American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"The American Board of Orthodontics: Written examination development, modification, and preparation recommendations","authors":"Jae Hyun Park,&nbsp;Roberto Hernandez-Orsini,&nbsp;Paul Emile Rossouw,&nbsp;Anthony M. Puntillo,&nbsp;Daniel J. Rejman,&nbsp;Meenakshi Vishwanath,&nbsp;Onur Kadioglu,&nbsp;Timothy Tremont,&nbsp;Timothy S. Trulove","doi":"10.1016/j.ajodo.2025.02.008","DOIUrl":"10.1016/j.ajodo.2025.02.008","url":null,"abstract":"<div><div>This article outlines the process of developing a written examination by the American Board of Orthodontics (ABO). It is a 240-question comprehensive examination that assesses the examinee’s knowledge of basic sciences and clinical concepts based on criterion-referenced testing. Examinees’ skills and knowledge are measured against the set of information represented by each test item. In addition, the ABO now offers both virtual and live presentations through “The Pathway Program” to further support examination preparation. For more information, please visit the ABO’s official Website at <span><span>AmericanBoardOrtho.com</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 508-514"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143722574","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(25)00135-0","DOIUrl":"10.1016/S0889-5406(25)00135-0","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Page A8"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948060","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":"May 2025","authors":"Dr Allen H. Moffitt (CE Editor)","doi":"10.1016/j.ajodo.2025.03.003","DOIUrl":"10.1016/j.ajodo.2025.03.003","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 621.e1-621.e2"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948913","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 ,&nbsp;Abduljabbar Yahya Albarakani ,&nbsp;Abeer A. Almashraqi ,&nbsp;Maged S. Alhammadi ,&nbsp;Leena Ali Al-Warafi ,&nbsp;Maryam Almaqrami ,&nbsp;Yiqiang Qiao","doi":"10.1016/j.ajodo.2024.11.012","DOIUrl":"10.1016/j.ajodo.2024.11.012","url":null,"abstract":"<div><h3>Introduction</h3><div>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).</div></div><div><h3>Methods</h3><div>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.</div></div><div><h3>Results</h3><div>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 (<em>P</em> &lt;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°.</div></div><div><h3>Conclusions</h3><div>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.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 539-549"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","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":"Optimal anteroposterior position of the maxillary central incisors and its relationship to the forehead in adult Asian males","authors":"Maria Doughan ,&nbsp;Jessica Kocan Itani ,&nbsp;Timothy Tremont ,&nbsp;Dina Stappert","doi":"10.1016/j.ajodo.2024.12.008","DOIUrl":"10.1016/j.ajodo.2024.12.008","url":null,"abstract":"<div><h3>Introduction</h3><div>The objective of this study was to determine the optimal anteroposterior (AP) position of the maxillary central incisors (CIs) and its relationship with the forehead in adult Asian males.</div></div><div><h3>Methods</h3><div>Smiling profile photographs of 60 Asian males were obtained and divided into 3 groups based on the judged AP position of CI (just about right, too far forward, and too far back), as evaluated by orthodontists and laypersons. The CI position and forehead inclination (FI) were measured relative to the glabella vertical (GV). Statistical analysis was used to test for differences among groups, differences between orthodontists and laypersons, and the relationship between CI position and FI.</div></div><div><h3>Results</h3><div>The optimal CI position was 0.86 mm anterior to GV. There were statistical differences between orthodontists and laypersons in the too-far-forward (<em>P</em> = 0.0001) and too-far-back (<em>P</em> = 0.0001) groups. One-way analysis of variance revealed significant differences among the 3 groups (<em>P</em> &lt;0.001) for both orthodontists and laypersons, with post hoc analysis confirming that all groups differed significantly from one another (<em>P</em> &lt;0.05). CI position and FI showed a moderate positive correlation (<em>r</em> = 0.42; <em>P</em> &lt;0.001).</div></div><div><h3>Conclusions</h3><div>In Asian males, the AP position of the CI can be evaluated relative to the forehead to optimize the CI position and maximize facial harmony.