International Orthodontics最新文献

{"title":"Orthodontic treatment of deep bite in mixed dentition and/or early permanent dentition: What about stability? - A systematic review.","authors":"Boutaina El Guennouni, Afaf Houb-Dine, Hajar Ben Mohimd, Fatima Zaoui","doi":"10.1016/j.ortho.2024.100956","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100956","url":null,"abstract":"<p><strong>Introduction: </strong>Deepbite is a vertical malocclusion found alone or in association with other types of sagittal and transverse disorders. With a high relapse tendency, deepbite is considered one of the most challenging malocclusions to treat. It is commonly found in mixed dentition with increased prevalence of 21.3% compared to 14.1% in temporary dentition, thus resulting on unfavourable consequences, preventing the mandible from its full growth potential. Therefore, this systematic review aims to investigate the efficiency of conducting an early correction of deepbite malocclusion in mixed and early permanent dentition on the long-term postretention outcomes.</p><p><strong>Material and methods: </strong>An electronic search extending from 2000 to July 2024, was performed on the following databases Medline via PubMed, Web of Science, Science Direct and Embase. The search was established on a well-defined research question following PICO principle: population, intervention, comparator and outcome. Search evaluation and the assessment of risk of bias were undertaken in each study following its type and design.</p><p><strong>Results: </strong>Six studies were included for qualitative analysis, with overall moderate RoB. Two studies treated deepbite in a single phase orthopaedic treatment with eruption guidance appliance in early mixed dentition; two studies orthodontically corrected deepbite at early permanent dentition using fixed multibracket appliance and two studies used a combination of orthopaedic treatment followed by orthodontic treatment targeting both subjects in early mixed and early permanent dentition.</p><p><strong>Conclusion: </strong>Patients treated in late mixed to early permanent dentition presented better efficacy and greater stability of outcomes than patients treated in the early mixed phase of dentition. More studies must be conducted to support and confirm the results of the included studies.</p><p><strong>Prospero under the registration id: </strong>CRD42023408820.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100956"},"PeriodicalIF":1.8,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142915905","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":"Comparison of self-perception in relation to the normative need for orthodontic treatment in a population of dental students in Brazil: A cross-sectional study.","authors":"Luciana Rougemont Squeff, Flavio Copello, Guido Artemio Marañón-Vásquez, Ronir Raggio Luiz, Lincoln Nojima, Matilde da Cunha Gonçalves Nojima","doi":"10.1016/j.ortho.2024.100963","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100963","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to identify predictive factors of having a positive or negatively divergent self-perception from the normative orthodontic treatment need (N-OTN).</p><p><strong>Methods: </strong>All eligible undergraduate students from the School of Dentistry of the XXX were recruited through convenience sampling. They were clinically evaluated to determine their N-OTN using the IOTN and were asked about their self-perceived orthodontic treatment need (S-OTN) using the same scale for both evaluations. The subjects were classified according to the orientation of their perception as: coincident (S-OTN=N-OTN), positive (S-OTN<N-OTN), or negative (S-OTN>N-OTN). Multinomial logistic regression models were implemented to evaluate the contribution of the N-OTN, Angle's malocclusion, oral health-related quality of life (OHRQoL), self-esteem, sex, undergraduate year and age.</p><p><strong>Results: </strong>Two hundred first- and third-year undergraduate dentistry students were evaluated. It was evidenced that a higher N-OTN increases the probability that S-OTN is positively oriented and decreases the probability that it is negative. A worse OHRQoL score increases the chance that the S-OTN orientation is negative and decreases the chance that it is positive. Moreover, the probability of divergent self-perception in either direction is expected to be lower for women.</p><p><strong>Conclusions: </strong>Students with a more severe malocclusion tend to have a more positive view of their normative condition. A greater impact on OHRQoL favours having a more negative self-perception of the N-OTN. Women have a less divergent self-perception of the N-OTN.