International Orthodontics最新文献

{"title":"Effectiveness of universal adhesives for orthodontic bonding to enamel and restorative materials: A systematic review","authors":"Claire-Adeline Dantagnan ,&nbsp;Maureen Boudrot ,&nbsp;Julia Bosco ,&nbsp;Gauthier Dot ,&nbsp;Ali Nassif ,&nbsp;Philippe François ,&nbsp;Jean-Pierre Attal","doi":"10.1016/j.ortho.2025.101089","DOIUrl":"10.1016/j.ortho.2025.101089","url":null,"abstract":"<div><h3>Objective</h3><div>Universal adhesives (UAs), introduced in 2011, are well established in restorative dentistry but remain relatively unexplored in orthodontics, where their capacity to bond to enamel and multiple restorative materials could simplify bonding protocols and reduce the need for primers. This systematic review evaluated the bond strength of UA for orthodontic applications — including bracket bonding, fixed retainers, and bonding to restorative surfaces — compared with conventional adhesives.</div></div><div><h3>Search methods</h3><div>Searches were conducted in PubMed, Embase, Scopus, Web of Science, and the Cochrane Library, supplemented by Google Scholar and reference lists. The protocol was registered in PROSPERO (ID: CRD420250654277). The search covered 2011 to 1 December 2024. Eligible studies were in vitro, in vivo, or clinical studies in English assessing UA for orthodontic bonding. Exclusion criteria were case reports, reviews, abstracts, theses, and non-orthodontic applications. Risk of bias was assessed with QUIN tool (in vitro) and RoB-2 (clinical).</div></div><div><h3>Results</h3><div>Of 401 records, 323 remained after removing duplicates; 248 were excluded at title/abstract and 38 at full text, leaving 37 studies (36 in vitro; 1 with an in vitro and clinical component). Seven orthodontic applications were investigated. UA generally provided sufficient bond strength, except on some metal restorations. On enamel, phosphoric-acid etching for 15<!--> <!-->s improved adhesion. On ceramics, hydrofluoric acid etching (HF) or sandblasting enhanced performance. For polymethyl-methacrylate (PMMA) and composite restorations, bur roughening or sandblasting improved results.</div></div><div><h3>Conclusions</h3><div>UAs may simplify orthodontic bonding across enamel and restorative surfaces without separate primers, but more clinical studies are needed.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101089"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145575034","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":"Shear bond strength of orthodontic metal brackets using Assure® Plus with and without Pro Seal®: An in vitro study","authors":"Maria Doughan,&nbsp;David Greene,&nbsp;Flavio Copello,&nbsp;Dina Stappert","doi":"10.1016/j.ortho.2025.101103","DOIUrl":"10.1016/j.ortho.2025.101103","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the shear bond strength (SBS) of orthodontic brackets bonded with Assure Plus® alone and in combination with Pro Seal®, and to assess the adhesive remnant index (ARI) scores following bracket debonding.</div></div><div><h3>Material and methods</h3><div>This in vitro experimental study included forty-two extracted human premolar teeth, randomly assigned to two bonding groups: the control group (Assure Plus®) and the test group (Assure Plus® with Pro Seal®). After bonding, all specimens were stored at 37<!--> <!-->̊C for 24<!--> <!-->h before SBS testing. The Shapiro–Wilk test was used to assess normality, and group comparisons were performed using the Mann–Whitney U test (α<!--> <!-->=<!--> <!-->0.05).</div></div><div><h3>Results</h3><div>The control group demonstrated a mean SBS of 11.20<!--> <!-->±<!--> <!-->2.51<!--> <!-->MPa and a mean peak load of 90.09<!--> <!-->±<!--> <!-->20.21<!--> <!-->N, while the test group (Assure Plus® with Pro Seal®) showed a mean SBS of 10.62<!--> <!-->±<!--> <!-->3.56<!--> <!-->MPa and a mean peak load of 85.47<!--> <!-->±<!--> <!-->32.61<!--> <!-->N. The Mann-Whitney U test revealed no statistically significant differences between the groups for either SBS (<em>P</em> <!-->=<!--> <!-->0.094) or peak load (<em>P</em> <!-->=<!--> <!-->0.134). Both groups exceeded the clinically acceptable SBS threshold of 6–8<!--> <!-->MPa. ARI scores were identical between groups, with 95% of samples scoring 2 and 5% scoring 1, indicating adhesive failures with more than 50% of the adhesive remaining on the tooth surface.