American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"Author’s response","authors":"Alessandro Bruni","doi":"10.1016/j.ajodo.2024.10.006","DOIUrl":"10.1016/j.ajodo.2024.10.006","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 2","pages":"Pages 135-136"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042750","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":"Automatic 3-dimensional quantification of orthodontically induced root resorption in cone-beam computed tomography images based on deep learning","authors":"Qianhan Zheng ,&nbsp;Lei Ma ,&nbsp;Yongjia Wu ,&nbsp;Yu Gao ,&nbsp;Huimin Li ,&nbsp;Jiaqi Lin ,&nbsp;Shuhong Qing ,&nbsp;Dan Long ,&nbsp;Xuepeng Chen ,&nbsp;Weifang Zhang","doi":"10.1016/j.ajodo.2024.09.009","DOIUrl":"10.1016/j.ajodo.2024.09.009","url":null,"abstract":"<div><h3>Introduction</h3><div>Orthodontically induced root resorption (OIRR) is a common and undesirable consequence of orthodontic treatment. Traditionally, studies employ manual methods to conduct 3-dimensional quantitative analysis of OIRR via cone-beam computed tomography (CBCT), which is often subjective and time-consuming. With advancements in computer technology, deep learning-based approaches have gained traction in medical image processing. This study presents a deep learning-based model for the fully automatic extraction of root volume information and the localization of root resorption from CBCT images.</div></div><div><h3>Methods</h3><div>In this cross-sectional, retrospective study, 4534 teeth from 105 patients were used to train and validate an automatic model for OIRR quantification. The protocol encompassed several steps: preprocessing of CBCT images involving automatic tooth segmentation and conversion into point clouds, followed by segmentation of tooth crowns and roots via the Dynamic Graph Convolutional Neural Network. The root volume was subsequently calculated, and OIRR localization was performed. The intraclass correlation coefficient was employed to validate the consistency between the automatic model and manual measurements.</div></div><div><h3>Results</h3><div>The proposed method strongly correlated with manual measurements in terms of root volume and OIRR severity assessment. The intraclass correlation coefficient values for average volume measurements at each tooth position exceeded 0.95 (<em>P</em> &lt;0.001), with the accuracy of different OIRR severity classifications surpassing 0.8.</div></div><div><h3>Conclusions</h3><div>The proposed methodology provides automatic and reliable tools for OIRR assessment, offering potential improvements in orthodontic treatment planning and monitoring.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 2","pages":"Pages 188-201"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142584908","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 ,&nbsp;Baraa Daraqel ,&nbsp;Man Jiang ,&nbsp;Tianci Zhang ,&nbsp;Xiang Li ,&nbsp;Jicheng Sun ,&nbsp;Leilei Zheng","doi":"10.1016/j.ajodo.2024.09.012","DOIUrl":"10.1016/j.ajodo.2024.09.012","url":null,"abstract":"<div><h3>Introduction</h3><div>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.</div></div><div><h3>Methods</h3><div>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.</div></div><div><h3>Results</h3><div>Statistically significant differences were found between children and adults regarding motivation concerning function, PIDAQ total, as well as subscores except for dental self-confidence (<em>P</em> &lt;0.01) and subscores of FMPS, such as concerns over mistakes and parental expectations (<em>P</em> &lt;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 (<em>P</em> &lt;0.01).</div></div><div><h3>Conclusions</h3><div>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.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 2","pages":"Pages 210-220.e2"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","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":"Evaluating anchorage and torque control in adolescent patients with Class II Division 1 malocclusion among 3 appliances","authors":"Huanhuan Chen ,&nbsp;Guangying Song ,&nbsp;Yi Fan ,&nbsp;Jiuhui Jiang ,&nbsp;Ruoping Jiang ,&nbsp;Xiaoyun Zhang ,&nbsp;Gui Chen ,&nbsp;Hong Su ,&nbsp;Tianyi Wang ,&nbsp;Bing Han ,&nbsp;Tianmin Xu","doi":"10.1016/j.ajodo.2024.09.005","DOIUrl":"10.1016/j.ajodo.2024.09.005","url":null,"abstract":"<div><h3>Introduction</h3><div>The objective of this study was to compare the differences in anchorage and torque control among the Tweed edgewise, Roth, and physiological anchorage Spee-wire systems (PASS) appliances (Zhejiang Xinya Technology Co, Ltd, Hangzhou, China).</div></div><div><h3>Methods</h3><div>A sample of 90 adolescent patients with Angle Class II Division 1 malocclusion (30 Tweed edgewise appliances, 30 Roth appliances, and 30 PASS appliances) with maximum anchorage requirements in the maxilla were collected for this study. The pretreatment baseline levels of the 3 groups were compared initially, and then the differences between the 3 appliances in anchorage and torque control were analyzed after superimposing the pretreatment and posttreatment lateral cephalograms and maxillary 3-dimensional (3D) digital models, respectively.