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100963"},"PeriodicalIF":1.8,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142899151","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 quality of orthognathic surgery information on social media: A scoping review.","authors":"Mimi Ngo, Emilija Jensen, Maurice Meade","doi":"10.1016/j.ortho.2024.100959","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100959","url":null,"abstract":"<p><strong>Introduction: </strong>Orthognathic surgery combined with orthodontic treatment is commonly undertaken to address facial and dental disharmony. Content uploaded onto social media platforms can be an important source of healthcare information. This scoping review aimed to collate and synthesize data from studies that investigated the quality of information communicated through these platforms.</p><p><strong>Methods: </strong>Five databases and grey literature were searched, with no restrictions on location and year published. The PCC (Population, Concept, Context) framework was adopted to select eligible studies. Inclusion criteria included literature that assessed the quality of information on orthognathic surgery in relation to orthodontic treatment in the context of social media.</p><p><strong>Results: </strong>A total of 12 cross-sectional studies satisfied the selection criteria. The most investigated social media platform was YouTube. The quality of information on all platforms examined was found to be poor to moderate. The most popular content featured patients sharing their treatment experiences, but these often lacked clinically relevant information, focusing mainly on satisfaction with treatment, outcomes and their supervising healthcare professionals. In contrast, healthcare professionals provided content that contained better quality information but had lower views and engagement. The least frequently mentioned topics were found to be complications and their duration, costs, and postoperative expectations. Certain search terms such as \"#jawsurgery\", \"#surgeryfirst\" and \"#genioplasty\" appeared to resonate more with the public. There was heterogeneity across the methodologies and quality of information instruments used.</p><p><strong>Conclusions: </strong>Information communicated through social media platforms regarding orthognathic surgery was of poor to moderate quality. Orthodontic professionals should be aware of the limitations of health information on these online platforms and guide individuals to more accurate sources.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"100959"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873089","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":"Management of facial asymmetry assisted with digitally designed surgical guide for 3-dimensional maxillary repositioning: A case report.","authors":"Sanjeev Verma, Vinay Kumar, Raj Kumar Verma, Naveen K Subbaiah, Chaman Lal, Satinder Pal Singh, Shagun Sharma","doi":"10.1016/j.ortho.2024.100953","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100953","url":null,"abstract":"<p><p>Orthodontists play a pivotal role in diagnosing, planning, and preparing patients for orthognathic surgeries. Digital technologies like cephalometry, intraoral scans, CBCT scans, CAD-CAM-assisted 3-D planning, and printed surgical splints, have largely replaced conventional techniques. The automated software produces surgical splints with a design similar to conventional which may not address complex scenarios, involving symmetric and asymmetric maxillary impaction. To address this, a surgical splint designed using 3D dolphin software was modified with 3-matic software for precise guidance. This article gives insight into the digitally designed surgical splint for the correction of facial asymmetry on skeletal Class III bases and occlusal canting in an 18-year-old woman. The precise relocation of the maxilla was achieved as planned pre-surgically leading to significant improvement in the facial aesthetics. In conclusion, modified splint design fabrication offers more predictable outcomes, reduces laborious laboratory procedures, and acts as a reliable guide for precise surgical results.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"100953"},"PeriodicalIF":1.8,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822732","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":"Can fluoxetine influence orthodontic tooth movement? A systematic review and meta-analysis of studies on animal models.","authors":"Fawad Javed, Zain Uddin Ahmed, P Emile Rossouw, Georgios E Romanos","doi":"10.1016/j.ortho.2024.100960","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100960","url":null,"abstract":"<p><strong>Introduction: </strong>Selective serotonin reuptake inhibitors (SSRIs) such as fluoxetine adversely affect bone mineral density (BMD) and turnover, thereby increasing the risk of fractures. The objective of the present systematic review and meta-analysis was to evaluate studies on animal models that assessed whether fluoxetine can influence orthodontic tooth movement (OTM).