</div></div><div><h3>Conclusion</h3><div>The combination of Pro Seal® and Assure Plus®, as recommended for bonding to atypical enamel surfaces, produced bond strengths comparable to Assure Plus® alone. These findings support its use as a clinically acceptable bonding protocol in orthodontic practice.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101103"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684678","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-surgical treatment of adult skeletal class III patient with severe alveolar bone loss by sequential segmental displacement and third molar extraction: A case report","authors":"Hyeon Gi Hong ,&nbsp;Hieu Nguyen ,&nbsp;Amani Alkhamees ,&nbsp;Kee-Joon Lee","doi":"10.1016/j.ortho.2025.101087","DOIUrl":"10.1016/j.ortho.2025.101087","url":null,"abstract":"<div><div>Compromised periodontal conditions pose challenges in orthodontic treatment. In particular, maxillomandibular skeletal discrepancies may require large-scale tooth movement, making it essential to avoid round-tripping movements to minimize dental and periodontal side effects. This case report describes a 49-year-old male patient with skeletal Class III malocclusion and severe alveolar bone loss, particularly affecting the anterior teeth, who sought non-surgical treatment with aesthetic lingual orthodontic appliances. A comprehensive diagnosis and treatment plan were formulated to establish a flat occlusal plane and Class I molar relationship while minimizing round-tripping of the anterior segment. Segmental distalization of mandibular molars, followed by intrusion of the mandibular incisors, was performed with the aid of miniscrews to achieve normal occlusion and an improved facial profile without further alveolar bone loss. This case report highlights the use of segmental archwires and an orthodontic force system based on the centre of resistance to preserve periodontal support in a middle-aged patient with skeletal Class III malocclusion and severe alveolar bone loss.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101087"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145574344","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":"Load–deflection characteristics of Damon™ Ultima vs heat-activated NiTi wires in passive self-ligating brackets: An in-vitro experimental study","authors":"Sayed Abdul Hadhi,&nbsp;Monis Raza,&nbsp;Achint Juneja,&nbsp;Stuti Mohan","doi":"10.1016/j.ortho.2025.101092","DOIUrl":"10.1016/j.ortho.2025.101092","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the load–deflection characteristics of Damon™ Ultima (0.014<!--> <!-->×<!--> <!-->0.0275“) wires compared with heat-activated nickel–titanium (HANT, 0.014<!--> <!-->×<!--> <!-->0.025”) wires across different passive self-ligating brackets (PSLBs).</div></div><div><h3>Material and methods</h3><div>One hundred eight bracket–wire assemblies were allocated into six groups based on three PSLB systems (Damon™ Ultima, Damon™ Q, Unitek™ Gemini SL) and two wire types. A modified ISO 15841 three-point bending test was performed at 37<!--> <!-->̊C using an Instron machine, with deflections recorded at 0.5<!--> <!-->mm steps from 3.0 to 0.5<!--> <!-->mm. A supplementary wet-after-thermocycling protocol (5000 cycles; artificial saliva) assessed ecological validity. Statistical analysis (SPSS v23) included <em>t</em>-tests, one-way ANOVA/Kruskal–Wallis tests, and effect-size estimation (Cohen's <em>d</em>, Hedges’ <em>g</em>) with 95% confidence intervals; multiple comparisons were adjusted using the Holm–Bonferroni method.</div></div><div><h3>Results</h3><div>Damon™ Ultima wires produced significantly lower deactivation forces than HANT wires across PSLBs at 1.0- and 1.5-mm deflections (<em>P</em> <!-->&lt;<!--> <!-->0.001). Activation differences were bracket-dependent, with significant reductions observed mainly in Damon™ Ultima brackets. Wet-after-thermocycling reduced deactivation forces by 23–37% at 1.0–1.5<!--> <!-->mm, with large paired effect sizes (Hedges’g ≈–1.5 to–1.9). Force delivery remained light and consistent despite the larger 0.0275″ cross-section.</div></div><div><h3>Conclusion</h3><div>Within the limits of this bench study, Damon™ Ultima wires exhibited lower unloading forces at clinically relevant deflections across PSLBs, potentially facilitating earlier bracket engagement and rotational efficiency. However, rotational control was not directly measured, and clinical trials are warranted to validate these findings.