International Orthodontics最新文献

{"title":"A finite element analysis of stress distribution on maxillofacial skeleton and temporomandibular joint articular disc under intermaxillary loading after simulated bone anchored maxillary protraction","authors":"Supratim Kundu ,&nbsp;Ankur Gupta ,&nbsp;Pravin Kumar ,&nbsp;Anjana Rajagopalan ,&nbsp;Navleen Kaur Bhatia ,&nbsp;Rinkle Sardana ,&nbsp;Vinay Kumar Chugh","doi":"10.1016/j.ortho.2025.101139","DOIUrl":"10.1016/j.ortho.2025.101139","url":null,"abstract":"<div><h3>Introduction</h3><div>Bone-anchored maxillary protraction (BAMP) is an effective therapeutic approach for managing developing skeletal Class III malocclusion. This study aimed to determine the stress distribution in the circum-maxillary sutures, temporomandibular articular disc and mandibular condyle, as well as the displacement of key craniofacial landmarks during BAMP.</div></div><div><h3>Methods</h3><div>A three-dimensional linear finite element (FE) model of the skull, articular disc and anchor plate was developed. Using this model, Class III intermaxillary loads of 150<!--> <!-->g, 250<!--> <!-->g and 400<!--> <!-->g were applied through anchorage plates at angulations of 10°, 20° and 30°. Stress distribution in the circum-maxillary sutures, articular disc and condylar head was evaluated. Additionally, displacement of the anterior nasal spine (ANS), posterior nasal spine (PNS), pogonion and condylion in the anteroposterior and vertical directions was assessed.</div></div><div><h3>Results</h3><div>Increasing force magnitude and angulation resulted in greater maxillary displacement and elevated stresses at circummaxillary sutures. Von Mises and principal stress analyses demonstrated that moderate forces (150–250<!--> <!-->g) produced favourable displacement with comparatively lower stress concentrations in the TMJ region, whereas higher forces (400<!--> <!-->g) generated increased stresses at the condylar head and articular disc.</div></div><div><h3>Conclusion</h3><div>Within the limitations of a linear static model, moderate force levels and smaller angulations appear to offer a biomechanically favourable balance between skeletal advancement and TMJ loading during BAMP therapy. These findings represent immediate mechanical responses and should be interpreted cautiously. Future studies incorporating muscle forces, soft tissues, and time-dependent remodelling are warranted.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101139"},"PeriodicalIF":1.9,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of biocorrosion by sulfate-reducing bacteria in extra-alveolar mini-implants installed in ex vivo human mandibles and exposed to the oral consortium of Desulfovibrio fairfieldensis: Microbiological, morphological, and mass loss analysis","authors":"Camilla Andrade de Souza Nascimento Romão ,&nbsp;Caren Leite Spindola Vilela ,&nbsp;Andrea Fagundes Campello ,&nbsp;Walter Barreiro Cravo Junior ,&nbsp;Fabiano Luiz Heggendorn","doi":"10.1016/j.ortho.2025.101135","DOIUrl":"10.1016/j.ortho.2025.101135","url":null,"abstract":"<div><h3>Aim</h3><div>This study aimed to characterize the biocorrosive capacity of <em>Desulfovibrio fairfieldensis</em> oral in a consortium on the surface of Extra-alveolar mini-implants (EAMI) implanted in <em>ex vivo</em> human mandibles.</div></div><div><h3>Material and methods</h3><div>Nine extra-alveolar mini-implants (EAMI) were installed in <em>ex vivo</em> human mandibles. The EAMI were subjected to biocorrosion testing, immersed in artificial saliva, with an inoculum of <em>D. fairfieldensis</em> oral in consortium for 99 days. After this period, the cellular concentrations of the EAMI were determined through Most Probable Number (MPN) and quantitative Polymerase Chain Reaction (qPCR), in addition to analysis by scanning electron microscopy and epifluorescence.</div></div><div><h3>Results</h3><div>The qPCR showed a reduction in the bacterial load from 1.70<!--> <!-->×<!--> <!-->10⁷ to 1.90<!--> <!-->×<!--> <!-->10⁴ cells/mL, while MPN indicated that the number of culturable cells was greater than 2.4<!--> <!-->×<!--> <!-->10⁴ cells/mL. Biofilms associated with EAMI exposed to Sulfate-reducing bacteria (SRB) exhibited a low cell density (4–7.5<!--> <!-->×<!--> <!-->10¹ cells/cm²). Despite the formation of biofilms on exposed surfaces, no corrosion pits were observed. Corrosion rates were not significantly lower in EAMI exposed to SRB (0.0003418<!--> <!-->±<!--> <!-->0.0025805<!--> <!-->mm/year) compared to controls (0.011621<!--> <!-->±<!--> <!-->0.0176811<!--> <!