International Orthodontics最新文献

{"title":"Expert consensus-derived evaluation criteria for orthodontic treatment outcomes using a novel ranking method: A retrospective dental cast analysis study","authors":"Huanhuan Chen,&nbsp;Hanwei Zheng,&nbsp;Yue Lai,&nbsp;Wei Li,&nbsp;Chenda Meng,&nbsp;Tianyi Wang,&nbsp;Guangying Song,&nbsp;Bing Han,&nbsp;Tianmin Xu","doi":"10.1016/j.ortho.2025.101057","DOIUrl":"10.1016/j.ortho.2025.101057","url":null,"abstract":"<div><h3>Objective</h3><div>This retrospective expert consensus study (PKUSSIRB No.202058145) aimed to establish expert consensus-derived evaluation criteria for orthodontic treatment outcomes using the Merge Ranking Method on post-treatment dental casts.</div></div><div><h3>Material and methods</h3><div>From patients treated at the Department of Orthodontics from January 2018 to December 2022, 216 cases were randomly selected for evaluation by 65 orthodontic experts using the Merge Ranking Method. Concurrently, nine objective indicators of the 216 post-treatment dental casts were measured by three researchers. The consistency analysis of experts’ subjective evaluation and researchers’ objective measurement was conducted, respectively. Through subjective-to-objective correlation analysis and regression analysis, the objective indicators significantly correlated with experts’ subjective evaluations were selected, their weights were determined, and the threshold values of grading evaluation were screened.</div></div><div><h3>Results</h3><div>The 65 orthodontic experts demonstrated: (1) moderate pairwise consistency (mean Spearman's ρ<!--> <!-->=<!--> <!-->0.560, 95% bootstrap CI: 0.556-0.564), (2) significant group-level concordance across two independent panels (Kendall's W<!--> <!-->=<!--> <!-->0.544–0.606, all <em>P</em> <!-->&lt;<!--> <!-->0.001), and (3) near-perfect cross-panel reliability for 24 overlapping cases (Kendall's τ-b<!--> <!-->=<!--> <!-->0.833–0.880, <em>P</em> <!-->&lt;<!--> <!-->0.001), confirming panel homogeneity for subsequent analyses. Inter-rater reliability among the three researchers showed excellent consistency (mean ICC<!--> <!-->=<!--> <!-->0.835, 95% CI: 0.788–0.882, range: 0.736–0.920), paralleled by high intra-rater reliability (mean ICC<!--> <!-->=<!--> <!-->0.832, 95% CI: 0.806–0.858, range: 0.715–0.948) across all 216 cases. Six objective indicators (occlusal relationship, overbite, alignment, overjet, occlusal contact, and buccal-lingual inclination) significantly predicted expert evaluations in a regression model (cumulative R² <!-->=<!--> <!-->0.598, <em>P</em> <!-->&lt;<!--> <!-->0.001). The threshold values for grading orthodontic treatment outcomes as Excellent, Good, Fair, Poor, and Worst were screened to be 1.846, 2.454, 3.492, and 4.312, respectively.</div></div><div><h3>Conclusions</h3><div>This expert consensus study demonstrated moderate consistency in subjective orthodontic outcome evaluation, with the occlusal relationship emerging as the primary quality determinant. The developed Merge Ranking Method addressed conventional ranking limitations through its innovative two-stage approach: initial segmented evaluation reduced expert fatigue, while subsequent dynamic adjustments improved borderline case classification.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"24 1","pages":"Article 101057"},"PeriodicalIF":1.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128379","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":"Quality of occlusal outcome in adult patients with posterior crossbite treated with completely customized lingual appliances and CAD/CAM archwires for maxillary expansion and mandibular compression compared to adult Class I patients: A retrospective study","authors":"Yann Janssens ,&nbsp;Heike Siekmann ,&nbsp;Pierre Canal ,&nbsp;Patrick F. Foley ,&nbsp;Lara Bettenhäuser-Hartung ,&nbsp;Jonas Q. Schmid","doi":"10.1016/j.ortho.2025.101040","DOIUrl":"10.1016/j.ortho.2025.101040","url":null,"abstract":"<div><h3>Purpose</h3><div>There is a lack of evidence regarding whether non-surgical crossbite correction leads to compromised occlusal outcomes. The aim of this study was to objectively evaluate the quality of the occlusal outcome and the transverse correction after non-surgical crossbite correction in adults compared to adult patients with no pretreatment crossbite.