</p><p><strong>Material and methods: </strong>Indexed databases (PubMed/Medline, EMBASE, Cochrane Library, Scopus and ISI Web of Knowledge) and Google Scholar were searched without time and language barriers up to and including June 2024. Original studies that assessed the influence of fluoxetine on OTM were included. Letters to the Editor, reviews, commentaries, perspectives and, in-vitro/ex-vivo studies were excluded. Study selection, and risk of bias (RoB) and quality assessments were assessed. Quantitative assessment (meta-analysis) was also performed using fixed-effects and random effects models.</p><p><strong>Results: </strong>Four studies performed on male rats were included. Rats in the experimental group underwent OTM with adjunct fluoxetine injections at concentrations ranging between 10-20mg/kg. Orthodontic forces applied ranged between 25-60grams. Three studies reported that fluoxetine does not influence OTM. All studies had a high RoB. Three studies demonstrated low certainty (weak) and two showed very low certainty of evidence. In the meta-analysis, the pooled SMD using a random effects model was 0.05 (95% CI: -0.42 to 0.52), indicating no significant overall effect of fluoxetine on OTM. The analysis revealed substantial heterogeneity across the included studies.</p><p><strong>Conclusion: </strong>Further well-designed and power-adjusted prospective studies are needed to elucidate the role of SSRIs on OTM.</p><p><strong>Systematic review registration: </strong>PROSPERO CRD42024563793.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100960"},"PeriodicalIF":1.8,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822743","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":"Effect of archwire size and lever arm length on anterior and posterior teeth movement during en-masse retraction in personalized lingual orthodontics: A 3-dimensional finite element study.","authors":"Lin Lu, Yafen Zhu, Naiqun Yu, Li Xu, Xiaoyan Chen","doi":"10.1016/j.ortho.2024.100962","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100962","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the biomechanical effect of anterior and posterior teeth in en-masse retraction in lingual orthodontics using varied archwire sizes and lever arm lengths.</p><p><strong>Methods: </strong>A finite element model of lingual orthodontics for retracting maxillary anterior teeth was established. The archwire was designed into: Archwire 1: 0.016×0.022-inch stainless steel (SS) with 15° extra torque on central incisors, Archwire 2: 0.016×0.024-inch SS with 13° extra torque on anterior teeth, Archwire 3: 0.017×0.025-inch SS with laterally 0.016×0.024-inch, and Archwire 4: 0.018×0.025-inch SS with laterally 0.016×0.0225-inch. Moreover, the lever arm was set to 0mm, 2mm, 4mm, 6mm, 8mm, and 10mm. Initial displacements were calculated after applying 1.5N force from mini-implant to lever arms.</p><p><strong>Results: </strong>In Archwire 1, increasing intrusion and labial tipping on central incisors and decreasing lingual tipping on lateral incisors and canines, as well as decreasing palatal tipping and distal inclination on posterior teeth were observed with lever arm length increase. In Archwire 2, with the lever arm length increase, incisors exhibited increasing labial tipping, while palatal inclination and intrusion of posterior teeth decreased. In Archwire 3 and 4, torque control ability of anterior teeth increased with longer lever arms, as well as decreasing extrusion was observed on central incisors. Posterior teeth moved buccally and distally.</p><p><strong>Conclusions: </strong>Thick archwire without extra torque combined with longer lever arm are more conducive to en-masse retraction of central incisor. Moreover, extra torque on thinner archwire can also effectively control torque. Besides, additional torque and lever arm lengths affect the movement of posterior teeth.