American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"A retrospective study of planned and achieved rotational changes of maxillary canines with clear aligner therapy.","authors":"Hannah Chong, Tony Weir, Maurice J Meade","doi":"10.1016/j.ajodo.2026.05.016","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.05.016","url":null,"abstract":"<p><strong>Introduction: </strong>This retrospective study aimed to assess the accuracy of planned moderate-to-severe rotation changes (≥5°) of maxillary canines with the Invisalign (Align Technology, Tempe, Ariz) appliance. The secondary aim was to evaluate the influence of the planned rotation direction on the accuracy.</p><p><strong>Methods: </strong>Digital models representing the initial malocclusion, the planned occlusions, and the achieved occlusions after the wear of an initial series of Invisalign aligners by adult patients were measured using metrology software. A method to define rotation directions was formulated. The sample was then divided into 5 categories by rotation type: mesial-in, mesial-out, distal-in, distal-out, and combination rotations. This categorization enabled subsequent analyses to determine whether the planned rotation directions were met and whether rotation direction influenced accuracy.</p><p><strong>Results: </strong>A total of 114 maxillary canines from 75 patients satisfied the inclusion criteria. Overall, the mean accuracy of the planned rotation was 64%. Rotation direction had no statistically significant influence on the accuracy of the planned rotations. Planned rotation directions were achieved in 77% of the maxillary canines evaluated. Combination rotations demonstrated the greatest variability, with 51% rotating in a direction other than that planned. A 1° increase in rotational velocity per aligner correlated with a 5.35° shortfall in the accuracy of this rotation (P < 0.05).</p><p><strong>Conclusions: </strong>The achieved rotation of maxillary canines after the wear of an initial series of Invisalign aligners differed from the planned movements in both magnitude and direction for planned rotations of ≥5°. A method for classifying rotation types was developed, which may facilitate further research to guide clinicians and optimize treatment outcomes.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148820190","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":"Evaluation of molar to WALA ridge distance and its relationship with vertical facial type in untreated subjects with normal occlusion.","authors":"Jaime Guberman, Chenshuang Li, Leandra Garcia Jorge, Normand Boucher, Todd Welsh, Chun-Hsi Chung","doi":"10.1016/j.ajodo.2026.06.021","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.06.021","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to evaluate the relationship between mandibular first molar inclination, Andrews' WALA-facial axis (FA) distance, and vertical skeletal pattern in adolescent and adult samples using cone-beam computed tomography and 3-dimensional intraoral scan data.</p><p><strong>Methods: </strong>Cone-beam computed tomography and 3-dimensional model data from untreated adolescents (n = 20; mean age, 15.32 years) and adults (n = 50; mean age, 41.13 years) with near-normal occlusion were analyzed. Measurements included WALA-FA distance, buccolingual inclination of the mandibular first molars, and the Frankfort-mandibular plane angle. Statistical tests included t tests and correlation analyses.</p><p><strong>Results: </strong>Adolescents had a significantly greater mean WALA-FA distance (2.85 mm) than adults (2.28 mm; P <0.0001). A significant positive correlation existed between molar inclination and WALA-FA distance in both groups. In adolescents only, a significant negative correlation was found between molar inclination and the Frankfort-mandibular plane angle. Molar inclination (approximately 15° lingual) did not differ significantly between the groups.</p><p><strong>Conclusions: </strong>In subjects with normal occlusion, WALA-FA distances for the mandibular first molars are not constant; adults have smaller WALA-FA distances than adolescents, and mandibular first molars have a lingual inclination of approximately 15° in both adults and adolescents. Clinicians should consider the natural buccolingual inclination of the teeth and alveolar bone and apply individualized WALA-FA guidelines to support long-term stability and function.