Journal of the World Federation of Orthodontists最新文献

{"title":"How satisfied are our patients?","authors":"Vinod Krishnan (Editor-in-Chief)","doi":"10.1016/j.ejwf.2025.02.003","DOIUrl":"10.1016/j.ejwf.2025.02.003","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 65-66"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781389","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":"Automated dentition segmentation: 3D UNet-based approach with MIScnn framework","authors":"Min Seok Kim ,&nbsp;Elie Amm ,&nbsp;Goli Parsi ,&nbsp;Tarek ElShebiny ,&nbsp;Melih Motro","doi":"10.1016/j.ejwf.2024.09.008","DOIUrl":"10.1016/j.ejwf.2024.09.008","url":null,"abstract":"<div><h3>Introduction</h3><div>Advancements in technology have led to the adoption of digital workflows in dentistry, which require the segmentation of regions of interest from cone-beam computed tomography (CBCT) scans. These segmentations assist in diagnosis, treatment planning, and research. However, manual segmentation is an expensive and labor-intensive process. Therefore, automated methods, such as convolutional neural networks (CNNs), provide a more efficient way to generate segmentations from CBCT scans.</div></div><div><h3>Methods</h3><div>A three-dimensional UNet-based CNN model, utilizing the Medical Image Segmentation CNN framework, was used for training and generating predictions from CBCT scans. A dataset of 351 CBCT scans, with ground-truth labels created through manual segmentation using AI-assisted segmentation software, was prepared. Data preprocessing, augmentation, and model training were performed, and the performance of the proposed CNN model was analyzed.</div></div><div><h3>Results</h3><div>The CNN model achieved high accuracy in segmenting maxillary and mandibular teeth from CBCT scans, with average Dice Similarity Coefficient values of 91.83% and 91.35% for maxillary and mandibular teeth, respectively. Performance metrics, including Intersection over Union, precision, and recall, further confirmed the model's effectiveness.</div></div><div><h3>Conclusions</h3><div>The study demonstrates the efficacy of the three-dimensional UNet-based CNN model within the Medical Image Segmentation CNN framework for automated segmentation of maxillary and mandibular dentition from CBCT scans. Automated segmentation using CNNs has the potential to deliver accurate and efficient results, offering a significant advantage over traditional segmentation methods.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 84-90"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142570119","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":"Assessment of coated orthodontic miniscrews with chlorhexidine hexametaphosphate antimicrobial nanoparticles: A randomized clinical trial","authors":"Ahmed Ali Al-Hilaly ,&nbsp;Akram Faisal Alhuwaizi","doi":"10.1016/j.ejwf.2024.09.006","DOIUrl":"10.1016/j.ejwf.2024.09.006","url":null,"abstract":"<div><h3>Background</h3><div>Using miniscrews to control anchorage made the application of force for various orthodontic treatment approaches easier and increased their effectiveness. Some problems may occur during the use of miniscrews, such as peri‑implant mucositis, mobility, postoperative pain, and failure. This study compared the success rate of miniscrews coated with chlorhexidine hexametaphosphate antimicrobial nanoparticles with that of uncoated miniscrews.</div></div><div><h3>Methods</h3><div>In a double-blind randomized controlled clinical trial using a split-mouth design, 80 miniscrews were inserted symmetrically into 40 individuals between the maxillary second premolar and first molar. Random allocation software was used to distribute the coated and uncoated miniscrews. The patients were monitored monthly, for a duration of 4 months. The main measure of interest was the success rate of miniscrews, which was assessed throughout follow-up periods of up to 4 months. The secondary objective was the assessment of the mobility of the miniscrews, peri‑implant health, and pain perception. A Wilcoxon signed-rank test and Kaplan–Meier survival analysis were applied to analyze the data.</div></div><div><h3>Results</h3><div><em>Main outcome</em>: After the 4-month follow-up, the success rates of the miniscrews for coated and uncoated samples were 81.3% and 84.4%, respectively, which was a statistically insignificant difference. <em>Secondary outcome:</em> Mobility and peri‑implant health were not statistically different between the coated and uncoated miniscrew groups. Pain intensity was rated higher on the first day, then decreased gradually, diminishing completely on the sixth and seventh day. However, the pain perception between the coated and uncoated miniscrews did not differ statistically.</div></div><div><h3>Conclusions</h3><div>Chlorhexidine-hexametaphosphate nanoparticles did not increase the success rate and stability, nor did they enhance peri‑implant health or affect pain perception during the short observation period.