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101092"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145574363","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":"CBCT evaluation of mandibular retromolar space in adult patients according to skeletal Class and facial biotype: A cross-sectional study","authors":"Joffre Dario Pasmay Narvaez ,&nbsp;Marjory Elizabeth Vaca Zapata ,&nbsp;Mauricio Aguirre Balseca ,&nbsp;Karina Maria Salvatore Freitas ,&nbsp;Daysi Cristina Galarza Maldonado","doi":"10.1016/j.ortho.2025.101088","DOIUrl":"10.1016/j.ortho.2025.101088","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate mandibular retromolar bone availability across skeletal patterns using cone-beam computed tomography (CBCT), considering crown- and root-level trajectories.</div></div><div><h3>Methods</h3><div>This retrospective cross-sectional study analysed 120 CBCT scans (18–60 years; mean age 29.8<!--> <!-->±<!--> <!-->9.8 years) obtained between 2022 and 2025 from an institutional database. From an initial pool of 465 scans, inclusion criteria comprised adults without third molars, alveolar bone loss, or craniofacial anomalies. Measurements were performed along two reference lines (cusp and sagittal) at four planes (0, 2, 4, and 6<!--> <!-->mm). Statistical analyses included Friedman, Kruskal-Wallis, and Chi-square tests (α<!--> <!-->=<!--> <!-->0.05).</div></div><div><h3>Results</h3><div>Retromolar space decreased significantly from plane 0 to plane 6 in both reference lines, with consistently smaller and more variable values in the sagittal line (root level). Skeletal Class III patients exhibited the greatest mean space (6.9<!--> <!-->mm), followed by Class I (5.3<!--> <!-->mm) and Class II (3.8<!--> <!-->mm). No significant differences were observed among facial biotypes. Males presented significantly larger values than females across nearly all planes.</div></div><div><h3>Conclusions</h3><div>Mandibular retromolar space is more restricted at the root level and varies according to skeletal Class and sex. Class II patients present the most limited space and therefore require the most cautious distalization planning. CBCT assessment is essential to guide individualized biomechanics and minimize the risk of root-cortical contact or iatrogenic complications.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101088"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419382","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":"2026-06-01","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}

{"title":"Impact of upper central incisor contact with incisive canal on root resorption and retraction efficiency: A retrospective CBCT study","authors":"Wenhsuan Lu ,&nbsp;Tianyi Xin ,&nbsp;Liting Liu ,&nbsp;Jade Teng ,&nbsp;Bing Han ,&nbsp;Xiaomo Liu ,&nbsp;Si Chen ,&nbsp;Xiaoyun Zhang","doi":"10.1016/j.ortho.2025.101138","DOIUrl":"10.1016/j.ortho.2025.101138","url":null,"abstract":"<div><h3>Objective</h3><div>To explore the impact of contact between the upper central incisors’ roots and the incisive canal on retraction efficiency and root resorption during extensive orthodontic retraction.</div></div><div><h3>Materials and Methods</h3><div>The retrospective study used cone-beam computed tomography (CBCT) data from 65 patients undergoing orthodontic extraction treatment with retraction of incisors (≥3<!--> <!-->mm) between 2018 and 2023. All eligible cases during this period were consecutively included. CBCT scans were obtained before and after the treatment. The changes in root length (ΔRL), <figure><img></figure>U1/PP, U1-IC distance, horizontal retraction distance of the incisal edge (HRD), and horizontal retraction distance of the alveolar ridge crest (HRD’) were compared between the contact and non-contact groups.</div></div><div><h3>Results</h3><div>Among the 65 included patients, approximately 30.77% of the cases exhibited contact between the upper central incisor roots and the incisive canal. The initial upper incisor to palatal plane angle (<figure><img></figure>U1/PP) in the non-contact group was significantly greater than that in the contact group. However, the change of upper incisor to palatal plane angle (ΔU1/PP) following treatment showed no statistically significant difference between the two groups. The amount of root resorption in the contact group was significantly greater than that in the non-contact group, but there were no significant differences in HRD and HRD’ between the two groups.