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148800589","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 predictability of clear aligner treatment in space opening for permanent maxillary lateral incisors: An observational retrospective cohort study.","authors":"Maurice J Meade, Yannii Pouferis, Tony Weir","doi":"10.1016/j.ajodo.2026.06.016","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.06.016","url":null,"abstract":"<p><strong>Introduction: </strong>Space opening with clear aligner therapy has been little researched. The aim of this retrospective observational study was to investigate the predictability of the Invisalign appliance (Align Technology, San José, Calif) in opening space for the permanent maxillary lateral incisor (PMLI).</p><p><strong>Methods: </strong>Data from Align Technology's digital treatment planning software system, ClinCheck (Align Technology, San Jose, Calif), were evaluated to determine the initial, predicted, and achieved space opening for the PMLI in patients satisfying the selection criteria. Acquisition of the relevant measurement values was performed using the Geomagic (3D Systems, Rock Hill, SC) metrology system. A mixed-effects model was used to account for within-patient dependence among tooth spaces and the 2 one-sided tests for equivalence testing and Bland-Altman analysis were employed.</p><p><strong>Results: </strong>Space opening for 41 PMLIs in 25 patients with a mean age of 21.2 ± 13.0 years was evaluated. Approximately 65.2%-69.8% of predicted space opening was achieved, with the mean differences between predicted and achieved values ranging from 0.9 ± 1.0 mm to 1.4 ± 1.2 mm (P <0.05). For patients <18 years of age, the mean difference between predicted and achieved canine angulation changes was 9.4 ± 9.1°, with 95% limits of agreement from -8.4° to +27.2° (P = 0.015). Mean differences between predicted and achieved canine angulation changes in patients ≥18 years of age (5.3 ± 6.4°) and central incisor angulation changes in patients <18 years of age (-0.1 ± 8.0°) and ≥18 years of age (-4.8 ± 7.6°) were not statistically significant.</p><p><strong>Conclusions: </strong>The findings can help clinicians better understand the planning of space opening for PMLIs before clear aligner therapy commences and provide baseline information for future research.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148800592","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":"Mixed-longitudinal maxillomandibular growth changes across skeletal maturation stages in pediatric patients with skeletal Class I malocclusion.","authors":"Hankyul Kim, Yoon Jeong Choi, Jae Hyun Park, Harim Kim, Ji-Hyun Lee, Chooryung J Chung, Kyung-Ho Kim","doi":"10.1016/j.ajodo.2026.06.015","DOIUrl":"10.1016/j.ajodo.2026.06.015","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to analyze the maxillomandibular growth patterns in pediatric patients with skeletal Class I malocclusion using longitudinal data classified according to skeletal maturity indicators (SMI).</p><p><strong>Methods: </strong>The study included 21 boys and 23 girls with skeletal Class I malocclusion who had serial hand-wrist and lateral cephalometric radiographs from SMI stages 1-11 (at approximately 6-month intervals, mixed-longitudinal). Growth completion, residual growth, and growth velocity of the maxilla and mandible were evaluated. A linear mixed model was used to assess stage-to-stage changes across the SMI stages.</p><p><strong>Results: </strong>In boys, maxillary growth completion increased until SMI 5, whereas no significant increase was observed in girls. Mandibular growth completion increased significantly at nearly all SMI stages in both sexes, with growth velocity peaking near SMI 5. Residual mandibular growth at SMI 1 was 4-5 times greater than residual maxillary growth. The growth completion of the ramus increased significantly during SMI 6-7 and 10-11 in boys and during SMI 7-8 and 10-11 in girls. Posterior facial height increased more than anterior facial height in both sexes, with continued growth observed beyond SMI 10.</p><p><strong>Conclusions: </strong>Maxillary growth occurred primarily during the early skeletal stages, whereas mandibular growth peaked around puberty and continued afterward, especially in ramus height. The continued increase in posterior facial height during later stages may influence mandibular rotation. These growth patterns emphasize the importance of timely treatment and careful posttreatment monitoring.