</div></div><div><h3>Trial registration</h3><div>This trial was registered at ClinicalTrials.gov; ID: NCT06124235.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 67-75"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142630079","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":"Lip and incisor changes in patients with different ethnicities treated with extraction versus nonextraction: A cone-beam computed tomography study","authors":"Rahma ElNaghy ,&nbsp;Stephanie Grossman ,&nbsp;Majd Hasanin ,&nbsp;Riyad Al-Qawasmi","doi":"10.1016/j.ejwf.2024.09.009","DOIUrl":"10.1016/j.ejwf.2024.09.009","url":null,"abstract":"<div><h3>Background</h3><div>This study used cone-beam computed tomography (CBCT) via voxel-based superimposition to evaluate lip and incisor changes after orthodontic treatment with four premolar extractions (Ext) versus nonextraction (Non-Ext) among African American (AA) and White (W) patients.</div></div><div><h3>Methods</h3><div>A total of 240 CBCTs of 120 adolescent orthodontic patients with Class I skeletal/dental relationships were included. Patients were initially divided according to treatment, and then each group was subdivided according to patients’ ethnicity (Ext/W = 30, Ext/AA = 30, Non-Ext/W = 30, and Non-Ext/AA = 30). CBCTs were imported into Invivo6 for voxel-based superimposition. Lip and incisor measurements were recorded. Independent <em>t</em> tests and two-way ANOVA were used for statistical assessment.</div></div><div><h3>Results</h3><div>The Non-Ext/W group had a greater increase in all outcome variables compared with the Non-Ext/AA group, with a significant change in volume and position of upper (UL) and lower lips (LL), inclination of upper (U1) and lower incisors (L1), and position of U1. The Ext/AA group had a greater decrease in all measured outcomes compared with the Ext/W group, with significant change in inclination of U1 and L1, and position and volume of LL. W patients had more crowding than AA patients in both treatment approaches. Retraction ratios of 6.5:1 and 2.1:1 were recorded between the U1 and UL positions, and L1 and LL positions, respectively. There were no direct interaction effects between ethnicity and treatment, nor were there any significant effects of ethnicity after controlling for the covariates.</div></div><div><h3>Conclusions</h3><div>Ethnicity alone has no impact on incisor and lip position after treatment. However, ethnicity in the form of initial presentation of malocclusion can have a significant influence.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 76-83"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510001","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 a mandibular second molar into the adjacent atrophic first-molar extraction site with ridge-split technique through clear aligners: A case report","authors":"Jialun Li,&nbsp;Qi Fan,&nbsp;Lu Liu,&nbsp;Shangyou Wen,&nbsp;Xuechun Yuan,&nbsp;Xian He,&nbsp;Wenli Lai,&nbsp;Hu Long","doi":"10.1016/j.ejwf.2024.09.010","DOIUrl":"10.1016/j.ejwf.2024.09.010","url":null,"abstract":"<div><div>This case report describes the successful orthodontic management of a 25-year-old female patient presenting with Class II Division 2 malocclusion, moderate maxillary anterior crowding, and a missing mandibular left first molar. Treatment plan involved extraction of two maxillary first premolars to address crowding and protraction of two mandibular left molars, combined with the strategic use of mini-implants for precise tooth movement control. Ridge-split surgery was adopted to manage alveolar ridge resorption in the edentulous area. This procedure was essential for widening the narrow alveolar ridge, thereby reducing resistance and facilitating the mesial movement of two mandibular left molars. Lingual and labial biomechanics, including linguoincisal elastics and a cantilever system, were utilized to optimize torque control and molar protraction. Clear aligners were employed throughout the treatment phases, navigating challenges such as the closure of extraction spaces and achieving stable buccal interdigitation. The treatment spanned 4 years, using a total of 175 aligners. The initial phase required 66 aligners to close maxillary extraction spaces and the mandibular edentulous space, followed by 52 aligners in the first refinement and 57 aligners in the second refinement phase. Posttreatment evaluations demonstrated successful alignment of dental arches, correction of malocclusion, and enhancement of facial aesthetics. This case highlights the efficacy of integrated orthodontic techniques in achieving comprehensive functional and aesthetic outcomes in complex orthodontic cases.