European journal of orthodontics最新文献

{"title":"A modified clear twin block appliance for treatment of class II malocclusion: a randomized clinical trial.","authors":"Anosh A Haik, Yassir A Yassir","doi":"10.1093/ejo/cjaf103","DOIUrl":"https://doi.org/10.1093/ejo/cjaf103","url":null,"abstract":"<p><strong>Background: </strong>Skeletal Class II malocclusion is commonly treated with functional appliances, but bulkiness and discomfort usually affect the compliance. Modifications of these appliances using clear thermoplastic materials could improve comfort and esthetics; though clinical evidence remains limited.</p><p><strong>Objective: </strong>To assess the clinical effectiveness of a Modified Twin Block (MTB) appliance, fabricated from 2 mm biocompatible polyethylene terephthalate modified with Glycol (PETG) thermoplastic material, in comparison with the Conventional Twin Block (CTB), for treatment of skeletal Class II due to mandibular retrognathism.</p><p><strong>Subjects and methods: </strong>This multicenter, single-blinded randomized clinical trial included 50 adolescents, at the peak of pubertal growth (CS -3). Patients were randomly assigned to two parallel groups treated with either a CTB or MTB appliance, both incorporating a midline screw for maxillary expansion. Appliances were worn full-time and the expander was activated twice weekly. The records including cephalograms were taken pre- and post-treatment to evaluate skeletal (sagittal and vertical) and soft tissue changes. Dental arch expansion was assessed using standardized 3D digital model superimposition on palatal landmarks, and overjet/overbite changes were clinically recorded. Patient perception was evaluated using a validated questionnaire. Data were analyzed using paired and independent t-tests.</p><p><strong>Results: </strong>All patients completed the trial without dropout. Baseline characteristics were comparable between groups, with no significant differences in 20 out of 24 variables. Both the CTB and MTB groups showed significant improvements in skeletal, soft tissue, and dental parameters post-treatment (P < 0.05). Between-group comparison revealed a statistically significant improvement in ANB angle favoring the MTB group (P = 0.004), while vertical skeletal and soft tissue changes showed no significant differences (P > 0.05). The MTB group also demonstrated a significantly greater overbite reduction (P = 0.005) and higher dental arch expansion (P = 0.001), particularly in the molar region. No significant difference was found in active treatment duration. Patient perception data showed significantly more favorable experiences with the MTB appliance in 13 out of 36 questionnaire items, particularly regarding comfort, hygiene, function, and psychosocial impact.</p><p><strong>Limitations: </strong>Double blinding was not feasible due to clear visual differences between the appliances.</p><p><strong>Conclusions: </strong>The MTB appliance is effective in treating growing patients with skeletal Class II due to mandibular retrognathism and is comparable with slight advantageous results to CTB appliance.</p><p><strong>Trial registration: </strong>NCT06116500.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146200543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional soft tissue evaluation following different maxillary protraction in Class III patient.","authors":"Muhammed Hilmi Buyukcavus, Elif Albayrak, Burak Kale","doi":"10.1093/ejo/cjaf104","DOIUrl":"https://doi.org/10.1093/ejo/cjaf104","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to comparatively evaluate the effects of three different expansion methods [rapid palatal expansion (RPE), modified alternate rapid maxillary expansion and constriction (Alt-RAMEC), and skeletal anchorage (SA)] combined with maxillary protraction (MP) on the soft tissue profile using 3D stereophotogrammetry.</p><p><strong>Methods: </strong>A total of 51 patients aged between 8 and 12 years with Class III malocclusion who were in the growth and development period were included in the study. The patients were divided into three groups according to the expansion technique applied. Pre- and post-treatment soft tissue changes were analyzed using 3D stereophotogrammetric images.</p><p><strong>Results: </strong>Soft tissue measurements revealed significant changes across all groups. Post-treatment volumetric analysis showed significant increases in midface, nasal, and upper lip volumes, alongside reductions in lower lip and chin volumes across all protocols (P < .01). The SA group achieved the highest significant increases in midface (2754 ± 246 mm3), nasal (1156 ± 143 mm3), and upper lip volumes (611 ± 82 mm3) compared with the RPE and Alt-RAMEC groups (P < .01). While alar base width increase was most significant in the RPE group (P < .001), nasal tip protrusion and the greatest decrease in upper lip length and angle were most pronounced in the SA group (P < .05).