man Jiang, Tianci Zhang, Xiang Li, Jicheng Sun, Leilei Zheng","doi":"10.1016/j.ajodo.2024.09.012","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.09.012","url":null,"abstract":"<p><strong>Introduction: </strong>With a shift in orthodontics from a more traditional biomedical model toward a more biopsychosocial model, orthodontists must understand their patients' psychological condition. This study aimed to investigate treatment motivation, psychosocial impact from malocclusion, and perfectionism in children and adult orthodontic patients and to examine the relationships among these various factors.</p><p><strong>Methods: </strong>A total of 193 participants (114 children and 79 adults) were included. All participants completed a treatment motivation questionnaire, Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ), Frost Multidimensional Perfectionism Scale (FMPS), and self-perceived Aesthetic Component of the Index of Orthodontic Treatment Need. Malocclusion severity was assessed using the Dental Health Component of the Index of Orthodontic Treatment Need by 1 orthodontist.</p><p><strong>Results: </strong>Statistically significant differences were found between children and adults regarding motivation concerning function, PIDAQ total, as well as subscores except for dental self-confidence (P <0.01) and subscores of FMPS, such as concerns over mistakes and parental expectations (P <0.05). The multiple regression analysis demonstrated a direct relationship between PIDAQ and age, gender, total FMPS, self-perceived Aesthetic Component of the Index of Orthodontic Treatment Need, and motivation (P <0.01).</p><p><strong>Conclusions: </strong>Adults anticipate greater improvement in oral function and experience greater negative psychosocial impact from malocclusion compared with children. Orthodontic patients with higher age, being female, high level of perfectionism, or negative self-perception of dental esthetics are associated with greater negative psychosocial impact from malocclusion. In addition, patients experiencing a greater negative psychosocial impact tend to have a strong motivation for orthodontic treatment.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142683323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimal sites for mini-implant insertion into the infrazygomatic crest according to different craniofacial morphologies: A cross-sectional cone-beam computed tomography study.","authors":"Carolina Rojo Sanchis, Juan Carlos Pérez-Varela, Natalia Zamora-Martínez, Verónica García-Sanz, Beatriz Tarazona-Álvarez, Vanessa Paredes-Gallardo","doi":"10.1016/j.ajodo.2024.09.016","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.09.016","url":null,"abstract":"<p><strong>Introduction: </strong>The infrazygomatic bone crest and other extraalveolar regions represent a viable option for the placement of temporary anchorage devices when distalizing the maxillary arch. This approach allows for the movement of the dentition without concern for potential collisions among dental structures. Nevertheless, it is of the utmost importance to conduct a thorough examination of the anatomy of this region before the placement of mini-implants to prevent potential injuries, such as maxillary sinus perforations. The objective of this study was to quantify the depth of the infrazygomatic crest and evaluate its correlations with age, gender, skeletal classification, and vertical pattern.</p><p><strong>Methods: </strong>The study sample of this cross-sectional, retrospective study consisted of 201 cone-beam computed tomography scans collected from patients treated at the master's program in orthodontics at the University of Valencia and at a private dental clinic. The cone-beam computed tomography scans were collected for 5 years, from January 2017 to May 2022. The total and intraalveolar lengths were defined and measured at 3 points: the distal roots of the maxillary second molars, the distal roots of the maxillary first molars, and the mesial roots of the maxillary first molars. These measurements were taken on both the right and left sides using the Carestream 3D Imaging System (Atlanta, Ga).</p><p><strong>Results: </strong>The total length (TL) at the mesiobuccal level of the first molars was found to be significantly longer on both sides (P = 0.001). The intraalveolar length exhibited statistically significant differences between the right and left sides, with those of the left side exhibiting greater length (P <0.001). The normodivergent patterns demonstrated lower TL values than hypodivergent (P = 0.006) and hyperdivergent patterns (P = 0.033).