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148800555","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":"A multivariable model for treatment duration in nonextraction clear aligner therapy.","authors":"Tuğba Haliloğlu Özkan, Elif Nadide Akay Polat","doi":"10.1016/j.ajodo.2026.08.003","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.08.003","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to evaluate the associations between pretreatment dentoalveolar characteristics and treatment duration in nonextraction clear aligner therapy (CAT).</p><p><strong>Methods: </strong>This retrospective cohort study included 296 patients treated with nonextraction CAT. Pretreatment variables were extracted from Invisalign ClinCheck (Align Technology, Santa Clara, Calif) digital treatment planning software and included deviations in overjet and overbite from a 3 mm reference, arch irregularities, midline deviation, and posterior crossbite. Treatment duration was defined as the time from initial aligner delivery to the completion of all refinement stages. Multivariable linear regression analysis was performed to evaluate the associations between pretreatment characteristics and treatment duration. Internal validation was performed using bootstrap resampling (5000 iterations).</p><p><strong>Results: </strong>The 11 pretreatment variables collectively explained 32.8% of the variability in treatment duration (R² = 0.328; adjusted R² = 0.302). Overbite showed the strongest association with treatment duration, followed by mandibular crowding, midline deviation, and posterior crossbite (P <0.001). Each 1 mm increase in overbite and overjet was associated with increases of approximately 41 and 15 days in treatment duration, respectively. The presence of posterior crossbite was associated with an approximately 89-day increase. Bootstrap analysis demonstrated the stability of the regression estimates.</p><p><strong>Conclusions: </strong>Pretreatment dentoalveolar characteristics were significantly associated with treatment duration in nonextraction CAT. Although several baseline characteristics independently contributed to treatment duration, the model explained approximately one-third of its variability, highlighting the influence of biological, behavioral, and treatment-related factors beyond pretreatment records.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148800607","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":"Deep learning-assisted cone-beam computed tomography volumetric assessment of mandibular anterior alveolar bone changes with and without periodontally accelerated osteogenic orthodontics during skeletal Class III orthodontic-orthognathic treatment.","authors":"Mengqiao Pan, Runzhi Guo, Huifang Yang, Jian Liu, Li Xu, Jianxia Hou","doi":"10.1016/j.ajodo.2026.06.012","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.06.012","url":null,"abstract":"<p><strong>Introduction: </strong>Patients with skeletal Class III malocclusion often have thin anterior alveolar bone and an increased periodontal risk. This study evaluated 3-dimensional (3D) alveolar bone volume changes in patients treated with or without periodontally accelerated osteogenic orthodontics (PAOO) using a deep learning-assisted cone-beam computed tomography (CBCT) approach.</p><p><strong>Methods: </strong>A total of 42 adults undergoing orthodontic-orthognathic treatment were divided into a PAOO group (group S, n = 21) and a matched non-PAOO control group (group NS, n = 21). CBCT scans were obtained at baseline (T1) and posttreatment (T3), with a 6-month post-PAOO scan (T2) for group S. Labial, lingual, and total alveolar bone volumes were quantified using a deep learning-assisted automated segmentation tool. Linear mixed-effects models were used to analyze longitudinal changes and treatment effects, adjusting for baseline root length.</p><p><strong>Results: </strong>In group S, labial alveolar bone volume increased from T1 (42.94 ± 23.15 mm³) to T3 (84.15 ± 36.82 mm³; P <0.001), contributing to an increase in total alveolar bone volume (139.92 ± 86.42 mm³ at T3 vs 114.20 ± 66.86 mm³ at T1; P <0.001). Group NS showed no change in labial bone volume (P = 0.846) but a reduction in total bone volume at T3 (93.76 ± 67.24 mm³; P <0.001), primarily driven by lingual loss. Group S had greater labial and total alveolar bone volumes than group NS at T3 (P <0.001).</p><p><strong>Conclusions: </strong>PAOO was associated with increased and maintained labial alveolar bone volume, which may help preserve total alveolar support during combined treatment. Deep learning-assisted CBCT segmentation can serve as an efficient volumetric evaluation tool.