</div></div><div><h3>Conclusion</h3><div>Contact between the roots of the maxillary incisors and the incisive canal was associated with increased root resorption. Patients with smaller initial <figure><img></figure>U1/PP values were more likely to experience such contact. Although retraction of the incisal edges and the alveolar ridge crest was not significantly affected, this type of contact may represent a biological compromise and should be avoided when possible.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101138"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076861","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":"Revisiting aetiological models of maxillary canine impaction and its association with non-syndromic hypodontia: a nested case-control study among French orthodontic patients","authors":"Miléna Bazin ,&nbsp;Olivia Kérourédan ,&nbsp;Elsa Garot ,&nbsp;Julien Van Gils ,&nbsp;Anaïs Cavaré","doi":"10.1016/j.ortho.2026.101145","DOIUrl":"10.1016/j.ortho.2026.101145","url":null,"abstract":"<div><h3>Objectives</h3><div>This study aimed to investigate the association between maxillary canine impaction and non-syndromic hypodontia, and to explore the contribution of specific missing-tooth patterns and craniofacial skeletal characteristics.</div></div><div><h3>Methods</h3><div>A case-control study was conducted using pretreatment orthodontic records from an initial clinical sample of 4078 patients aged 11–21 years, from whom 251 individuals with maxillary canine impaction (cases) and 753 age- and sex-matched controls were finally included. Dental agenesis was assessed for all patients. Statistical analyses included univariate and multivariable binary logistic regression to evaluate the association between impaction and the presence, severity, and patterns of non-syndromic hypodontia, as well as Chi-squared and Fisher's exact tests to explore associations with impaction characteristics.</div></div><div><h3>Results</h3><div>Hypodontia, when including third molars, showed a weak association with maxillary canine impaction (OR<!--> <!-->=<!--> <!-->1.39; 95% CI<!--> <!-->=<!--> <!-->1.00–1.93; <em>P</em> <!-->=<!--> <!-->0.050). In multivariable analysis, the association between the number of missing teeth and maxillary canine impaction varied according to skeletal Class II (OR<!--> <!-->=<!--> <!-->1.42; 95% CI<!--> <!-->=<!--> <!-->1.10–1.84; <em>P</em> <!-->=<!--> <!-->0.007) and skeletal Class III (OR<!--> <!-->=<!--> <!-->2.34; 95% CI<!--> <!-->=<!--> <!-->1.29–4.93; <em>P</em> <!-->=<!--> <!-->0.012), with no significant effects of tooth-specific agenesis patterns or vertical skeletal relationships. Among affected patients, laterality, impaction position, and the presence of local obstacles were not associated with hypodontia.</div></div><div><h3>Conclusions</h3><div>The findings suggest that the severity of non-syndromic hypodontia represents a meaningful predictor of maxillary canine impaction when considered in relation to skeletal malocclusion, whereas individual missing-tooth patterns are insufficient to explain this phenomenon and do not support classical aetiological theories of impaction. This trend may help clinicians identify high-risk patients earlier and refine treatment planning.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101145"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146114600","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":"Treatment outcomes of 3D-printed custom brackets and clear aligners in adolescents and young adults with simple to moderate malocclusions: A retrospective study","authors":"Aliyyah Hamiduddin ,&nbsp;Robert Aszkler ,&nbsp;Stephen Warunek ,&nbsp;William Tanberg ,&nbsp;Thikriat Al-Jewair","doi":"10.1016/j.ortho.2026.101140","DOIUrl":"10.1016/j.ortho.2026.101140","url":null,"abstract":"<div><h3>Objectives</h3><div>The aims of this study were to evaluate the treatment quality, duration and accuracy of 3D-printed custom brackets (LightForce™, LF) and clear aligners (Invisalign®, CA) in comparison to conventional brackets (3M™ Victory Series™, CB).