</div></div><div><h3>Material and methods</h3><div>This retrospective study included 80 adult patients treated consecutively with completely customized lingual appliances (CCLAs) between 2019 and 2021. Crossbite correction was performed with CAD/CAM expansion archwires in the maxilla and compression archwires in the mandible. Occlusal outcome was evaluated using the American Board of Orthodontics (ABO) Model Grading System (MGS), and transverse metric measurements were performed, both on plaster models before treatment (T1), on the set-up models (T2A) and after debonding (T2B).</div></div><div><h3>Results</h3><div>From a total of 1098 patients debonded during the observation period, 40 patients (f/m 30/10, mean age 33.6<!--> <!-->±<!--> <!-->10.9<!--> <!-->years) with unilateral or bilateral crossbite were enrolled in the crossbite group. The matched non-crossbite control group consisted of 40 Class I patients (f/m 30/10, mean age 30.7<!--> <!-->±<!--> <!-->9.1<!--> <!-->years). No statistically significant difference was observed between the crossbite and non-crossbite groups regarding the total ABO score at T2B (20.7 vs. 18.8, <em>p</em> <!-->&gt;<!--> <!-->0.05), despite the malocclusion being significantly more severe in the crossbite group at T1 (68.1 vs. 41.0, <em>p</em> <!-->&lt;<!--> <!-->0.001). In both groups, 38 out of 40 patients (95%) would have passed the ABO examination (total score at T2B<!--> <!-->≤<!--> <!-->25). All crossbites were completely corrected at T2B, with a mean total transverse correction of 6.7<!--> <!-->±<!--> <!-->2.3<!--> <!-->mm (3.2<!--> <!-->±<!--> <!-->2.1<!--> <!-->mm maxillary expansion, 3.5<!--> <!-->±<!--> <!-->2.4<!--> <!-->mm mandibular compression).</div></div><div><h3>Conclusion</h3><div>Non-surgical crossbite correction did not lead to compromised occlusal results. CCLAs in combination with CAD/CAM expansion and compression archwires can correct posterior crossbites successfully in adult patients. The final occlusal outcome can be of a similar high quality in crossbite and non-crossbite patients.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101040"},"PeriodicalIF":1.8,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144696641","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 bibliometric analysis of clear aligner therapy research articles published over 5 years – 2020–2024","authors":"Maurice J. Meade,&nbsp;Ting-Han Lin,&nbsp;Tony Weir","doi":"10.1016/j.ortho.2025.101039","DOIUrl":"10.1016/j.ortho.2025.101039","url":null,"abstract":"<div><h3>Objective</h3><div>To identify and evaluate research articles regarding clear aligner therapy (CAT) published between 2020 and 2024 inclusive.</div></div><div><h3>Methods</h3><div>A systematic strategy was employed to search the Web of Science Core Collection (Clarivate Analytics, Philadelphia, Pa) and the Incites Journal Citation Reports (Clarivate Analytics) databases for records regarding CAT-related articles published between 2020 and 2024 inclusive. Authorial and journal metrics and information regarding study type were documented.</div></div><div><h3>Results</h3><div>A total of 975 articles satisfied inclusion criteria and were evaluated. The number of CAT-related publications more than quadrupled from 2020 (<em>n</em> <!-->=<!--> <!-->84) to 2024 (<em>n</em> <!-->=<!--> <!-->341). Articles were published in a total of 166 journals or other publication sources. The American Journal of Orthodontics (<em>n</em> <!-->=<!--> <!-->100; 10.3%) and the Angle Orthodontist (<em>n</em> <!-->=<!--> <!-->56; 5.7%) are the journals in which CAT-related research were mostly published. Both journals recorded the joint highest number of places (<em>n</em> <!-->=<!--> <!-->6; 20%) in the list of top 50 cited articles published within the timeframe. The mean (SD) number of authors per article was 5.3 (2.3) [Maximum 25; Minimum 1], with first authors being affiliated to a total of 52 countries. China is the country of affiliation most frequently reported by first authors (<em>n</em> <!