</div></div><div><h3>Results</h3><div>There was no statistical difference in the pretreatment baseline levels of 3 groups, including gender, age, sagittal skeletal types (ANB), vertical skeletal types (SN-GoGn), anchorage requirements, and occlusal plane inclination (SN-OP). After superimposing the pretreatment and posttreatment lateral cephalograms and 3D digital models, respectively, no statistical differences were observed between the measurement results obtained from lateral cephalograms and 3D digital models. Among the measurement variables assessed in this study, statistical differences were observed in the mesial displacement of maxillary first molars, the incisor retraction, and the torque variation of maxillary central incisors among the 3 groups. Specifically, the Tweed group exhibited lower mesial displacement of maxillary first molars compared with the PASS and Roth groups. Furthermore, the Tweed group exhibited the greatest amount of incisor retraction and torque variation of maxillary central incisors, followed by the Roth group and then the PASS group. The remaining measurement variables for the 3 groups showed no statistical differences, including vertical variation of maxillary first molars and central incisors, torque variation of maxillary first molars and canines, mesiodistal inclination variation of maxillary first molars and canines, width variation between maxillary first molars, and width variation between maxillary canines.</div></div><div><h3>Conclusions</h3><div>Compared with contemporary preadjusted straight wire appliances, the Tweed edgewise appliance has superiority in molar anchorage control. In contrast, compared with the Roth appliances, the PASS appliances without any auxiliary anchorage devices could make full use of physiological anchorage to achieve adequate control of molar anchorage. Clinical orthodontists may need to pay extra attention to physiological anchorage. The difference in torque control varies depending on the respective characteristics of bracket designs.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 2","pages":"Pages 166-176"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142479950","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":"Soft tissue changes during orthopedic therapy: An in vivo 3-dimensional facial scan study","authors":"Federica Pellitteri,&nbsp;Paolo Albertini,&nbsp;Luca Brucculeri,&nbsp;Francesca Cremonini,&nbsp;Daniela Guiducci,&nbsp;Virginia Falconi,&nbsp;Luca Lombardo","doi":"10.1016/j.ajodo.2024.08.016","DOIUrl":"10.1016/j.ajodo.2024.08.016","url":null,"abstract":"<div><h3>Introduction</h3><div>The aim was to compare the soft tissue changes in pretreatment and posttreatment facial scans of patients who had undergone various orthopedic treatments vs a control group of untreated growing patients.</div></div><div><h3>Methods</h3><div>Facial scans were performed before (T0) and after (T1) orthopedic treatment in 15 patients prescribed rapid palatal expander (RPE), 15 cervical headgear (HG), and 15 facemasks (FM), as well as 6 months apart in 15 untreated growing patients. After best-fit scan alignment using Geometric Control X software (3D Systems Inc, Rock Hill, SC), a 3-dimensional (3D) analysis of soft tissue changes was performed, comparing 3D reference points (total 22) and 8 areas on T0 and T1 scans. Kruskal-Wallis nonparametric tests and pairwise comparison with Bonferroni’s correction were applied to identify any statistically significant differences among groups (<em>P</em> &lt;0.05). All analyses were conducted with SPSS software (version 28; IBM, Armonk, NY).</div></div><div><h3>Results</h3><div>At T1, reduced soft tissue projection was found at the nose and upper lip in the HG group, the lower lip in the HG and RPE groups, and the chin in the FM and RPE groups. The RPE group displayed a statistically significant increase in facial divergence, confirmed by gnathion position (RPE vs FM [<em>P</em> = 0.018] and RPE vs control [<em>P</em> = 0.046]), as well as an increase in the soft tissue projection of both cheeks (left cheek in range of 1-2 mm [<em>P</em> = 0.030] and range of 0 to −1 mm [<em>P</em> = 0.022]; right cheek in range of 1-2 mm [<em>P</em> = 0.003] and range −1 to −2 mm [<em>P</em> = 0.001]). There were no clinically significant differences among groups in mandibular right and left body areas.</div></div><div><h3>Conclusions</h3><div>The 3D facial analysis revealed significant differences in soft tissues among orthopedic treatments, especially at the upper and lower lip and chin areas, as compared with untreated patients.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 2","pages":"Pages 154-165"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142479953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of nutrition changes during rapid maxillary expansion in adolescents.","authors":"Mustafa Caferoğlu, Mehmet Ali Yavan, Nihal Hamamcı","doi":"10.1016/j.ajodo.2024.11.013","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.11.013","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to evaluate the nutritional changes in adolescents undergoing bonded rapid maxillary expansion (RME).