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100962"},"PeriodicalIF":1.8,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822746","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":"Evaluation of the presence of the premaxillary-maxillary suture in growing patients: A retrospective CBCT study.","authors":"María Jesús Larrañaga, Taly Lopez, Agustina Maass, María Paz Rodríguez, Ingrid Arndt, Rodrigo Villanueva, Pamela Villalón","doi":"10.1016/j.ortho.2024.100958","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100958","url":null,"abstract":"<p><strong>Background: </strong>The premaxillary-maxillary suture (PMS) is related to midface development, but its exact closure period remains undefined. Some authors consider the premaxilla as an independent bone with potential for orthopaedic stimulation, while others see it as a phylogenetic vestige.</p><p><strong>Objective: </strong>To determine the prevalence of the premaxillary-maxillary suture (PMS) in cone beam computed tomography (CBCT) images of patients aged 6 to 16years, according to age and sex, treated at the Dental Clinic of the Pontificia Universidad Católica de Chile's Oral Imaging Service between 2015 and 2023.</p><p><strong>Material and methods: </strong>CBCT images from 511 subjects were analysed. The presence or absence of the PMS was evaluated in the oblique axial slice. Descriptive statistics of the sample were performed, followed by logistic regression models to assess the relationship between the presence of the PMS and age and sex variables, with a significance level of 5%.</p><p><strong>Results: </strong>Of the total sample (511 subjects), only 190 cases presented a visible PMS in CBCT images (37.18%), with 104 females and 86 males. When analysing the relationship with sex, no statistically significant association was found (P=0.090, OR=0.72). However, a statistically significant association with age was observed (P<0.001, OR=0.75).</p><p><strong>Conclusion: </strong>The prevalence of the PMS in this study was 37.18%, significantly associated with age. The probability of observing the PMS in CBCT images decreases by 25% for each additional year of age. This suggests that PMS is more likely to be observed at younger ages and may be a factor to consider for anterior maxillary advancement in patients with maxillary retrusion. Further studies are needed to evaluate the degree of suture fusion to determine if it can be effectively stimulated by orthopaedic appliances.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100958"},"PeriodicalIF":1.8,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822750","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":"Periodontal, occlusal, and aesthetic outcomes of missing maxillary lateral incisor replacement: A systematic review and network meta-analysis.","authors":"Marco Migliorati, Arianna Zuffanti, Margherita Capuano, Luigi Canullo, Vito Carlo Alberto Caponio, Maria Menini","doi":"10.1016/j.ortho.2024.100957","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100957","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this systematic review was to determine the best treatment alternatives for patients with maxillary lateral incisor agenesis (MLIA) by comparing orthodontic space closure, implant and tooth supported dental prostheses by assessing studies that evaluated their periodontal, occlusal (function) and aesthetic results.</p><p><strong>Methods: </strong>The present systematic review was reported according to the indications of the preferred reporting items for systematic reviews and meta-analysis (PRISMA) incorporating network meta-analysis, and the protocol was registered with PROSPERO (CRD42023487245). The PRISMA systematic search, without restriction on language or initial date, was carried out using electronic databases: MEDLINE (PubMed), Scopus and central register of controlled trials. To assess the aesthetic effects of the different treatment methods, an arm-based network meta-analysis was carried out.</p><p><strong>Results: </strong>The systematic search initially produced 1177 studies. At the end 10 studies met the inclusion criteria. These studies used various methods of treatment for maxillary lateral incisor agenesis including orthodontic space closure, implant-supported and tooth-supported dental prostheses. Data were extracted from the articles selected, and a network meta-analysis was carried out.</p><p><strong>Conclusions: </strong>Within the limits of this network meta-analysis, no significant difference was found regarding the aesthetic results between orthodontic space closure or dental implant. Tooth-supported dental prostheses for MLIA reported worse scores in the periodontal indexes than orthodontic space closure treatment but the impact of orthodontic and prosthetic treatment on periodontal health remained contentious. Furthermore, no signs of TMJ dysfunction were observed in patients treated with either orthodontic space closure or prosthetic replacement.