</p><p><strong>Conclusions: </strong>SA-supported MP offers the potential to more effectively control soft tissue aesthetics by minimizing undesirable dental and vertical skeletal side effects. This method is superior to other traditional approaches in providing predictable and aesthetically pleasing soft tissue changes.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146178650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship of pediatric obstructive sleep apnea with head and neck posture, hyoid bone position and airway dimensions.","authors":"Hande Gorucu-Coskuner, Gediz Aksoz, Ezgi Atik, Bengisu Akarsu-Guven, Tulin Taner","doi":"10.1093/ejo/cjaf106","DOIUrl":"10.1093/ejo/cjaf106","url":null,"abstract":"<p><strong>Objective: </strong>This cross-sectional study aimed to compare head and neck posture, hyoid bone position, and nasal and pharyngeal airway dimensions between orthodontic patients diagnosed with pediatric obstructive sleep apnea (OSA) and those with no risk of OSA.</p><p><strong>Materials and methods: </strong>OSA group included 35 individuals (mean age = 12 ± 2.1 years; 16 female, 19 male) with an apnea-hypopnea index (AHI) greater than 1 confirmed via polysomnography (AHI = 6.3 ± 6.0). The control group included 35 age- and gender-matched individuals with no OSA risk as determined by a score of '0' on the Pediatric Sleep Questionnaire. Measured parameters included head and neck posture angles-cranio-cervical (SN-CVT°, SN-OPT°), cranio-vertical (SN-VER°, NL-VER°, ML-VER°), and cervico-vertical (OPT-VER°, CVT-VER°); hyoid bone position measurements-H-Mp, H-C3, H-Me distances; and airway dimensions-NAS, SPAS, MPAS, IPAS, PNS-U, and Sp1-Sp2. Intergroup comparisons were performed using independent samples t-test or Mann-Whitney U test, and Binary Logistic Regression analysis was performed.</p><p><strong>Results: </strong>There were no statistically significant differences between the groups regarding hyoid bone position or airway dimensions. However, the OSA group exhibited significantly greater cranio-cervical and cranio-vertical angles: SN-CVT (OSA: 111.3°±10.4°; Control: 106.6°±8.0°; P = 0.018), SN-VER (OSA: 103.7°±3.5°; Control: 100.7°±5.4°; P = 0.007), and NL-VER (OSA: 95.4°±3.8°; Control: 92.8°±5.0°; P = 0.018). ANB and NL-VER angles had significant effects on the groups.</p><p><strong>Conclusion: </strong>Pediatric patients with OSA, aged 9 to 16, demonstrated increased cranio-cervical and cranio-vertical angles, indicating a more extended head posture. This postural adaptation may serve as a clinical indicator of OSA in the pediatric orthodontic population.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12708333/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145767515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nasal airway in obstructive sleep apnea: a supine magnetic resonance imaging study.","authors":"Fan-Bo Kong, Sijia Mi, Guili Deng, Haiyuan Chen, Tao Jiang","doi":"10.1093/ejo/cjag002","DOIUrl":"https://doi.org/10.1093/ejo/cjag002","url":null,"abstract":"<p><strong>Objective: </strong>Obstructive sleep apnea (OSA) is characterized by recurrent collapses of the upper airway during sleep. Although nasal obstruction has been identified as an independent risk factor for OSA and extensively studied, the relationship between nasal anatomical structures and OSA remains poorly understood. The objective of this study was to determine the relationship between the nasal cross-sectional area (CSA), as measured by magnetic resonance imaging in the supine position, and the presence of OSA, as well as to investigate its correlation with OSA severity.</p><p><strong>Methods: </strong>In this cross-sectional study, a total of 111 participants were enrolled, comprising 88 patients with OSA and 23 healthy controls. All participants underwent polysomnography to determine their apnea-hypopnea index (AHI). Subsequently, MRI scans were performed in the supine position to measure CSA at distances of 1.5, 2, 2.5, 3, 4, 5, and 6 cm posterior to the most anterior point of the nasal cavity. Participants were stratified into groups based on AHI severity, and statistical analyses were conducted to determine the correlation between CSA measurements and the AHI.</p><p><strong>Results: </strong>Significant intergroup differences were observed in the minimum CSA at the 2.5 and 4.0 cm levels. No difference was found in the sum of nasal CSA at any level. Furthermore, no group differences were found in either nasal cavity volume or surface area. A comparison between healthy individuals and OSA patients revealed that advanced age, a higher body mass index, male sex, and a reduced total minimum nasal cross-sectional area (TMCA) were independent and significant predictors of OSA.