-->=<!--> <!-->198; 20.3%) followed by Italy (<em>n</em> <!-->=<!--> <!-->161; 16.5%). Retrospective observational (<em>n</em> <!-->=<!--> <!-->196; 20.1%) and in vitro studies (<em>n</em> <!-->=<!--> <!-->190; 19.5%) were the two most common study types with 2.6% (<em>n</em> <!-->=<!--> <!-->25) being randomised clinical trials.</div></div><div><h3>Conclusion</h3><div>The findings will provide insight for scholars and clinicians regarding current research trends and identify research methodologies which may help determine the nature of future studies.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101039"},"PeriodicalIF":1.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655603","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":"Stabilization splint combined with multiloop edgewise archwire for treatment of skeletal Class III open bite malocclusion with temporomandibular disorders: A case report with a 6-year follow-up","authors":"Chengjing Xu ,&nbsp;Dongsheng Song ,&nbsp;Jingzheng Yi ,&nbsp;Shaotai Wang ,&nbsp;Yue Sun ,&nbsp;Yu Chen ,&nbsp;Huan Jiang ,&nbsp;Min Hu","doi":"10.1016/j.ortho.2025.101038","DOIUrl":"10.1016/j.ortho.2025.101038","url":null,"abstract":"<div><div>This case report illustrates the treatment of a 17-year-old male patient characterized by an anterior open bite, skeletal Class III malocclusion, mandibular deviation, and severe temporomandibular joint symptoms. Given the complexity of the patient's condition, a strategic treatment approach was employed. Stabilization splint was used initially for a duration of 9 months to alleviate TMJ symptoms and repositioning the condyle. Through model analysis on the articulator pretreatment, we found a worsening of his V-shape open bite due to occlusal interference in molars. The patient refused the surgery, so the multiloop edgewise archwire treatment was provided to upright the molars and eliminate occlusal interference. After 26 months of treatment, a functional and aesthetic occlusion, and a relatively well-balanced facial profile were established. After a 6 years post-treatment follow-up, the results of this case have demonstrated long-term stability.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101038"},"PeriodicalIF":1.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596512","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":"Diagnostic accuracy of mandibular dental maturation stages for determination of growth spurt compared to the cervical vertebral maturation method: A systematic review and meta-analysis","authors":"Umar Hussain ,&nbsp;Eizza Niaz ,&nbsp;Tooba Zahoor ,&nbsp;Muhammad Abdullah Kamran ,&nbsp;Faizan Ul Hassan ,&nbsp;Rana Faiza ,&nbsp;Ferdous Bukhary ,&nbsp;Ali Hassan Qureshi ,&nbsp;Nikolaos Pandis ,&nbsp;Alessandra Campobasso","doi":"10.1016/j.ortho.2025.101034","DOIUrl":"10.1016/j.ortho.2025.101034","url":null,"abstract":"<div><h3>Objectives</h3><div>To assess the diagnostic accuracy for dental maturation stages of various mandibular teeth in detecting the growth spurt compared to the cervical vertebral maturation (CVM) method.</div></div><div><h3>Methods</h3><div>Eligibility criteria: observational studies assessing dental calcification stages of mandibular teeth for predicting pubertal CVM stages (CS3 and CS4), reporting cross-tabulation and involving healthy growing patients. Information sources: an unrestricted literature search of five databases was conducted up to February 2, 2024. Risk of bias: the quality assessment of the studies was conducted using the Joanna Briggs Institute (JBI). Synthesis of results: random-effects meta-analyses using sensitivity, specificity, and diagnostic odds ratio and their 95% confidence intervals (CIs) were performed, followed by subgroup analyses.</div></div><div><h3>Results</h3><div>Included studies: eighteen observational studies involving 3965 participants (38.91% male) were included. Synthesis of results: the diagnostic odds ratios (DORs) of tooth calcification stages were low, indicating that tooth mineralization provides no useful diagnostic information. Only in stage G of the second molar (DOR: 1.47 [95% CI: 0.49–4.41]) and stage C of the third molar (DOR: 1.7 [95% CI: 0.1–28.9]), the values were slightly higher than one, but they were statistically insignificant.