</p><p><strong>Conclusions: </strong>A statistically significant inverse relationship was observed between the distance from the cementoenamel junction to the vestibular bone crest and the total and intraalveolar lengths in the studied regions. The TL was greatest in the region of the mesiobuccal root of the maxillary first molars, followed by the region of the distal root of the second molars, and finally, the region of the distobuccal root of the maxillary first molars. Patients with normodivergent patterns exhibited the lowest total infrazygomatic ridge height.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142683312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of virtual bracket removal by artificial intelligence and thermoplastic retainer fit","authors":"Tarek ElShebiny ,&nbsp;Amanda Eden Paradis ,&nbsp;Fred Kurtis Kasper ,&nbsp;Juan Martin Palomo","doi":"10.1016/j.ajodo.2024.07.020","DOIUrl":"10.1016/j.ajodo.2024.07.020","url":null,"abstract":"<div><h3>Introduction</h3><div>Digital orthodontics is here to make our specialty more efficient, and the integration of artificial intelligence (AI) is no exception. This study aimed to compare the accuracy of a workflow involving virtual bracket removal (VBR) by AI to traditional bracket removal. A secondary objective was to compare the clinical fit of thermoplastic orthodontic retainers fabricated from 3-dimensional (3D) printed models created by each method.</div></div><div><h3>Methods</h3><div>Thirty dental arches were scanned intraorally with the fixed labial orthodontic brackets in place, creating 30 standard tessellation language (STL) files which were labeled “pre-debond.” For each patient, all brackets and residual adhesive were then clinically removed, and an additional intraoral scan was taken and labeled “post-debond.” Each pre-debond scan was uploaded to the uDesign by uLab software (version 7.0; uLab Systems, Inc, Memphis, Tenn), which uses AI to virtually remove orthodontic brackets using 1-touch bracket identification. New STL files were created for each of the 30 arches and labeled VBR. Best fit superimpositions were performed using Geomagic Control X (3D Systems, Inc, Rock Hill, SC), and data were collected as both numerical values and color-coded deviation maps. Superimposition data were segmented for each arch (anterior, posterior right, and posterior left) to determine if the arch location was a relevant factor. All post-debond and VBR STL files were 3D printed. Thermoplastic retainers were fabricated on each 3D-printed model. Retainers were delivered to patients and clinically graded by 2 practitioners.</div></div><div><h3>Results</h3><div>There was a statistically significant difference in standard deviation and out-of-tolerance percentage values when comparing traditional debonded arches and virtually debonded arches when using sextant locations as a factor (anterior, posterior right, and posterior left). Grading scores for both evaluators show a statistically significant difference for the evaluation of facial surface adaptation and snap-fit acceptability between retainer fabrication methods. However, there was no correlation between out-of-tolerance values and clinical retainer fit evaluation among any of the graded variables in either the maxillary or mandibular arches.</div></div><div><h3>Conclusions</h3><div>VBR by AI is considered accurate enough to be used for the fabrication of clinically acceptable thermoplastic orthodontic retainers.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Pages 608-615"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Directory: AAO Officers and Organizations","authors":"","doi":"10.1016/S0889-5406(24)00459-1","DOIUrl":"10.1016/S0889-5406(24)00459-1","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Page 625"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Individual patient data meta-analysis: An example","authors":"Yu-Kang Tu ,&nbsp;Nikolaos Pandis ,&nbsp;Loukia Spineli","doi":"10.1016/j.ajodo.2024.09.003","DOIUrl":"10.1016/j.ajodo.2024.09.003","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Pages 619-623"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On being accommodating","authors":"Laurance Jerrold","doi":"10.1016/j.ajodo.2024.09.002","DOIUrl":"10.1016/j.ajodo.2024.09.002","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Pages 616-618"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Keep it neutral","authors":"Peter M. Greco","doi":"10.1016/j.ajodo.2024.09.001","DOIUrl":"10.1016/j.ajodo.2024.09.001","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Pages 513-514"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"December 2024","authors":"Dr Allen H. Moffitt (CE Editor)","doi":"10.1016/j.ajodo.2024.10.004","DOIUrl":"10.1016/j.ajodo.2024.10.004","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Pages 624.e1-624.e2"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Information for readers","authors":"","doi":"10.1016/S0889-5406(24)00450-5","DOIUrl":"10.1016/S0889-5406(24)00450-5","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"166 6","pages":"Page A6"},"PeriodicalIF":2.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}