</div></div><div><h3>Methods</h3><div>This retrospective study included 94 subjects who underwent comprehensive orthodontic treatment with one of three modalities: LightForce™ custom brackets (LightForce™, Burlington, MA; LF; <em>n</em> <!-->=<!--> <!-->37), clear aligners (Invisalign®, Align Tech, San Jose, CA; CA; <em>n</em> <!-->=<!--> <!-->33), or conventional brackets (3M™ Victory Series™, Solventum, Saint Paul, MN; CB; <em>n</em> <!-->=<!--> <!-->24). Data were collected at pre-treatment (T0), planned final tooth position via LightPlan or ClinCheck (TP), and immediately post-treatment (T1). Overall treatment quality was evaluated using the ABO Cast-Radiograph evaluation (C-R Eval). Treatment duration was recorded in months. Treatment accuracy was assessed by comparing the planned TP and achieved T1 arch width changes at maxillary and mandibular canines, first premolars and first molars.</div></div><div><h3>Results</h3><div>There was no significant difference in the total C-R Eval scores between the groups. Treatment duration was significantly shorter in the LF (15.89 months) and CA (14.39 months) groups compared to the CB (27.79 months) (<em>P</em> <!-->&lt;<!--> <!-->0.001). There was a significant difference between LF and CA groups in T_P-T₁ of the maxillary inter-canine width (LF<!--> <!-->=<!--> <!-->0.87<!--> <!-->mm, CA<!--> <!-->=<!--> <!-->0.23<!--> <!-->mm, <em>P-Adj</em> <!-->=<!--> <!-->0.013).</div></div><div><h3>Conclusions</h3><div>Treatment quality was comparable between LF, CA and CB in mild to moderate crowding cases. Treatment duration was significantly shorter in LF and CA in comparison to CB. However, variations in provider experience may have influenced treatment outcomes. CA demonstrated accuracy in arch width predictions, whereas LF showed accuracy in predicting maxillary and mandibular inter-premolar and mandibular intermolar widths only.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101140"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146114560","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":"Comparative effectiveness of clear aligners and fixed appliances in orthodontic movement of the anterior teeth in adults: A systematic review","authors":"Pascal Ubuzima ,&nbsp;Eugene Nshimiyimana ,&nbsp;Dimitrios Michelogiannakis ,&nbsp;Christelle Mukeshimana ,&nbsp;Patrick Mazimpaka ,&nbsp;Janvier Habumugisha ,&nbsp;Hakan Turkkahraman ,&nbsp;Hiroshi Kamioka","doi":"10.1016/j.ortho.2025.101084","DOIUrl":"10.1016/j.ortho.2025.101084","url":null,"abstract":"<div><h3>Introduction</h3><div>The aim of this systematic review was to analyse and compare the effectiveness of clear aligners (CAs) and fixed appliances (FAs) in orthodontic movement of the anterior teeth (OMAT) in adults.</div></div><div><h3>Methods</h3><div>A systematic search of studies comparing CAs and FAs in databases such as PubMed, Cochrane Library, Science Direct, Web of Science, Scopus, and Google Scholar was conducted and covered publications up to September 2024. Randomized and non-randomized clinical trials were eligible. Risk of bias assessment was performed using Cochrane's tools for randomized controlled trials (RCTs) and for non-RCTs. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) tool assessed the quality of evidence.</div></div><div><h3>Results</h3><div>Twelve studies were included. Two RCTs presented a low risk of bias, and a moderate risk of bias was found in 10 non-RCTs. The FAs showed superior buccolingual crown translation in 2 studies, while 2 favored CAs, and 2 found no significant differences. Mesiodistal translation was reported to be equal between FAs and CAs in 2 studies. Study results regarding extrusion movements were inconsistent, with 3 studies favouring CAs, and 2 studies FAs, while intrusion was equally effective, with 1 study favouring each. Tipping movements showed mixed results, with 1 study favouring each respective treatment and 2 reporting no significant differences. Torque control was better with FAs in 1 study, while 1 study reported no significant difference.</div></div><div><h3>Conclusion</h3><div>This review shows that the efficacy of vertical OMAT was inconsistent, while FAs appear to offer superior rotation and torque control, based on limited evidence from a small number of studies.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 2","pages":"Article 101084"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419381","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}