</div></div><div><h3>Discussion</h3><div>Limitations of evidence: most of the studies published on this subject lack cross-tabulation, which prevents the calculation of diagnostic parameters and limits generalizability. The use of CVM as a gold standard can be suboptimal due to several limitations, including inferior inter-observer reliability, unreliability as an indicator of the pubertal growth peak, and retention of pubertal stages in one-fifth of individuals for over 20 years.</div></div><div><h3>Interpretation</h3><div>Tooth calcification stages are not a reliable indicator for predicting the pubertal growth spurt.</div></div><div><h3>Registration</h3><div>PROSPERO (CRD420250654430).</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101034"},"PeriodicalIF":1.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580797","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":"Vertical changes following alignment of palatally displaced maxillary lateral incisors with the Invisalign® appliance: A retrospective study","authors":"Zahraa Albarki,&nbsp;Tony Weir,&nbsp;Maurice J. Meade","doi":"10.1016/j.ortho.2025.101037","DOIUrl":"10.1016/j.ortho.2025.101037","url":null,"abstract":"<div><h3>Introduction</h3><div>The aim of this study was to examine the efficacy of planned vertical positioning of palatally displaced maxillary lateral incisors (PDMLI) in patients treated with an initial series of Invisalign® (Align Technology, Santa Clara, Calif) aligners.</div></div><div><h3>Methods</h3><div>The pre-treatment digital models, and models representing the planned and achieved treatment outcomes of adult patients, prescribed an initial series of Invisalign® aligners were analysed, using Geomagic Control X® (version 2017.0.3; 3D Systems, Rock Hill, SC). Clinical significance was determined according to the American Board of Orthodontics Objective Grading System.</div></div><div><h3>Results</h3><div>A total of 63 patients, comprising 90 PDMLIs, met the inclusion criteria. The mean (SD) difference between the planned and achieved vertical position of PDMLIs following wear of the initial series of aligners was 0.40 (0.5) mm. A clinically significant discrepancy between planned and achieved was observed in 39 (43.3%) PDMLIs. Extrusion was less accurately achieved than intrusion, particularly when accompanied by planned intrusion of the adjacent central incisor. Linear regression analysis showed that age, sex, presence of an attachment, and amount of planned root torque did not significantly influence the accuracy of vertical positioning (<em>P</em> <!-->&gt;<!--> <!-->0.05), whereas planned antero-posterior movement of the PDMLI crown did (<em>P</em> <!-->&lt;<!--> <!-->0.01).</div></div><div><h3>Conclusions</h3><div>The achieved vertical position of PDMLIs following an initial series of Invisalign® treatment differed significantly from the planned position with 43.3% showing a clinically significant difference. The amount of antero-posterior movement was significantly related to the efficacy in achieving the planned vertical movement.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101037"},"PeriodicalIF":1.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570351","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":"Effectiveness and efficiency of indirect bonding techniques: An umbrella review with meta-analysis of the pooled findings","authors":"Ziad Mohamad Alhafi ,&nbsp;Mohammad Y. Hajeer ,&nbsp;Mohammad Khursheed Alam ,&nbsp;Safwan Jaber ,&nbsp;Samer T. Jaber","doi":"10.1016/j.ortho.2025.101036","DOIUrl":"10.1016/j.ortho.2025.101036","url":null,"abstract":"<div><h3>Objectives</h3><div>This umbrella review aimed to critically evaluate the available evidence regarding the accuracy, bond failure rate, working and chairside time, and oral hygiene associated with the indirect bonding of orthodontic brackets.