American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"Directory: AAO Officers and Organizations","authors":"","doi":"10.1016/S0889-5406(25)00364-6","DOIUrl":"10.1016/S0889-5406(25)00364-6","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"168 4","pages":"Page 518"},"PeriodicalIF":3.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121110","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":"Warts and all","authors":"Laurance Jerrold","doi":"10.1016/j.ajodo.2025.07.005","DOIUrl":"10.1016/j.ajodo.2025.07.005","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"168 4","pages":"Pages 515-516"},"PeriodicalIF":3.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120972","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)00356-7","DOIUrl":"10.1016/S0889-5406(25)00356-7","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"168 4","pages":"Page A8"},"PeriodicalIF":3.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121109","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":"Clear aligner orthodontic treatment: An international modified Delphi consensus study.","authors":"Niki Arveda, Marta Calza, Tommaso Castroflorio, Francesco Garino, Aldo Giancotti, Juan Carlos Varela, Calogero Dolce, Bjorn Ludwig, Paolo Manzo, Ravindra Nanda, Oliverio Teresa, Angela Arreghini, Francesca Cremonini, Davide Mirabella, Filippo Pepe, Chris Laspos, Robert L Boyd, Gina Theodoridis, Carlos Flores Mir, Teresa Pinho, Susana Palma, Jörg Schwarze, Kenji Ojima, Vicki Vlaskalic, Manuel Roman, Ute Schneider Moser, Mauro Cozzani, Mercedes Revenaz, Riccardo Riatti, Gianluigi Fiorillo, Sandra Tai, Andre El Zoghbi, Camilla Molinari, Enzo Pasciuti, Vincenzo D'Anto, Luca Lombardo, Giuseppe Siciliani","doi":"10.1016/j.ajodo.2025.07.012","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.07.012","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to establish a consensus, thanks to the participation of a large group of experts in the field of aligner therapy, on several of its clinical and extraclinical aspects, with particular reference to its potential and biomechanical limitations.</p><p><strong>Methods: </strong>A Delphi study was conducted in 3 rounds. On the basis of the most recent systematic reviews in the literature, the steering committee formulated 35 questions. A group of 36 international experts agreed to participate in the survey and were asked to respond to the questions, choosing their level of agreement on a scale of 1-5 in the first round, then from 1 to 3 in the second, and finally with a yes or no response in the third, progressively narrowing the field of research. The items for which consensus (≥70%) was obtained were accepted; the others were reformulated.</p><p><strong>Results: </strong>On the basis of the analysis of the experts' responses, 68 questions were reformulated for the second round and 28 for the third round. After 3 rounds, the study generated 47 consensus statements regarding biomechanical aspects and extraclinical factors.</p><p><strong>Conclusions: </strong>The study, based on the modified Delphi method, collected the opinion of experts, comparing it with the scientific literature to evaluate the potential and limitations of orthodontic aligners, obtaining 47 consensus statements related to biomechanics and extraclinical factors.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145087720","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":"Effects of maxillary protraction with an orthopedic facemask on fricatives.","authors":"Gokhan Coban, Nisa Gul Amuk, Beyza Nur Dukar, Hatice Feyza Konca, Nizami Hashimli, Taner Ozturk","doi":"10.1016/j.ajodo.2025.07.011","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.07.011","url":null,"abstract":"<p><strong>Introduction: </strong>This prospective cohort study aimed to investigate the effect of rapid maxillary expansion (RME) and orthopedic facemask (FM) treatment on the acoustic properties of fricative sounds (/s/ and /ʃ/) through objective and subjective (perceptual) assessments.</p><p><strong>Methods: </strong>Twenty-two patients (7 females and 15 males; mean age: 11.27 ± 1.38 years) underwent speech recordings at 4 time points: immediately before RME (T0), 2 weeks later (immediately before FM application, T1), 3 months later (T2), and 1 week after treatment (T3). Speech therapists recorded the data and conducted acoustic analyses using Praat software. Acoustic parameters-duration, spectral peak, center of gravity, and second formant transition-were analyzed for /s/ and /ʃ/ in monosyllabic words with /a/, /u/, and /ı/ vowels in both word-initial and word-final positions. Data were statistically analyzed using repeated measures analysis of variance and the Friedman test. Cephalometric radiographs were taken at T0 and T3.