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148760222","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":"A comparative study of mandibular changes induced by rapid maxillary expansion vs sagittal-guided Twin-block therapy during the mixed dentition period.","authors":"Ruifang Jiang, Jingcheng Chen, Weiying Zheng, Xiangyu Li, Yanan Chen, Xi Zhang","doi":"10.1016/j.ajodo.2026.06.018","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.06.018","url":null,"abstract":"<p><strong>Introduction: </strong>It is generally accepted that the optimal timing for functional orthodontic treatment in patients with Class II malocclusion and mandibular retrusion is during the circumpubertal growth period (cervical vertebral maturation stage [CS] 3-CS4). However, these patients often present with excessive overjet and a retrusive facial profile, which compromises esthetics and increases the risk of dental trauma. Early intervention during the mixed dentition period may reduce the risk of dental trauma and help safeguard children's psychological well-being. This study aimed to evaluate the therapeutic effects of rapid maxillary expansion (RME) and a modified Twin-block appliance-sagittal-guidance Twin-block (SGTB)-in mixed dentition patients and to compare the outcomes with an untreated Class II malocclusion control group.</p><p><strong>Methods: </strong>After matching cervical vertebral maturation stages and observation/treatment durations, 3 groups-RME, SGTB, and untreated controls-were compared. Linear and angular cephalometric variables related to mandibular morphology were analyzed. All variables followed a normal distribution. In addition, one-way analysis of variance was performed, followed by Tukey's post-hoc tests.</p><p><strong>Results: </strong>One-way analysis of variance of treatment-induced changes (T2 to T1) revealed statistically significant intergroup differences in vertical parameters, including FMA, posterior facial height (PFH), lower anterior facial height (LAFH), PFH/LAFH ratio, and mandibular ramus length, and sagittal parameters, including NSGn, total mandibular length (Co-Gn), and gonial angle. Tukey's post-hoc analysis revealed no statistically significant differences between the RME and control groups across all evaluated variables. In contrast, the SGTB group exhibited significant changes in vertical measurements (FMA, PFH, LAFH, and mandibular ramus length) and sagittal measurements (NSGn, Steiner analysis, Co-Gn, and Go-Gn) compared with controls. Annualized growth analysis demonstrated an additional Co-Gn increase of 4.53 mm/y in the SGTB group compared with the untreated controls.</p><p><strong>Conclusions: </strong>In mixed-dentition patients with Class II malocclusion and mandibular retrusion, RME alone does not significantly stimulate mandibular growth in the short term; its long-term effects require further investigation. SGTB significantly increased Co-Gn compared with the control group, primarily through enhanced vertical growth. However, given its limited vertical control, careful case selection is essential.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148708421","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":"Success rate and complications of Bollard-modified miniplates for bone-anchored maxillary protraction in growing patients: A single-surgeon retrospective cohort study.","authors":"Lieselotte De Bruyn, Veronica Scocca, Araceli Diez-Fraile, Gwen R J Swennen","doi":"10.1016/j.ajodo.2026.06.017","DOIUrl":"https://doi.org/10.1016/j.ajodo.2026.06.017","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to evaluate the success rate, stability, and complications of Bollard-modified miniplate anchorage for bone-anchored maxillary protraction (BAMP) in a large cohort of growing patients treated by a single surgeon with long-term follow-up.</p><p><strong>Methods: </strong>This retrospective cohort study included 299 growing patients with maxillary hypoplasia and Class III malocclusion who underwent Bollard-modified miniplate placement for BAMP between January 2007 and December 2019. A total of 1196 miniplates were placed. The mean follow-up duration was 4.2 years. Outcomes were assessed at both the miniplate level and the patient level. Patient-level logistic regression analysis was performed to evaluate the association of age at surgery and sex with adverse events.