-->mm/year; <em>P</em> <!-->=<!--> <!-->0.200).</div></div><div><h3>Conclusions</h3><div>The <em>D. fairfieldensis</em> oral consortium is capable of adhering to the metallic titanium surface of the EAMI, forming biofilms in areas exposed to the external environment and at the interface between the anchorage, bone, and threads of the EAMI. However, the titanium composition of the EAMI results in a low and non-significant corrosion rate, with no corrosion pits observed in these areas.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101135"},"PeriodicalIF":1.9,"publicationDate":"2025-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145865789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of physical adjunctive interventions on root resorption in accelerated orthodontic treatment: A systematic review and meta-analysis","authors":"Mohamad Radwan Sirri ,&nbsp;Mohamad Yaman Salahi Alasbahi ,&nbsp;Mohammad Osama Namera ,&nbsp;Salar Karim Khalil","doi":"10.1016/j.ortho.2025.101123","DOIUrl":"10.1016/j.ortho.2025.101123","url":null,"abstract":"<div><h3>Background</h3><div>Orthodontically induced root resorption (RR) is a frequent adverse effect that may compromise long-term tooth stability. Physical adjunctive interventions (PAIs), such as vibration, photobiomodulation, low-intensity pulsed ultrasound (LIPUS), and low-intensity electrical stimulation (LIES), have been proposed to accelerate tooth movement while potentially minimizing RR, but their efficacy remains unclear.</div></div><div><h3>Objective</h3><div>To systematically evaluate the effect of PAIs on RR during orthodontic treatment based on evidence from randomized controlled trials (RCTs).</div></div><div><h3>Materials and methods</h3><div>Databases included PubMed, Scopus, Web of Science, Embase, and CENTRAL up to May 2025, supplemented by Google Scholar, TRIP, OpenGrey, PQDT Open, and hand-searching of orthodontic journals. No restrictions were applied on language or publication status. Eligibility included human randomized controlled trials comparing non-surgical physical adjunctive interventions with conventional orthodontic treatment and reporting quantitative orthodontically induced root resorption. Two reviewers independently performed screening, data extraction, and RoB 2 assessment; RR harms were evaluated with a modified McHarm tool, and certainty was appraised using the GRADE approach. Meta-analysis was conducted when appropriate. PROSPERO registration CRD420251116993.</div></div><div><h3>Results</h3><div>Twenty-two RCTs (<em>n</em> <!-->=<!--> <!-->534) were included. Evidence certainty was low to very low. Vibration and LIES showed no significant effect. LIPUS reduced root length loss during canine retraction by 0.015<!--> <!-->mm/week (<em>P</em> <!-->=<!--> <!-->0.042) and premolar volume loss by 0.53<!--> <!-->mm³ (<em>P</em> <!-->&lt;<!--> <!-->0.001). LED trays lowered premolar volume loss by 0.15<!--> <!-->mm³ (<em>P</em> <!-->&lt;<!--> <!-->0.001). Laser therapy reduced RR scores during En-masse retraction (<em>P</em> <!-->&lt;<!--> <!-->0.05). None of the PAIs increased RR compared with controls.</div></div><div><h3>Conclusions</h3><div>PAIs exhibit variable influence on RR. LIPUS and daily LED phototherapy show the most promising protective effects; however, current evidence remains limited by methodological weaknesses, small sample sizes, and short follow-up periods. Further well-designed RCTs are needed before widespread clinical adoption.</div><div>PROSPERO (Registration ID: CRD420251116993).</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101123"},"PeriodicalIF":1.9,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lower incisors decompensation by torque auxiliary spring for an adult high-angle Class III extraction camouflage with preadjusted lingual appliance: A case report","authors":"Enrico Albertini,&nbsp;Paolo Albertini,&nbsp;Anna Colonna,&nbsp;Luca Lombardo","doi":"10.1016/j.ortho.2025.101111","DOIUrl":"10.1016/j.ortho.2025.101111","url":null,"abstract":"<div><div>This case report describes a complex Class III high-angle case in an adult patient treated with preadjusted lingual appliance and premolar extractions. With the twofold aim of obtaining aesthetic improvement and ideal occlusal relationship, accurate set-up planification and linear biomechanical strategies, including lower incisors torque control, are needed to achieve the planned results. An auxiliary torque spring was inserted in order to obtain lower central incisors decompensation, for better occlusal and periodontal outcome. This case report demonstrates the possibility of solving successfully Class III malocclusion in adult patient by means of a completely invisible technique, with an orthodontic camouflage treatment by an ideal control of lower incisors torque, improving at the same time the patient facial aesthetics.