</p><p><strong>Results: </strong>After RME and FM therapy, duration decreased significantly in the word-initial positions of /s/ and /ʃ/ (P = 0.002). Spectral peaks decreased significantly in the word-initial and word-final positions during treatment for both /s/ (P <0.001) and /ʃ/ (P = 0.007), returning to baseline by T3. However, a significant overall decrease persisted (P <0.001). Center of gravity also decreased significantly during treatment (P <0.05), whereas second formant transition values did not change. A perceptual evaluation revealed high articulation accuracy (2.00) at T0 for all evaluations, a significant decrease at T2 with increased scores (3.65 for /s/ and /ʃ/ total, 4.00 for overall intelligibility, P <0.001), and a subsequent improvement at T3 (1.33 for all evaluations, P <0.001), with scores significantly lower than at T0 (P <0.001).</p><p><strong>Conclusions: </strong>RME and FM therapy led to favorable structural and phonetic changes. Improvements in acoustic properties and perceptual scores suggest effective adaptation and enhanced articulation after treatment.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145087847","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":"Micro-computed tomography assessment of regional and overall accuracy of thermoformed retainers and intraoral scanners.","authors":"Maria Luna Montes, Mina Atef Zakhary, Santiago F Cobos, Chia-Ling Kuo, Kelin Zhong, Sarah Abu Arqub, Flavio Uribe","doi":"10.1016/j.ajodo.2025.07.014","DOIUrl":"10.1016/j.ajodo.2025.07.014","url":null,"abstract":"<p><strong>Introduction: </strong>This retrospective in vitro study aimed to assess the accuracy of retainers fabricated using Essix (Dentsply Sirona, Charlotte, NC) and Zendura (Zendura Dental, Fremont, Calif), and to compare the accuracy of intraoral scanners iTero (Align Technology, San Jose, Calif) and TRIOS (3Shape, Copenhagen, Denmark). In addition, regional accuracy across different areas of the mandibular arch was analyzed.</p><p><strong>Methods: </strong>A total of 20 standard tessellation language files from postorthodontic treatment mandibular arches (from January 2019 to August 2024) were selected based on specific inclusion criteria. The standard tessellation language files were 3-dimensional printed and scanned using iTero Element 2 and TRIOS 4, then used to fabricate 20 sets of each thermoformed retainer (Zendura and Essix). All models were scanned using micro-computed tomography (Scanco Medical AG, Brüttisellen, Switzerland), serving as the gold standard for accuracy comparisons. Root mean square (RMS) error analysis was used to assess overall and regional accuracy.</p><p><strong>Results: </strong>The RMS error between gold standard and retainers differed significantly overall (P = 0.044), particularly in the anterior (P = 0.030) and premolar (P = 0.017) regions, with greater discrepancies in Zendura retainers. RMS error differences were not significant between intraoral scanners across most regions, except for borderline significance in the anterior region (P = 0.058), in which TRIOS showed larger deviations.</p><p><strong>Conclusions: </strong>Both intraoral scanners demonstrated comparable accuracy. However, Zendura retainers exhibited greater inaccuracies than Essix. Regional analysis showed higher deviations in the molar and lingual regions for scanners and the molar regions for retainers. Importantly, these discrepancies were low and clinically insignificant.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145071075","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 comparison of survival rates using 3 methods of mandibular fixed retainer fabrication: A randomized clinical trial.","authors":"Ama Johal, Kieran Daly, Dylan Murray","doi":"10.1016/j.ajodo.2025.08.005","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.08.005","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this prospective trial was to compare the 2-year survival of bonded mandibular lingual retainers, using 3 different fabrication methods, as well as comparing a range of clinical and patient-centered outcomes.