</p><p><strong>Conclusion: </strong>TMCA was identified as a predisposing factor for OSA, but it was not found to be associated with the severity of the condition. Furthermore, long-term, severe OSA may contribute to an enlargement of the CSA.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146118282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of fixed orthodontic appliances on gingival aesthetics of the anterior maxillary dentition.","authors":"Jadbinder Seehra, Andrew T DiBiase, Aws Alani, Iryna Kocherhina, Catherine M Hershaw, Andrea Cunningham, Spyridon N Papageorgiou, Tim Newton, Martyn T Cobourne","doi":"10.1093/ejo/cjaf108","DOIUrl":"https://doi.org/10.1093/ejo/cjaf108","url":null,"abstract":"<p><strong>Background: </strong>Quantification of the effect of orthodontic treatment on the gingival mircroaesthetics is lacking. The aim of this exploratory investigation was to investigate the effect of fixed orthodontic appliance therapy on gingival aesthetics associated with the anterior maxillary dentition.</p><p><strong>Materials and methods: </strong>A bespoke gingival aesthetic criterion was used to assess 150 sets of pre- and post-treatment intra-oral photographs from a consecutively treated patient sample who had completed fixed appliance therapy. Five assessors rated the images assigning a score per criterion. Reliability of the method was assessed with concordance correlation coefficient (CCC) and Bland-Altman limits of agreement (LOA). Differences by timepoint, assessors, and treatment characteristics were assessed with statistical tests or generalized linear models at α = 5%.</p><p><strong>Results: </strong>In the sample of 150 cases, the most common pre-treatment incisor classification was Class III (n = 57) followed by Class II Div 1 (n = 52). The majority of cases were treated on a nonextraction basis (n = 95) and involved orthodontic appliances only (n = 134). The CCC and LOA values for the aesthetic gingival criterion ranged from good-excellent. Average aesthetic summary scores differed from before pre-treatment [median = 33.9; interquartile range (IQR) = 24.5-45.2] and post-treatment (median = 75.8; IQR = 65.2-85.3) to a significant degree (mean difference = 38.5; standard deviation = 17.8; P < 0.001). No difference in aesthetic criterion points score was evident for treatment plan (nonextraction vs extraction) (P = 1.00) and treatment type (orthodontic only or orthognathic) (P = 0.52). Considerable variation in summary scores among assessors with different specialty/grades was seen (P < 0.001).</p><p><strong>Limitations: </strong>Gingival aesthetic ratings were undertaken in isolation without the assessment of specific contributions made by soft and hard tissues, and changes in tooth position.</p><p><strong>Conclusions: </strong>Orthodontic treatment with fixed appliances can have a positive effect on the gingival margin, gingival zenith, gingival embrasure, connector area, and overall rating of gingival symmetry of the anterior maxillary teeth. However, aesthetic ratings depend on the assessor.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145888186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smile shape and self-perceived smile attractiveness.","authors":"Gabriella Coppola, Nikolaos Gkantidis, Carlalberta Verna, Demetrios Halazonetis, Georgios Kanavakis","doi":"10.1093/ejo/cjag005","DOIUrl":"https://doi.org/10.1093/ejo/cjag005","url":null,"abstract":"<p><strong>Aim: </strong>To assess the effect of smile shape on self-perceived smile attractiveness in young adults.</p><p><strong>Methods: </strong>The study included 601 participants (393 females, 208 males). Three-dimensional smiling facial images were captured using the 3dMD stereophotogrammetry system (3dMD, Atlanta, USA). Participants rated their smile attractiveness using a visual analogue scale (0-100). Smile shape was described with 62 landmarks, which were aligned using Generalized Procrustes Superimposition to extract shape coordinates. Principal component analysis (PCA) was used to reduce dimensionality and derive shape PCs. The association between smile shape and self-perceived smile attractiveness was examined using multivariate regression models, performed separately for females and males. Allometric effects were assessed using standardized residuals of shape PCs. Statistical significance was set at P < .05.