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101111"},"PeriodicalIF":1.9,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145834958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of orthodontic extraction protocol on vertical skeletal relationships: A retrospective study","authors":"Martina Ferrillo ,&nbsp;Kieran Daly ,&nbsp;Nikolaos Pandis ,&nbsp;Padhraig S. Fleming","doi":"10.1016/j.ortho.2025.101133","DOIUrl":"10.1016/j.ortho.2025.101133","url":null,"abstract":"<div><h3>Introduction</h3><div>Extractions may be helpful in the relief of crowding and in incisal retraction. While extractions may help to control the vertical dimension, their effect is not clear-cut. Four premolar extractions (FPE) may be more potent in reducing the vertical dimension than two upper premolar extractions (UPE), although research to support this contention is lacking.</div></div><div><h3>Objectives</h3><div>The aim of this study is to evaluate the effect of orthodontic extraction protocols on vertical skeletal relationships.</div></div><div><h3>Material and methods</h3><div>A retrospective study involving participants either undergoing UPE or FPE-based treatment and non-extraction-based controls was performed. All cephalometric outcome measures were assessed before (T0) and after (T1) orthodontic treatment. The effect of extraction pattern on vertical skeletal dimension in terms of mandibular planes angle (MMPA) and anterior facial height (AFH) was assessed using a multivariable analysis.</div></div><div><h3>Results</h3><div>A total of 168 patients (86 males, 82 females) with a mean age of 13.69<!--> <!-->±<!--> <!-->5.03<!--> <!-->years were included. The MMPA reduced marginally in all three groups. Based on multivariable analysis adjusted for age, lower crowding at baseline, sex, and MMPA at baseline, the extraction pattern did not exert a significant effect on post-treatment MMPA (UPE group: coef.<!--> <!-->=<!--> <!-->−0.31; 95% CI: −1.06, 0.43, <em>P</em> <em>=</em> <!-->0.40; FPE group: coef.<!--> <!-->=<!--> <!-->−0.40; 95% CI: −1.75, 0.96; <em>P</em> <!-->=<!--> <!-->0.56) compared to non-extraction protocols. Similarly, the extraction pattern did not have a significant effect on post-treatment AFH (UPE group: coef.<!--> <!-->=<!--> <!-->0.50; 95% CI: −0.73, 1.73, <em>P</em> <!-->=<!--> <!-->0.42; FPE group: coef.<!--> <!-->=<!--> <!-->1.59; 95% CI: −0.65, 3.83; <em>P</em> <!-->=<!--> <!-->0.16).</div></div><div><h3>Conclusions</h3><div>Based on the findings of the present retrospective study, neither statistically nor clinically significant differences in the vertical skeletal relationships were introduced across UPE, FPE, and non-extraction groups. Post-treatment MMPA and AFH were significantly associated solely with their pre-treatment values.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101133"},"PeriodicalIF":1.9,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145834912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anchorage control with mandibular miniscrews in an adult severe high-angle Class II case treated by preadjusted lingual appliance, premolar extractions and orthognathic surgery","authors":"Enrico Albertini ,&nbsp;Adamo Monari ,&nbsp;Paolo Albertini ,&nbsp;Anna Colonna ,&nbsp;Luca Lombardo ,&nbsp;Ugo Baciliero","doi":"10.1016/j.ortho.2025.101113","DOIUrl":"10.1016/j.ortho.2025.101113","url":null,"abstract":"<div><div>This case report describes a complex full-step Class II high-angle case in an adult patient treated with lingual straight-wire appliance, premolar extractions and orthognathic surgery. With the twofold aim of obtaining ideal occlusal relationship and aesthetic improvement, surgical treatment with appropriate biomechanical strategies, including anchorage control during extraction space closure, are needed to achieve the planned results. This case report demonstrates the possibility of solving successfully severe sagittal, transverse and vertical discrepancies in an adult patient with surgical treatment by means of a completely invisible technique. This report also underlines the need for precise biomechanical control, including set-up overcorrections and miniscrews to manage anchorage control, in cases of extraction in lingual orthodontics. A refinement with composite reconstructions was performed at the end to obtain the best aesthetic and functional result.