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 111-122"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142630094","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":"In vitro physical properties and clinical stability of reused orthodontic miniscrews: A systematic review and meta-analysis","authors":"Arezoo Jahanbin ,&nbsp;Farnaz Ziya ,&nbsp;Erfan Bardideh ,&nbsp;Sara Hafez ,&nbsp;Mostafa Abtahi","doi":"10.1016/j.ejwf.2024.09.005","DOIUrl":"10.1016/j.ejwf.2024.09.005","url":null,"abstract":"<div><h3>Background</h3><div>While orthodontic miniscrews have been widely documented for their successful application, limited research exists on the stability and effectiveness of reused miniscrews.</div><div>This systematic review aims to evaluate the stability and effectiveness of reused miniscrews in orthodontic treatments.</div></div><div><h3>Methods</h3><div>An electronic search was conducted for studies published up to February 2024 across MEDLINE, Web of Science, EMBASE, Scopus, and Cochrane CENTRAL. Additionally, gray literature sources and manual searches of prominent orthodontic journals from 2010 to 2023, were also examined.</div><div>Studies that investigated the use of miniscrews after retrieval and sterilization involving both in vitro studies and clinical trials were included.</div></div><div><h3>Results</h3><div>From 946 searched studies, 18 were finally included in our review. Thirteen studies investigated retrieved and sterilized miniscrews, while five examined unused and sterilized miniscrews to isolate the effects of sterilization. After performing a meta-analysis on in vitro studies, no significant difference in insertion, removal, or fracture torque between retrieved and unretrieved miniscrews was found, though sterilized miniscrews had a statistically significant increase in insertion torque without affecting fracture resistance. Meta-analysis of clinical studies revealed that retrieved miniscrews exhibited a significantly higher failure rate with a risk ratio of 0.46 (95% confidence interval = 0.24, 0.69), indicating a higher likelihood of failure on reuse.</div></div><div><h3>Conclusion</h3><div>There were no significant differences in insertion and fracture torque between new and reused miniscrews. However, reused miniscrews were associated with a higher failure rate. This outcome may be influenced by factors such as sterilization methods, insertion technique, and patient-specific anatomical considerations.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 2","pages":"Pages 97-110"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142548169","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":"Comparing the efficacy of heat-activated NiTi (HANT) versus conventional NiTi archwires: A systematic review and meta-analysis","authors":"Erfan Bardideh ,&nbsp;Mahsa Ghorbani ,&nbsp;Hooman Shafaee ,&nbsp;Keyvan Sohrabi ,&nbsp;Helia Samini","doi":"10.1016/j.ejwf.2024.08.001","DOIUrl":"10.1016/j.ejwf.2024.08.001","url":null,"abstract":"<div><h3>Objective</h3><div>To assess the effectiveness of heat-activated NiTi (HANT) wires compared to NiTi wires during orthodontic alignment, through a systematic review and meta-analysis.</div></div><div><h3>Search Methods</h3><div>We comprehensively searched databases up to January 2024, including MEDLINE, Web of Science, EMBASE, Scopus, and Cochrane's CENTRAL, without language or date restrictions.</div></div><div><h3>Selection Criteria</h3><div>Clinical studies aligning with the PICO question were included, and their bias risk was evaluated using the Cochrane Risk of Bias 2.0 tool.</div></div><div><h3>Data Collection and Analysis</h3><div>Data were collected using custom forms, and a meta-analysis was performed using random-effects inverse variance. Primary outcome was Little's Irregularity Index (LII) changes. Secondary outcomes were pain intensity and root resorption.</div></div><div><h3>Results</h3><div>Thirteen clinical studies were reviewed, with nine included in the meta-analysis. No significant differences were observed in LII changes during the first four months, with similar findings in the first, second and third months. In the fourth month, NiTi wires exhibited higher reductions. Pain intensity did not differ between groups on the first or the seventh day. No significant difference in root resorption was found between the two groups.</div></div><div><h3>Conclusions</h3><div>HANT and conventional NiTi wires showed comparable effectiveness in reducing LII, pain levels, and root resorption during the orthodontic alignment phase. While HANT wires may entail higher costs, their ease of insertion and ligation offer practical advantages. Ultimately, choosing between wire types should consider individual patient needs and clinician preferences.