</p><p><strong>Methods: </strong>This was a single-center, prospective, randomized clinical trial based in a specialist orthodontic practice setting between November 2017 and December 2021. A total of 300 participants, aged 14 and 18 years, who had completed a course of comprehensive fixed appliance treatment, were randomly allocated to 1 of 3 mandibular fixed retainer fabrication intervention groups: chairside-fabricated and directly bonded Ortho FlexTech; laboratory-fabricated and indirectly bonded multistranded gold-plated wire; and laboratory-fabricated and directly bonded Blu-Elgiloy wire. The primary outcome measure was the 2-year survival of retainers, and secondary outcomes included the clinical efficiency and effectiveness of the 3 methods, along with patient-reported outcomes. An electronic block randomization program was used along with opaque envelopes to conceal allocation. All data were anonymized and assessed blind, using descriptive statistics, and analyzed to detect between-group differences.</p><p><strong>Results: </strong>There was a significant difference in bonded wire survival between the 3 groups. Survival at 2 years was estimated to be 68% in the multistrand group, and >90% in the other 2 groups. As there was an overall difference in survival between the 3 groups, additional comparisons were made between each pair of groups. The results suggested statistically significant differences between both the Direct Ortho Flex and BlueElgiloy groups with the multistrand group (Bonferroni-adjusted P <0.001). Highly significant (P <0.001) differences were detected in the mean (standard deviation) combined fabrication and clinical time (seconds) between the direct Ortho FlexTech (733 [SD, 122]) and the other 2 indirect methods of multistranded retainer (2948 [SD, 409]) and the Blu-Elgiloy group (2522 [SD, 436]). No significant differences were detected in the alignment of the mandibular anterior teeth, periodontal parameters, or patient-reported outcomes.</p><p><strong>Conclusions: </strong>At 24 months, significant differences were observed in bonded wire survival between the 3 groups. The direct Ortho FlexTech means that combined fabrication and clinical time was 3 times faster than the other 2 indirect methods. No significant differences were detected in the alignment of the mandibular anterior teeth, periodontal parameters, or patient-reported outcomes.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058744","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":"Geometric morphometric analyses of dental arch changes: A 40-year follow-up in patients with initial mild and severe crowding treated with 4 premolar extractions.","authors":"Caroline Martins Gambardela-Tkacz, Gabriela de Domênico Alcaraz Ros, Paula Cotrin, Gabriel Eduardo Bravo Vallejo, Renan Morais Peloso, Tiago Fialho, Daniela Garib, Diego Astúa, Karina Maria Salvatore de Freitas, Marcos Roberto de Freitas","doi":"10.1016/j.ajodo.2025.07.013","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.07.013","url":null,"abstract":"<p><strong>Introduction: </strong>This research aimed to evaluate changes in dental arch shape during orthodontic treatment and long-term follow-up (T3) in patients treated with 4 premolar extractions because of mild to severe initial dental crowding using the geometric morphometric analysis.</p><p><strong>Methods: </strong>The sample consisted of 32 patients treated with 4 premolar extractions divided into 2 groups according to the Little's irregularity index (LII) at pretreatment (T1; mild or severe crowding). Group mild crowding: 15 subjects with an initial LII of ≤6 mm, and mean T1, posttreatment (T2), and T3 ages of 13.52, 16.05, and 55.15 years, respectively. The mean treatment and T3 times were 2.53 and 39.09 years, respectively. Group severe crowding: 17 subjects with an initial LII of >6 mm with mean T1, T2, and T3 ages of 13.43, 15.48, and 54.41 years, respectively. The mean treatment and T3 times were 2.05 and 38.92 years, respectively. The images from the digital dental models at T1, T2, and T3 were analyzed with principal components analysis and canonical variates analysis on shape variables after a generalized procrustes analysis, to examine intragroup and intergroup arch shape changes at T1, T2, and T3.</p><p><strong>Results: </strong>The principal components analysis revealed that the arch shape variations at T1 were related to the displacement of incisors and canines. At T2, the variations were due to the 4-premolar extractions and anterior retraction. The variation after nearly 40 years was related to both the relapse of anteroinferior teeth and the aging of the occlusion. The arch shape changed with treatment and remained acceptable at T3. The canonical variates analysis illustrated that the maxillary and mandibular shape of dental arches were similar for both groups.</p><p><strong>Conclusions: </strong>Dental arch shape was modified during orthodontic treatment and remained relatively stable at T3 in both groups, despite some degree of relapse and maturational changes in the occlusion.