</div></div><div><h3>Material and methods</h3><div>An electronic search was performed using the following databases: Cochrane Library, Scopus®, Web of Science™, EMBASE®, PubMed®, SciELO, and LILACS. The search was for systematic reviews published between January 1968 and January 2025. There were no restrictions on language or date of publication. The process of screening, study selection, data extraction, and methodological quality assessment using A Measurement Tool to Assess Systematic Reviews-2 (AMSTAR-2) was performed by two independent authors. The most reliable evidence was identified using the Jadad decision algorithm. Data were combined and analyzed using random-effects meta-analysis.</div></div><div><h3>Results</h3><div>Out of 66 studies eligible for assessment, 15 were selected for full-text assessment. Seven systematic reviews were included, five of which contained meta-analyses. According to the AMSTAR-2 tool, the included reviews varied in methodological quality from moderate to critically low, with four receiving the lowest rating, thus limiting the overall certainty of the available evidence. The meta-analysis of the pooled findings showed acceptable transfer accuracy for indirect bonding methods, with no significant difference compared to direct bonding. The bracket bond failure rate was also comparable in both techniques. Indirect bonding technique was associated with shorter chairside time but longer total working time. Finally, there is no reliable evidence in the current literature about oral hygiene and indirect bonding.</div></div><div><h3>Conclusions</h3><div>Based on the available evidence from the systematic reviews, within the limitations of the available evidence, direct and indirect bonding techniques did not significantly differ in bracket placement accuracy, bonding failure rate, and oral hygiene. Indirect bonding may require less chairside time but a longer overall working time than direct bonding.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101036"},"PeriodicalIF":1.8,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513961","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 validity and reliability of quantitative Cervical Vertebral Maturation Index (QCVMI): A cross-sectional study","authors":"Abinaya Somaskandhan,&nbsp;Selva Arockiam,&nbsp;Uma Maheswari,&nbsp;Devaki Vijayalakshmi","doi":"10.1016/j.ortho.2025.101035","DOIUrl":"10.1016/j.ortho.2025.101035","url":null,"abstract":"<div><h3>Objective</h3><div>Various methods have been employed to determine skeletal maturity, based on height, weight, frontal sinus development, dental calcification sexual maturation and biomarkers. This study aimed to evaluate the validity and reliability of the Quantitative Cervical Vertebral Maturation Index (QCVMI) in assessing skeletal maturity and compare it with established radiographic maturity indicators, including Fishman's Skeletal Maturity Index, Hassal and Farman's CVMI, Modified MP3 Method, Baccetti's CVMI and correlation between QCVMI and mandibular growth increments.</div></div><div><h3>Material and methods</h3><div>A cross-sectional study was conducted on 120 patients. Lateral cephalograms and hand-wrist radiographs were analysed using Digimizer software. Agreement analysis was performed using Bland-Altman plots, while inter- and intra-rater reliability was assessed using Intraclass Correlation Coefficients (ICC). Lin's Concordance Correlation Coefficient (CCC) and the Bradley-Blackwood test were used for comparative assessment. ROC curve analysis determined diagnostic accuracy, and Pearson correlation coefficients and regression analysis assessed the relationship between QCVMI and mandibular growth increments.</div></div><div><h3>Results</h3><div>QCVMI demonstrated excellent agreement with Fishman's SMI, very good agreement with the Modified MP3, and good agreement with Hassal and Farman's CVMI and Baccetti's CVMI. High intra- and inter-rater reliability confirmed its reproducibility. ROC analysis showed QCVMI had the highest diagnostic accuracy compared to Fishman's SMI. A strong correlation was observed between QCVMI and mandibular growth increments, indicating its predictive efficacy for growth spurts.</div></div><div><h3>Conclusion</h3><div>QCVMI is a valid and reliable skeletal maturity assessment tool, demonstrating strong agreement with established indicators while enhancing objectivity and reproducibility. It effectively predicts mandibular growth spurts, making it valuable for orthodontic treatment planning.