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 604-610"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143383964","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":"Comparative analysis of root resorption and alveolar remodeling in maxillary incisors during orthodontic-orthognathic surgical treatment of skeletal Class III malocclusion","authors":"Xiaoya He,&nbsp;Xingyu Zhou,&nbsp;Ya Cui,&nbsp;Xiaojing Li,&nbsp;Yucong Zhou,&nbsp;Yunhui Xia,&nbsp;Min Zhu,&nbsp;Jiaqiang Liu,&nbsp;Lixia Mao","doi":"10.1016/j.ajodo.2024.12.007","DOIUrl":"10.1016/j.ajodo.2024.12.007","url":null,"abstract":"<div><h3>Introduction</h3><div>This retrospective clinical study investigated root length and periodontal changes around maxillary incisors in patients with Class III skeletal malocclusion treated with fixed appliances (FAs) and clear aligners (CAs) by cone-beam computed tomography.</div></div><div><h3>Methods</h3><div>A total of 60 patients were equally divided into 2 groups based on the appliance type; cone-beam computed tomography scans were obtained before treatment, after presurgical orthodontic treatment, and after orthodontic-orthognathic treatment. The measurements of root length, vertical alveolar bone level, and horizontal alveolar bone thickness at 4 levels (3, 6, and 9 mm from the cementoenamel junction and root apex level) surrounding the maxillary incisors were compared. The tooth movement of maxillary incisors during the presurgical phase was evaluated.</div></div><div><h3>Results</h3><div>The root length of maxillary incisors decreased in both groups, with the CA group experiencing a small reduction (1.09 ± 0.70 mm) compared with the FA group (1.29 ± 0.73 mm) after treatment. The FA group showed more pronounced reductions in palatal alveolar bone thickness and vertical alveolar bone level, along with greater root lingual movement during the presurgical orthodontic phase. Postsurgically, although both groups saw an increase in labial incisor inclination, the FA group primarily exhibited root lingual movement, as opposed to the labial tipping movement observed in the CA group.</div></div><div><h3>Conclusions</h3><div>The results indicated that FAs and CAs could trigger root resorption and marginal alveolar bone loss, with FA treatment associated with a more pronounced impact. Although CA may offer advantages in minimizing root resorption and conserving alveolar bone integrity, it provides inferior control over anterior torque compared with FA. Careful consideration is crucial to prevent iatrogenic degeneration during the whole phase of orthodontic-orthognathic surgical treatment.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 591-603.e6"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143411432","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":"Application of a novel form of structural classification of the pterygopalatine suture for predicting midpalatal suture expansion by miniscrew-assisted rapid palatal expansion in adults: A cohort study","authors":"Wenyi Zhang ,&nbsp;Miri Chung ,&nbsp;Yifeng Qian ,&nbsp;Yanfei Zhu ,&nbsp;Lingyong Jiang","doi":"10.1016/j.ajodo.2024.12.006","DOIUrl":"10.1016/j.ajodo.2024.12.006","url":null,"abstract":"<div><h3>Introduction</h3><div>This study proposes a novel structural parameter, the insertion depth of the pyramidal process into the pterygoid notch (IDP), as a measure of pterygopalatine suture (PPS) resistance during palatal expansion and aims to evaluate the correlation between the IDP-based PPS classification and midpalatal suture (MPS) expansion.</div></div><div><h3>Methods</h3><div>Preexpansion and postexpansion cone-beam computed tomography images of 23 adults treated with miniscrew-assisted rapid palatal expansion were superimposed. After superimposition, the IDP, sagittal position of the expander, bone thickness penetrated by the miniscrews, PPS separation status (PPS_sep), and MPS expansion at the anterior and posterior nasal spines (hemi-AME and hemi-PME) were determined. To analyze the plausibility of PPS_sep as a mediating variable, regressions were performed to confirm the correlation between PPS_sep and both MPS expansion and IDP. The optimal cut-off point of the IDP for predicting PPS_sep (OC_IDP) was obtained when Youden’s index reached a maximum. Finally, the correlation between the OC_IDP-based PPS classification and the MPS expansion was analyzed using linear regression.