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101113"},"PeriodicalIF":1.9,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145834915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three pharmacological agents for acceleratory orthodontic tooth movement and subsequent relapse: A randomized controlled animal study","authors":"Samar Ali Hamed ,&nbsp;Mohammad Hasan Mohammad ,&nbsp;Mohamed E. Grawish ,&nbsp;Ahmed Maher Fouda ,&nbsp;Mona Abdelaziz Montasser","doi":"10.1016/j.ortho.2025.101112","DOIUrl":"10.1016/j.ortho.2025.101112","url":null,"abstract":"<div><h3>Objectives</h3><div>To investigate the effects of submucosal injections of acceleratory orthodontic materials and the subsequent relapse rate. No previous study has compared the effects of different acceleratory agents on post-retention relapse. Orthodontic tooth movement (OTM) in rats was evaluated over 4 weeks, followed by 2 weeks of retention and 2 weeks of relapse.</div></div><div><h3>Material and methods</h3><div>Randomization: The trial included 105 rats divided randomly with a blinded second author into five equal groups. Interventions: Group I (negative control) rats weren’t subjected to OTM or any acceleratory agents. Group II (positive control) rats underwent OTM without receiving any tested injectable materials. Groups III, IV, and V received the same OTM as Group II, accompanied by injections of corticosteroid, vitamin D, and PGE₂, respectively. The primary outcome: Tooth movement was measured at predetermined intervals, and histological assessments were performed after euthanasia. Statistical analysis was done using One-way ANOVA then post-hoc Tukey and paired <em>t</em>-test.</div></div><div><h3>Results</h3><div>During the acceleration phase, incisor movement was fastest in the corticosteroid group, followed by vitamin D, PGE₂, positive control, and negative control (<em>P</em> <!-->&lt;<!--> <!-->0.001). In contrast, relapse was lowest in the negative control, positive control, and PGE₂ groups, and higher in vitamin D and corticosteroid groups (<em>P</em> <!-->&lt;<!--> <!-->0.001). Histological findings were in the same line with the dental measurements. No harms were detected.</div></div><div><h3>Conclusion</h3><div>Local application of corticosteroid, vitamin D, and PGE₂ enhanced orthodontic tooth movement. While corticosteroid produced the greatest acceleration, PGE₂ was associated with the least subsequent relapse.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101112"},"PeriodicalIF":1.9,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145775887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of maxillomandibular ratio dynamics on post-pubertal sagittal classification: A retrospective historical cohort study","authors":"Rodrigo Oyonarte ,&nbsp;Mónica Valeria Castro ,&nbsp;Mackarena Sáez ,&nbsp;Florencia Arancibia ,&nbsp;Valeria Ramírez ,&nbsp;Andreu Puigdollers","doi":"10.1016/j.ortho.2025.101109","DOIUrl":"10.1016/j.ortho.2025.101109","url":null,"abstract":"<div><h3>Background</h3><div>Cephalometric measurements, like the ANB or the Wits, enable sagittal skeletal classification; however, they can be affected by compensations, and the maxillomandibular differential may be subject to radiographic magnification. The maxillomandibular ratio (MxMdR) could provide a dynamic, magnification-independent intermaxillary sagittal assessment.</div></div><div><h3>Aims</h3><div>To describe the MxMdR throughout facial development and assess its impact on determining post-pubertal sagittal classification.</div></div><div><h3>Material and methods</h3><div>Retrospective cohort study of 224 untreated individuals (AAOF-Craciofacial Growth Collection), including 1301 profile radiographs from 9 centers (1950s–1970s) with records spanning at least five stages of cervical maturation (CVS 1-6), classified based on final ANB and Wits (97 Class I, 82 Class II, 45 Class III). Measurements included the ANB, SNA, SNB, SN-GoGn, anterior facial height ratio, Wits, maxillary length, mandibular length, and MxMdR. Statistical analysis involved descriptive statistics, mixed models to assess developmental variations, and LASSO regression to identify early-stage predictors for the post-pubertal ANB angle.</div></div><div><h3>Results</h3><div>No significant differences were observed between sexes in sagittal measurements. MxMdR decreased progressively and significantly during growth, showing a class-specific distribution similar to ANB, while Wits decreased in Class III, remained stable in Class I, and increased in Class II individuals. LASSO regression identified initial ANB and MxMdR as key predictors for the post-pubertal ANB.