</p><p><strong>Results: </strong>In males, no statistically significant association was found between smile shape and self-perceived smile attractiveness (P = .6; η2 = 0.065). In females, a significant association was observed (P = .001; η2 = 0.093), with more attractive smiles displaying greater width, height, and curvature. Allometric analysis revealed a strong effect of size on shape (η2 = 0.468; P < .001). After controlling for this effect, the association in females was no longer statistically significant (P = .08), although a moderate effect size persisted (η2 = 0.069), indicating that the effect remained but was statistically less robust.</p><p><strong>Conclusion: </strong>Smile shape significantly affects self-perceived attractiveness, particularly in females, with effects related to proportionally larger smiles. This finding highlights known sex-based differences in aesthetic self-perceptions, as well as the preference for broader smiles.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146141409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional appliances and airway outcomes in Class II malocclusion: an umbrella review of evidence certainty and clinical credibility.","authors":"Harini Allu, Prasad Mandava, Gowri Sankar Singaraju, Vivek Reddy G, Yamini Priyanka Js","doi":"10.1093/ejo/cjaf101","DOIUrl":"https://doi.org/10.1093/ejo/cjaf101","url":null,"abstract":"<p><strong>Background: </strong>Functional appliances are widely used for Class II correction in growing patients, and their potential influence on upper-airway dimensions has been examined in several systematic reviews. However, methodological quality, overlap of primary studies, and credibility of evidence remain uncertain.</p><p><strong>Objectives: </strong>To synthesize evidence from published systematic reviews and meta-analyses on functional appliances and airway dimensions in growing Class II patients, and to evaluate methodological quality, overlap, and credibility of evidence.</p><p><strong>Search methods: </strong>Comprehensive electronic searches of PubMed, Embase, Cochrane Library, Scopus, Web of Science, and supplementary sources identified eligible systematic reviews up to August 2025.</p><p><strong>Selection criteria: </strong>Systematic reviews or meta-analyses assessing airway changes after functional-appliance therapy in normal growing Class II patients with true external or growth-matched controls were included.</p><p><strong>Data collection and analysis: </strong>Four systematic reviews encompassing 39 unique primary studies were retained. Methodological quality was assessed using the Joanna Briggs Institute (JBI) checklist and the Risk of Bias in Systematic Reviews (ROBIS) tool; study overlap was quantified by the Corrected Covered Area (CCA); credibility was evaluated using Ioannidis' classification; and evidence certainty was graded with the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) tool.</p><p><strong>Results: </strong>Meta-analyses revealed significant oropharyngeal enlargement: superior pharyngeal space + 1.73 mm (95% CI 1.13-2.32), middle + 1.52 mm (95% CI 1.09-1.96), and inferior + 1.25 mm (95% CI 0.66-1.84). Oropharyngeal airway volume increased by 2356 mm³ (95% CI 1276-3436) and nasopharyngeal volume by 382 mm³ (95% CI 141-623). Changes in posterior airway space (+0.52 mm, 95% CI -0.20 to 1.24) and upper-airway thickness were not significant. ROBIS classified four reviews as low-risk and two as high-risk. Study overlap was moderate (CCA = 6.8%). By Ioannidis' criteria, most outcomes were weak (Class IV) or non-significant. GRADE certainty was low to very low, mainly due to risk of bias, heterogeneity (I² up to 90%), and imprecision.</p><p><strong>Conclusions: </strong>Functional appliances yield modest yet statistically significant enlargement of oropharyngeal airway dimensions in growing Class II patients, with the effect being more pronounced with removable appliances. Nevertheless, evidence credibility remains weak, and overall certainty is low. Results should be interpreted with caution, and future studies should employ prospective, volumetric, growth-controlled, and standardized protocols.</p><p><strong>Registration: </strong>This umbrella review was registered with PROSPERO (CRD42023408859).</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145773907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postoperative craniocervical change after bilateral sagittal split ramus osteotomy in Classes II and III: predictive role of mandibular rotation and tongue-hyoid coupling.","authors":"Boosana Kaboosaya, Nattavee Wangpiriyapanish, Napat Damrongsirirat, Atiphan Pimkhaokham","doi":"10.1093/ejo/cjaf111","DOIUrl":"https://doi.org/10.1093/ejo/cjaf111","url":null,"abstract":"<p><strong>Objective: </strong>This study aims to evaluate postoperative craniocervical changes after bilateral sagittal split ramus osteotomy (BSSRO), to test mandibular translation and rotation as predictors, and to explore their coupling with tongue and hyoid adaptations.