</p><p><strong>Methods: </strong>The study included 30 patients with maxillary posterior crossbite aged 12-16 years (21 girls and 9 boys) who were treated at the Department of Orthodontics, Faculty of Dentistry, Adıyaman University. Body weight (BW), body mass index (BMI), and 24-hour retrospective food consumption were recorded at 4 different time points (immediately before installation of the RME appliance [T1] and at the first [T2], fourth [T3], and 12th week of treatment [T4]).</p><p><strong>Results: </strong>The energy, protein, fat, fiber, vitamin A, thiamine, riboflavin, vitamin B6, folate, vitamin E, and vitamin C levels at T1 were significantly higher than those at T2, T3, and T4, whereas the protein, carbohydrate, fiber, vitamin A, thiamine, riboflavin, vitamin B6, folate, vitamin E, and vitamin C levels at T2 were significantly lower than those at T1, T3, and T4 (P <0.05). BW and BMI at T1 were significantly higher than at T2 (mean decrease: BW, -1.71 ± 0.87; BMI, -0.70 ± 0.33) and T3 (mean decrease: BW, -1.09 ± 0.59; BMI, -0.55 ± 0.26; P <0.05).</p><p><strong>Conclusions: </strong>Eating habits may change during RME.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076216","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":"The influence of 3-dimensional printing layer thickness on model accuracy and the perceived fit of thermoformed retainers.","authors":"Tarek Elshebiny, Ian Canepa, F Kurtis Kasper, Ioannis A Tsolakis, Stefanos Matthaios, Juan Martin Palomo","doi":"10.1016/j.ajodo.2024.11.010","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.11.010","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to investigate the accuracy of dental model printing using 2 different layer height settings and how these settings affect the fabrication of thermoformed retainers.</p><p><strong>Methods: </strong>Subjects were recruited from the Department of Orthodontics at Case Western Reserve University and scanned according to specific selection criteria. A total of 30 stereolithography files were produced and used as reference files. The stereolithography files were printed at the recommended layer height of 100 μm and 170 μm with a Sprint Ray Pro 95 3-dimensional (3D) printer (Sprint Ray, Los Angeles, Calif). All printed models were scanned using the same iTero intraoral scanner (Align Technology, San Jose, Calif) as was used for the initial intraoral scan as well. The accuracy of the printed models was based on the evaluation of root mean square values resulting from 3D superimpositions. Afterward, vacuum-formed retainers were fabricated. The vacuum-formed retainers were evaluated by the patient and an American Board of Orthodontics-certified orthodontist.</p><p><strong>Results: </strong>No difference was observed in the maxillary arch (P = 0.85) and the mandibular arch accuracy (P = 0.08) by assessing the root mean square values. No difference was observed in the doctor retainer score of the maxillary retainers (P = 0.37) and the mandibular retainers (P = 0.77). There was no difference in the patient retainer score of the maxillary (P = 0.08) and the mandibular retainers (P = 0.22) when comparing retainers. Conversely, less printing time was observed when printing the models with 170 μm compared with 100 μm (P <0.001).</p><p><strong>Conclusions: </strong>The accuracy of a dental model printed with a Sprint Ray Pro 95 3D printer was not affected by the 100 or 170 μm layer height. Orthodontists and patients did not detect a statistically significant difference in retainer fit.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015517","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":"Finite model analysis of different anchorage sites for bone-supported facemask application in unilateral cleft lip and palate.","authors":"Busra Gokalp Sahin, Bengisu Akarsu-Guven","doi":"10.1016/j.ajodo.2024.11.008","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.11.008","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to evaluate the effects of the miniplate application sites in the maxilla and the applied force vector changes during skeletally supported facemask application in adolescent patients with unilateral cleft lip and palate (UCLP) using finite element model (FEM) analysis.</p><p><strong>Methods: </strong>A FEM was obtained from a cone-beam computed tomography image of a 12-year-old female patient with UCLP. Miniplates were placed on 3 different sites of the maxilla; 500 g of advancement force was applied bilaterally, parallel (0°), and downward (-30°) to the occlusal plane. Von Mises stress and displacement in the nasomaxillary complex were analyzed.</p><p><strong>Results: </strong>Von Mises stress values were higher at 0° force mechanics in the nasomaxillary complex in 3 different miniplate sites. In all scenarios, stresses were higher in zygomaticotemporal, zygomaticofrontal, and pterygopalatine sutures. In the y-axis, the amount of displacement was higher in the 0° force mechanics in all models. Midface advancement and clockwise rotation of the nasomaxillary complex were observed in the -30° force mechanics over mini plates placed on the lateral nasal wall and among the premolars, whereas counterclockwise rotation occurred in all miniplate placement sites with 0° force vector.