</div></div><div><h3>Conclusions</h3><div>MxMdR evolves differently across skeletal classes, correlating with the final sagittal classification at all developmental stages. Including it alongside the initial ANB improves predictions of post-pubertal relationships. The MxMdR serves as a valuable, magnification-independent tool for early skeletal assessment, complementing traditional diagnostic methods.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101109"},"PeriodicalIF":1.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145753523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined use of miniscrews, facemask and clear aligner appliances for the treatment of an 11-year-old girl with unilateral posterior scissor bite and skeletal class III malocclusion: A case report","authors":"Yusi Ye,&nbsp;Congman Xie,&nbsp;Lina Bao,&nbsp;Hongzhen Xiong","doi":"10.1016/j.ortho.2025.101091","DOIUrl":"10.1016/j.ortho.2025.101091","url":null,"abstract":"<div><div>This article illustrates the successful treatment of scissor bite correction using facemask, clear aligner appliances and miniscrew anchorage. An 11- and 3-month-old girl presented with crossbite as the main complaint. The patient was diagnosed with an Angle Class III malocclusion with severe unilateral scissor bite. An Anglebutton™ on the clear aligner appliance and a facemask were used to protract the maxilla during the first set of aligner treatments. Miniscrews were inserted into the posterior region to correct the scissor bite and to intrude posterior teeth, in combination with aligners and occlusal pads on the healthy occlusion side. Because of the attachments on the occlusal surface and the bite-plane effect of aligners, the scissor bite was unlocked and corrected effectively within a short time. The total active treatment period was 17 months. The treatment suggested that the combined use of miniscrew anchorage, clear aligner appliances, and facemask (FM) increased the efficiency of skeletal class III malocclusion with severe unilateral scissor bite correction.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101091"},"PeriodicalIF":1.9,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145716189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clear aligner-based multidisciplinary camouflage treatment for adult skeletal class III malocclusion: A 7-year follow-up","authors":"Menghan Zhang ,&nbsp;Wenzhe Zhang ,&nbsp;Xueyan Xia,&nbsp;Yan Lv,&nbsp;Yanfang Yu,&nbsp;Mengjie Wu","doi":"10.1016/j.ortho.2025.101110","DOIUrl":"10.1016/j.ortho.2025.101110","url":null,"abstract":"<div><div>This case report describes non-surgical camouflage treatment of a skeletal Class III malocclusion in a 28-year-old female using clear aligners, integrating orthodontics, restorative dentistry, and implantology. The patient presented with a full Class III molar relationship with borderline cephalometric values (Wits appraisal: −4.92<!--> <!-->mm; Holdaway angle: 11°), and some functional issues. The orthodontic approach prioritized vertical and sagittal correction, including bite opening through intrusion and retroclination of mandibular incisors and proclination of maxillary incisors. The thickness of the aligner material with attachments on the occlusal surfaces of molars to open the bite, supplemented by Class III elastics contributing to favourable mandibular plane clockwise rotation and occlusal plane counterclockwise flattening. Substantial dental changes resulted, including maxillary incisor proclination (99.17° to 109.74°), mandibular incisor retroclination (96.37° to 88.08°), with roots maintained within basal bone. The soft tissue profile improved (NA-Apo: −5.31° to −2.51°), and normal overjet, overbite, and molar intercuspation were achieved. The multidisciplinary approach also involved restoring a discoloured UL1, initially managed with conservative observation before being extracted and replaced with an implant, along with aesthetic restoration of the anterior teeth. Seven-year follow-up showed stable results, highlighting the effectiveness of carefully planned clear aligner in camouflage treatment treating Class III malocclusions.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101110"},"PeriodicalIF":1.9,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145716152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}