</p><p><strong>Results: </strong>The overall success rate of Bollard-modified miniplate anchorage was 96.5%. During orthodontic loading, 50 miniplates (4.2%) developed mobility or inflammation; after conservative management, 18 regained stability, 24 were removed and successfully replaced, and 8 were removed and not replaced. Complications were more frequent in the maxilla than in the mandible (odds ratio [OR], 3.09; 95% confidence interval [CI], 1.70-5.61; P <0.001). Younger age at surgery was independently associated with a higher likelihood of complications (OR, 0.70; 95% CI, 0.51-0.96; P = 0.025), miniplate removal (OR, 0.68; 95% CI, 0.48-0.98; P = 0.036), and miniplate replacement (OR, 0.62; 95% CI, 0.42-0.92; P = 0.018). Sex was not significantly associated with any of these outcomes.</p><p><strong>Conclusions: </strong>Bollard-modified miniplate anchorage for BAMP showed high long-term success and low complication rates in growing patients. Complications were more frequent in the maxilla than in the mandible, and younger age was associated with a higher likelihood of adverse events. These findings support the use of Bollard-modified miniplates as a reliable skeletal anchorage system for BAMP in children and adolescents.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698490","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":"Corticotomy-assisted rapid maxillary expansion and maxillary protraction therapy in late adolescence: Evaluation of 3-dimensional stereophotogrammetric soft-tissue, cephalometric, and 2-dimensional airway changes: A prospective controlled clinical trial.","authors":"Gökhan Çoban, Yusuf Nuri Kaba, Taner Öztürk, Nizami Hashimli, Ebru Topçuoğlu Hashimli, Gökhan Türker, Saniye Merve Cengiz, Ahmet Emin Demirbaş","doi":"10.1016/j.ajodo.2026.05.014","DOIUrl":"10.1016/j.ajodo.2026.05.014","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to assess the short-term 3-dimensional (3D) stereophotogrammetric soft-tissue, cephalometric, and airway effects of corticotomy-assisted rapid maxillary expansion (RME) and facemask (FM) therapy in late-adolescent patients with Class III malocclusion.</p><p><strong>Methods: </strong>This prospective controlled clinical trial included 16 late-adolescent patients with Class III malocclusion (mean age, 14.90 ± 0.64 years) treated with corticotomy-assisted RME and Petit-type FM therapy and 16 untreated Class III controls (mean age, 14.03 ± 0.90 years). Lateral cephalograms and 3D stereophotogrammetric records were obtained at pretreatment and posttretment or at corresponding time points during the observation period. Paired t tests or Wilcoxon signed rank tests were used for within-group comparisons, and independent t tests or Mann-Whitney U tests were used for between-group comparisons (P <0.05).</p><p><strong>Results: </strong>In the corticotomy group, SNA (2.36°), A-Na perp (2.67 mm), ANB (4.08°), SN-GoGn (3.41°), and overjet (5.97 mm) increased, whereas SNB (-1.71°), Pg-Na perp (-2.61 mm), and IMPA (-4.32°) decreased. A 3D soft-tissue analysis revealed increases in ANB angle (2.50°), maxillary length (1.16 mm), mandibular height (2.94 mm), and nasal ala and alar base width (1.57 and 1.97 mm), whereas mandibular corpus length (-2.58 mm), facial convexity (-4.84°), and bigonial width (-3.94 mm) decreased. After treatment, bilateral Al showed lateral displacement along the horizontal (x) axis, whereas bilateral alare curvature and subnasale showed anterior displacement along the sagittal (z) axis, with nonsignificant 2.5 mm between-group difference observed at Pg. An approximately 1-mm increase in nasopharyngeal airway length was observed, but no significant between-group differences were found.</p><p><strong>Conclusions: </strong>Despite reduced growth potential, corticotomy-assisted RME and FM therapy produced measurable short-term skeletal and 3D soft-tissue improvements in patients with true skeletal Class III malocclusion in late adolescence and may serve as an intermediate adjunctive option; however, long-term stability and randomized comparative data are required.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148671281","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":"Changing of the guard","authors":"Peter M. Greco","doi":"10.1016/j.ajodo.2026.05.001","DOIUrl":"10.1016/j.ajodo.2026.05.001","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"170 2","pages":"Pages 147-148"},"PeriodicalIF":4.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148686165","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}