</p><p><strong>Conclusions: </strong>In patients with skeletal Class III maloclussion with UCLP, anterior placement of miniplates in the maxilla may be a more precise alternative when midface advancement and clockwise rotation of the nasomaxillary complex are desired. This FEM study demonstrated that more anterior placement sites and a 30° force vector is efficacious for maxillary clockwise advancement in UCLP.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967199","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":"Volumetric and tridimensional root resorption and alveolar bone changes in Class II malocclusion extraction protocol treated with clear aligners and fixed orthodontic appliances: A comparative study.","authors":"Ibtehal Almagrami, Abduljabbar Yahya Albarakani, Abeer A Almashraqi, Maged S Alhammadi, Leena Ali Al-Warafi, Maryam Almaqrami, Yiqiang Qiao","doi":"10.1016/j.ajodo.2024.11.012","DOIUrl":"10.1016/j.ajodo.2024.11.012","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to assess the root resorption and alveolar bone changes of maxillary incisors volumetrically and 3-dimensionally in patients with Class II Division 1 malocclusion who underwent treatments involving the extraction of 4 first premolars with conventional fixed appliances (FAs) vs clear aligners (CAs).</p><p><strong>Methods: </strong>A total of 320 maxillary incisors from 80 patients were assessed and divided into 2 groups (FAs and CAs), each possessing similar baseline characteristics. Pretreatment and posttreatment cone-beam computed tomography scans were used to analyze linear and volumetric orthodontically induced inflammatory root resorption, alveolar bone thickness (ABT), alveolar bone height (ABH), as well as anteroposterior and vertical movements of maxillary incisors.</p><p><strong>Results: </strong>Both groups revealed a significant reduction in palatal ABT and an increase in labial ABT in both the central and lateral incisors. The total ABT reduction was more pronounced in the FAs group than in the CAs group (P <0.005). In terms of ABH, FAs treatment resulted in more labial and palatal marginal alveolar bone resorption around the maxillary incisors. The root length and volume losses in the CAs group were significantly less than those in the FAs group: 0.90 ± 0.97 vs 1.85 ± 1.18 mm and 19.59 ± 8.75 vs 24.28 ± 10.05 mm³, respectively. The axial inclination was significantly less in the CAs group than in the FAs group: 8.83 ± 8.73 vs 2.64 ± 12.31°.</p><p><strong>Conclusions: </strong>Treatments of Class II Division 1 malocclusion with FAs and CAs appeared to cause a statistically significant palatal ABT reduction and maxillary incisors root resorptions, with the FAs treatment causing a more significant effect. Both treatment modalities significantly reduced the ABH, with the greatest reduction found on the lateral incisors' palatal side in the FAs group. The CAs treatment resulted in a more significant incisor lingual tipping.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967105","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":"Dentoskeletal effects of molar distalization with miniscrew-anchored cantilever and pendulum appliance for Class II correction.","authors":"Cassio Bernard Alves Campos, Lorena Vilanova, Luiz Eduardo Alessio Junior, Felicia Miranda, Daniela Garib, José Fernando Castanha Henriques","doi":"10.1016/j.ajodo.2024.11.011","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.11.011","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to compare the dental and skeletal changes promoted by the miniscrew-anchored cantilever and pendulum appliance for Class II correction.</p><p><strong>Methods: </strong>This retrospective study involved 52 patients with Class II malocclusion divided into 2 groups according to the treatment received: the miniscrew group (MG) with 23 patients (14 females and 9 males; mean initial age of 12.42 years) treated using the miniscrew-anchored cantilever, and the pendulum group (PG) with 29 patients (21 females and 8 males; mean initial age of 13.60 years) treated using the pendulum appliance. Lateral cephalograms and digital dental models were obtained and analyzed in 2 phases: pretreatment and postdistalization. Intergroup comparisons were performed using t test, Mann-Whitney test, and multivariate analysis of covariance test for covariates (P <0.05).</p><p><strong>Results: </strong>Both groups exhibited similar molar distalization (3.25 ± 1.68 mm for MG and 2.90 ± 2.17 mm for PG). The MG showed distalization of premolars (2.03 ± 2.09 mm) and incisors (1.70 ± 2.27 mm), whereas the PG exhibited mesialization of premolars (3.24 ± 2.01 mm) and incisors (2.30 ± 2.60 mm). A greater distal rotation (20.20° ± 5.73° for MG and 4.26° ± 6.41° for PG; P <0.001) and smaller distal angulation (8.55° ± 3.75° for MG and 14.36° ± 5.67° for PG; P <0.001) of the maxillary first molar was observed in the MG when compared with the PG.</p><p><strong>Conclusions: </strong>Both devices were effective for Class II molar distalization. The miniscrew-anchored cantilever was able to control the side effects of mesialization in the incisors and premolars during distalization when compared with distalization with a pendulum appliance.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967188","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}