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101035"},"PeriodicalIF":1.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144351534","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":"3D longitudinal changes in palatal morphology in growing subjects: A retrospective study","authors":"Judith Oropeza Araque ,&nbsp;Marianne Saade ,&nbsp;Srikant Natarajan ,&nbsp;Bhoomi Kotak ,&nbsp;Melih Motro ,&nbsp;Goli Parsi","doi":"10.1016/j.ortho.2025.101033","DOIUrl":"10.1016/j.ortho.2025.101033","url":null,"abstract":"<div><h3>Introduction</h3><div>The palate plays a crucial role in oral functions such as speech, breathing, and mastication. Understanding its development during growth is essential for diagnosis and treatment planning. This study aimed to assess changes in palatal depth, width, volume, and surface area at ages 8, 12, and 18.</div></div><div><h3>Material and methods</h3><div>This retrospective analysis of palatal characteristics was performed on dental casts obtained at 3 time points: 8, 12, and 18 years of age from untreated cases obtained from the Forsyth Twin Growth Study database collected from 1959–1975. The casts were scanned then eleven landmarks were plotted and a 3D analysis was performed to obtain the anterior and posterior widths and depths, surface area, and volume. Repeated measures ANOVA and posthoc Bonferroni's test were performed to evaluate the changes at different ages.</div></div><div><h3>Results</h3><div>Thirty subjects (16 females and 14 males) were included in this study. There was a statistically significant increase in volume and posterior depth among all age groups for both sexes. Surface area exhibited early growth from age 8 to 12 in males, plateauing after 12 years, while anterior depth significantly increased from ages 12 to 18 in both sexes. Anterior width grew significantly in females during the same period, with no significant changes in males. Posterior width showed a gradual increase with no significant difference between 8 and 12 years or 12 and 18 years.</div></div><div><h3>Conclusions</h3><div>There were consistent incremental changes in the palate's volume and posterior depth. The anterior width of the palate did not show consistent growth, as it only significantly increased dimensions from 12 to 18 years of age in females, whereas the surface area plateaued in males after 12 years, and posterior width changes were non-significant.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101033"},"PeriodicalIF":1.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331134","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":"Protraction of bilateral mandibular molars into the first molar extraction sites using long arm hooks with clear aligners of an adult Class II Division 2 with crowding: A case report","authors":"Hio Cheng Ieong,&nbsp;Yang Cao,&nbsp;Chen Zhou,&nbsp;Weicai Wang","doi":"10.1016/j.ortho.2025.101029","DOIUrl":"10.1016/j.ortho.2025.101029","url":null,"abstract":"<div><div>Protraction of mandibular bilateral second molars to substitute for the extracted first molars is challenging in clear aligner treatment due to biological and biomechanical limitations. This case report presents a 28-year old female patient with poor prognoses for the mandibular bilateral first molars, a mesially impacted mandibular left third molar, and crowding in both the upper and lower arches. After the extraction of mandibular bilateral first molars, long-distance mandibular molar protraction was achieved using clear aligners with a novel protraction appliance, “the long arm hook”. At the end of the treatment, a Class I canine and molar relationship and good root parallelism were achieved. The combination of long arm hooks and clear aligners has proven to be clinically effective for the protraction of mandibular molars, thereby expanding the scope of clear aligner treatment.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101029"},"PeriodicalIF":1.8,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262120","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}