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"100957"},"PeriodicalIF":1.8,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142819740","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":"A comparative in vitro study of different composite materials in terms of aligner attachment accuracy and surface roughness using different curing irradiances.","authors":"Servet Erbas, Ezgi Atik","doi":"10.1016/j.ortho.2024.100961","DOIUrl":"https://doi.org/10.1016/j.ortho.2024.100961","url":null,"abstract":"<p><strong>Background: </strong>To evaluate 4 different composite resins in terms of aligner attachment accuracy and surface roughness.</p><p><strong>Material and methods: </strong>160 premolars were divided into 4 groups (n=40): Group 1: GC Aligner Connect™; 2: GC Ortho Connect™; 3: 3M ESPE Filtek™ Z350 XT flowable; 4: 3M ESPE Filtek™ Z350 XT Universal. Each group was divided into 2 equal subgroups regarding curing irradiances (Power of 1000 mW/cm² in subgroup A for 10s, and 3200 mW/cm²in B for 3s, VALO™ Cordless-LED Curing Light). The primary objective was to compare the realized attachments with those of the virtual with 3D Geomagic software. A contact surface profiler was used for roughness measurement (Ra) as the secondary aim. The data were analysed using the IBM SPSS 25.0. The significance level was set at p<0.05.</p><p><strong>Results: </strong>In subgroup A, the mean \"excess\" accuracy measurement of the 3M ESPE Filtek ™Z350 XT flowable resin was found to be higher than others. In subgroup B, the \"excess\" accuracy measurements of the 3M ESPE Filtek™Z350 XT flowable (0.24±0.07mm) and Universal (0.26±0.05mm) resins were significantly higher than those of the GC Aligner Connect™ resin (0.17±0.06mm), (p<0.05). According to the Ra measurements in subgroup A, the measurement of the GC Aligner Connect™ (1.75±1.09μm), GC Ortho Connect™ (0.99±1.04μm) and 3M ESPE Filtek™ Z350 XT flowable (1.33±1.16μm) resins were found to be higher than of the Universal resin (0.07±0.11μm), (p<0.05). In subgroup B, the Ra measurement of the GC Aligner Connect™ (1.74±1.81μm) was found to be higher than that of the 3M ESPE Filtek™ Z350 XT flowable (0.11±0.18μm) resin (p=0.010). Ra measurement observed for the 10-second curing factor for the 3M ESPE Filtek™ Z350 XT Flowable resin group was found to be significantly higher than for the 3-second curing factor (p<0.001).</p><p><strong>Conclusion: </strong>In terms of \"excess\" value of accuracy, 3M ESPE Filtek™ Z350 XT flowable composite resin showed a higher value. The lowest surface roughness was observed for Universal restorative resin considering low power irradiation, while was observed for 3M ESPE Filtek™ Z350 XT flowable resin considering high power irradiation.</p>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 2","pages":"100961"},"PeriodicalIF":1.8,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814251","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":"Non-extraction camouflage on a fully cooperative full-step class II division 2 adult patient treated with en-masse distalization, class II elastics and preadjusted lingual appliance: A case report","authors":"Enrico Albertini,&nbsp;Anna Colonna,&nbsp;Paolo Albertini,&nbsp;Luca Lombardo","doi":"10.1016/j.ortho.2024.100954","DOIUrl":"10.1016/j.ortho.2024.100954","url":null,"abstract":"<div><div>This article describes one adult bilateral full-step class II case with severe initial upper incisors retroclination successfully treated by a completely invisible lingual appliance. A non-extraction treatment to compensate for the severe sagittal discrepancy was made possible following the excellent patient cooperation with intermaxillary elastics, combined with upper arch en-masse effective distalization with miniscrews. The application of an auxiliary torque spring was essential to increase upper incisors torque during class II mechanics. This case report shows the possibility of obtaining a full-step class II correction in an hypodivergent adult patient with a completely invisible appliance, taking advantage for the patient cooperation, for a more straightforward and faster non-extraction case resolution. It also underlines on the other hand the importance of successfully controlling incisors torque with auxiliaries in cases of severe retroclination in an adult class II malocclusion, in combination with the simultaneous distalization mechanics for monolateral full-step class II correction, by means of a completely invisible appliance.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100954"},"PeriodicalIF":1.8,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721694","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}