</p><p><strong>Materials and methods: </strong>A total of 210 patients (88 males, 122 females; 18-58 years) were equally divided into skeletal Classes I-III. Cephalograms in natural head posture were obtained pre- and postoperatively. Craniocervical change (ΔNSL/OPT) was the primary outcome. Mandibular translation (ΔGo-Me) and rotation (ΔFH-MP) served as predictors, with tongue and hyoid variables as secondary outcomes. Reliability was assessed using intraclass correlation coefficients (ICCs). Statistical analyses included analysis of variance (ANOVA), correlation, and multivariable regression.</p><p><strong>Results: </strong>Measurement reproducibility was excellent (ICC > 0.92). Mandibular advancement (Class II) and setback (Class III) produced class-specific changes in ΔGo-Me and ΔFH-MP. Postoperatively, Class II showed cervical flexion (-3.09° ± 7.12°) whereas Class III showed cervical extension (+2.92° ± 5.48°, P < .001). ΔNSL/OPT correlated with ΔFH-MP (r = 0.25, P = .002) and ΔGo-Me (r = 0.17, P = .017), though only ΔFH-MP remained significant in regression (β ≈ 0.47° per 1° rotation). ΔNSL/OPT was most strongly correlated with ΔSNH (r = 0.62, P < .001), indicating coordinated craniocervical-hyoid adaptation. Tongue showed modest lengthening, flattening, and anterior shift across both advancement and setback groups.</p><p><strong>Conclusions: </strong>Cervical extension after BSSRO is primarily driven by mandibular rotation rather than translation, underscoring the clinical importance of incorporating rotational vectors into surgical planning. Coupled tongue-hyoid adaptations reflect early neuromuscular compensation, with potential implications for long-term stability and functional outcomes.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146206336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Head posture before and after the correction of unilateral functional posterior crossbite in growing children: a prospective controlled clinical trial.","authors":"Mustafa Al-Yassary, Kelly Billiaert, Fara Beltrami, Stavros Kiliaridis, Gregory S Antonarakis","doi":"10.1093/ejo/cjaf096","DOIUrl":"10.1093/ejo/cjaf096","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the impact of unilateral functional posterior crossbite, as well as its correction, on head posture in growing children in comparison to children without crossbite.</p><p><strong>Methods: </strong>A prospective longitudinal controlled clinical trial was carried out including 40 children aged 8-11 years, assigned into a treatment group with unilateral functional posterior crossbite treated with maxillary expansion (n = 20) and an untreated control group without malocclusion (n = 20). Head posture was assessed pre-treatment (or pre-follow-up) (T0) and 2.5 years post-treatment (or post-follow-up) (T1) using an inertial measurement unit (IMU) measuring pitch (forward/backward head inclination), roll (left/right tilting), and yaw (left/right head rotation). Dominant-eye determination was performed using the Battista Della Porta aiming test to evaluate its potential influence on head posture.</p><p><strong>Results: </strong>No significant differences in head posture were observed between the crossbite and control groups pre- (T0) or post-treatment (T1). Within the crossbite group, an increased pitch post-treatment was noted (P = .008), although not significant after Bonferroni correction. No significant changes were found in the roll or yaw axes neither between groups nor across time points. Eye dominance influenced yaw orientation, with right-eye-dominant participants showing higher yaw angles compared to left-eye-dominant participants (3.61+/-3.46° versus -1.47+/- 3.46°; P < .001).</p><p><strong>Conclusion: </strong>The presence of a unilateral functional posterior crossbite does not appear to influence head posture, when compared with a control group without crossbite. Furthermore, the orthodontic correction of unilateral functional posterior crossbite does not seem to alter head posture. The results question a cause-effect relationship between crossbite and head posture. The study did identify however a significant influence of eye dominance on head posture.</p>","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12711365/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145773912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Reporting quality of randomized controlled trial abstracts presented at the European Orthodontic Society Congress between 2015-2024: has there been an improvement over time?","authors":"","doi":"10.1093/ejo/cjaf098","DOIUrl":"https://doi.org/10.1093/ejo/cjaf098","url":null,"abstract":"","PeriodicalId":11989,"journal":{"name":"European journal of orthodontics","volume":"47 6","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145721326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}