</div></div><div><h3>Results</h3><div>Both hemi-AME and hemi-PME increased significantly with PPS separation (regression coefficient [b] = 0.88 and 1.25, respectively; <em>P</em> &lt;0.01). IDP was negatively correlated with the probability of PPS separation (<em>P</em> &lt;0.01), and the OC_IDP was 1.90 mm (area under the curve = 0.901). The OC_IDP-based PPS classification showed significant correlations with both hemi-AME and hemi-PME (b = −0.59 and −0.87, respectively; <em>P</em> &lt;0.05).</div></div><div><h3>Conclusions</h3><div>PPS separation promotes skeletal expansion. The greater the IDP, the lower the probability of PPS separation. OC_IDP-based PPS classification is an effective predictor of MPS expansion in miniscrew-assisted rapid palatal expansion-treated adults.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 578-590"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143476547","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":"Competitive or Cooperative?","authors":"","doi":"10.1016/j.ajodo.2025.01.007","DOIUrl":"10.1016/j.ajodo.2025.01.007","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Page 507"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948910","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":"Flexible and rigid guidance in skeletally-anchored maxillary molar distalization: The miniscrew-supported pendulum vs the Beneslider","authors":"Poyraz Bulut ,&nbsp;Nilüfer İrem Tunçer","doi":"10.1016/j.ajodo.2024.11.015","DOIUrl":"10.1016/j.ajodo.2024.11.015","url":null,"abstract":"<div><h3>Introduction</h3><div>This study aimed to demonstrate the effects of flexible and rigid appliance designs on maxillary molar distalization.</div></div><div><h3>Methods</h3><div>Thirty-six patients with bilateral Class II molar relationships and fully erupted maxillary second molars were included in this study. Half of the patients were treated with the miniscrew-supported pendulum appliance (group 1; aged 16.5 ± 2.1 years) and the other half with the Beneslider appliance (group 2; aged 15.6 ± 1.5 years). Lateral cephalometric radiographs and digital dental models were used to study the dentoalveolar and skeletal changes.</div></div><div><h3>Results</h3><div>Distalization time was significantly shorter in group 1 (<em>P</em> = 0.006); however, the first molars in this group displayed considerably more distal tipping (<em>P</em> = 0.030), with lower distalization values (<em>P</em> = 0.022) and rates measured at the crown (<em>P</em> = 0.248), trifurcation (<em>P</em> = 0.410), and root apex levels (<em>P</em> = 0.048). Distalization at the apex level occured only in the Beneslider group, with a root-to-crown distalization ratio of 33.5%. SNB angle decreased (<em>P</em> = 0.010), and ANB (<em>P</em> = 0.010) and SN-GoGn angles (<em>P</em> = 0.010) increased significantly in group 1, all of which were negligible in group 2. Distobuccal rotation of the first molars was significantly higher in group 1 (<em>P</em> = 0.004). The amount of distalization, distal tipping of the maxillary second molars, and appliance success rates were comparable between the groups.</div></div><div><h3>Conclusions</h3><div>The Beneslider appliance provided faster maxillary molar distalization with substantially less distal tipping and distobuccal rotation. In contrast, the miniscrew-supported pendulum appliance led to the posterior rotation of the mandible, worsened the sagittal and vertical parameters, and failed to provide distalization at the apex. In summary, our findings indicated that a rigid design for maxillary molar distalization yields more favorable outcomes.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 559-567"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143426607","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 nutrition changes during rapid maxillary expansion in adolescents","authors":"Mustafa Caferoğlu,&nbsp;Mehmet Ali Yavan,&nbsp;Nihal Hamamcı","doi":"10.1016/j.ajodo.2024.11.013","DOIUrl":"10.1016/j.ajodo.2024.11.013","url":null,"abstract":"<div><h3>Introduction</h3><div>This study aimed to evaluate the nutritional changes in adolescents undergoing bonded rapid maxillary expansion (RME).</div></div><div><h3>Methods</h3><div>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]).</div></div><div><h3>Results</h3><div>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 (<em>P</em> &lt;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; <em>P</em> &lt;0.05).</div></div><div><h3>Conclusions</h3><div>Eating habits may change during RME.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"167 5","pages":"Pages 550-558.e2"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","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}