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056104","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":"Is the cervical vertebral maturation method a reliable predictor of midpalatal suture maturation? A retrospective study.","authors":"Davide Brilli, Federica Altieri, Martina Mezio, Michele Cassetta","doi":"10.1016/j.ajodo.2025.07.009","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.07.009","url":null,"abstract":"<p><strong>Introduction: </strong>The study aimed to assess the correlations among chronological age, cervical vertebral maturation (CVM), midpalatal suture (MPS) maturation, and MPS density (MPSD), and to evaluate the association between the CVM and MPS.</p><p><strong>Methods: </strong>Records derived from the analysis of lateral cephalometric radiographs and cone-beam computed tomography scans of 200 subjects, grouped by sex, were used to determine CVM, MPS, and MPSD ratio. Statistical analysis included descriptive statistics. Spearman correlation and positive likelihood ratio were used to determine the possible correlations.</p><p><strong>Results: </strong>In males, strong correlations were observed between CVM stage (CS) and age (r = 0.864), CVM and MPS stage (r = 0.826). Moderate correlation was found between CS and MPSD ratio (r = 0.488). Strong correlations were found between MPS stages and age (r = 0.729) and MPSD ratio (r = 0.622). Among females, strong correlations appeared between CVM and age (r = 0.872), between CS and MPS stage (r = 0.899), and between CVM and MPSD ratio (r = 0.618). Further strong correlations were found between MPS stages and age (r = 0.8), and between MPS stages and MPSD (r = 0.716). In both sexes, the positive likelihood ratio test demonstrated strong associations between CS1 and stage A, CS5 and stage D, and CS6 and stage E.</p><p><strong>Conclusions: </strong>Significant correlations exist between chronological age, CVM, MPS, and MPSD. The CVM method demonstrated a high predictive value in identifying stages A, D, and E. The CVM method could be considered as a decision-making indicator in crossbite treatment; however, it should be confirmed by further prospective studies.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042074","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":"Comparison of shear bond strengths of clear aligner attachments to full-contour zirconia crowns with different sandblasting times and primers: An in vitro study.","authors":"Viet Anh Nguyen, Khanh Linh Trinh, Thi Lan Anh Le, Huy Cong Nguyen","doi":"10.1016/j.ajodo.2025.08.007","DOIUrl":"https://doi.org/10.1016/j.ajodo.2025.08.007","url":null,"abstract":"<p><strong>Introduction: </strong>This study investigated the effect of sandblasting time and primer type on the shear bond strength of composite attachments to full-contour zirconia crowns.</p><p><strong>Methods: </strong>A total of 108 zirconia specimens were fabricated and divided into 9 groups (n = 12) according to sandblasting time (10, 30, and 60 seconds) and primer type (silane, 10-methacryloyloxydecyl dihydrogen phosphate [MDP], universal). After sandblasting with 110-μm alumina particles, specimens were primed, and attachments were bonded using a packable composite. Surface roughness was measured, and scanning electron microscopy analysis was performed on an additional 36 specimens. Specimens underwent thermocycling before shear bond strength testing. Failure modes were assessed using a digital microscope and categorized based on the Adhesive Remnant Index (ARI) as adhesive, cohesive, or mixed. Data analyses were conducted using 2-way analysis of variance and chi-square tests.</p><p><strong>Results: </strong>Surface roughness and microirregularities peaked at 30 seconds. Both sandblasting time and primer type significantly influenced the shear bond strength (P <0.001). MDP and universal primers consistently outperformed silane. Optimal bond strength varied with primer type and sandblasting time: 30 seconds with MDP yielded 12.02 MPa, whereas 60 seconds with universal primer reached 14.56 MPa. Silane resulted in predominantly adhesive failures (ARI, 0). Mixed failures (ARI, 1) were more common with MDP and universal primers, particularly at 60 seconds of sandblasting with the universal primer.</p><p><strong>Conclusions: </strong>This study highlights the importance of sandblasting duration and primer selection in optimizing bond strength to zirconia. Both MDP and universal primers achieved clinically acceptable bond strength, with their performance influenced by sandblasting time.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145031182","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}