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 1","pages":"Pages 34-45"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356059","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":"Skeletal and dental open bite treatment using clear aligners and orthodontic miniscrew-anchored fixed appliances in permanent dentition: A systematic review","authors":"Eugene Nshimiyimana ,&nbsp;Pascal Ubuzima ,&nbsp;Christelle Mukeshimana ,&nbsp;Dimitrios Michelogiannakis ,&nbsp;Dieudonne Mbyayingabo ,&nbsp;Eric Mugabo ,&nbsp;Dan Gakunzi ,&nbsp;Evariste Ndanga ,&nbsp;Patrick Mazimpaka ,&nbsp;Janvier Habumugisha","doi":"10.1016/j.ejwf.2024.09.003","DOIUrl":"10.1016/j.ejwf.2024.09.003","url":null,"abstract":"<div><h3>Background</h3><div>The objective was to systematically review studies assessing the efficacy of clear aligner therapy (CAT) and miniscrew-anchored fixed appliances (MAFAs) in the correction of skeletal and dental open bite in the permanent dentition.</div></div><div><h3>Methods</h3><div>A literature search was conducted across different databases, including PubMed, Cochrane Library, Science Direct, Web of Science, Medline, Scopus and Google Scholar, up to April 2024. Studies were chosen based on prespecified inclusion criteria. The dentoskeletal changes based on lateral cephalometry were evaluated from the included papers. Study selection, data extraction, and risk of bias (RoB) assessment were performed in duplicate. Risk of bias assessment was done using ROBINS-I (Risk of Bias in Non-Randomized Studies of Interventions) and Cochrane RoB 2 tools. GRADE (Grading of Recommendations Assessment, Development and Evaluation) assessed certainty of evidence.</div></div><div><h3>Results</h3><div>Out of the 22 studies that were selected, 13 papers covered MAFAs, while 9 articles focused on CATs. Since the included papers consist of prospective and retrospective observational studies, as well as two randomized controlled trials, the scientific evidence is at a low level. CATs primarily induced posterior teeth intrusion and anterior teeth extrusion, contributing to the reduction of the posterior vertical dimension and improved occlusal contacts. Conversely, MAFAs facilitated significant molars intrusion, and controlled anterior teeth extrusion, effectively addressing both dental and skeletal discrepancies.</div></div><div><h3>Conclusions</h3><div>This review supports the use of MAFAs and CATs for treating skeletal and dental open bite, highlighting their effectiveness and implications for orthodontic practice. The limitations of this study should be considered when interpreting the results.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 1","pages":"Pages 46-63"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510002","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 evaluation of alveolar bone remodeling and root length changes in fixed appliances versus clear aligners: A retrospective cohort study on skeletal Class III malocclusion treatment","authors":"Xiaoya He,&nbsp;Xiaojing Li,&nbsp;Xingyu Zhou,&nbsp;Yunhui Xia,&nbsp;Jiaqiang Liu ,&nbsp;Lixia Mao","doi":"10.1016/j.ejwf.2024.08.004","DOIUrl":"10.1016/j.ejwf.2024.08.004","url":null,"abstract":"<div><h3>Background</h3><div>The retrospective study examined changes in the root length and alveolar bone surrounding maxillary incisors in patients with skeletal Class III malocclusion treated by surgical orthodontic treatment with either fixed appliances (FAs) or clear aligners (CAs).</div></div><div><h3>Methods</h3><div>A total of 60 subjects were divided based on appliance type used. Cone beam computed tomography scans were taken at three stages: before treatment, after presurgical orthodontic treatment, and post-treatment for both groups. Vertical alveolar bone level and horizontal alveolar bone thickness (ABT) were measured at four heights (3, 6, and 9 mm from the cementoenamel junction, and the root apex), along with root length, at these time points.</div></div><div><h3>Results</h3><div>Both groups showed a decrease in root length, with the CA group experiencing a significantly smaller reduction (0.4 ± 0.79 mm) compared with the FA group (0.64 ± 0.8 mm; <em>P</em> = 0.02). The FA group demonstrated more significant reduction in palatal ABT (<em>P</em> &lt; 0.05) and greater root resorption, whereas the CA group exhibited considerable labial marginal bone resorption (<em>P</em> = 0.007) and a notable decrease in labiolingual inclination (<em>P</em> = 0.042).</div></div><div><h3>Conclusions</h3><div>The findings suggest that FA and CA might lead to decreased ABT and significant root resorption, with FA therapy likely resulting in more pronounced effects. Both modalities led to notable vertical bone loss, particularly, on the labial side of the maxillary incisors in the CA group during postsurgical orthodontic treatment. Preventing iatrogenic deterioration of periodontal support surrounding the incisors is crucial during presurgical and postsurgical phases.</div></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 1","pages":"Pages 12-19"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510000","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":"From Artificial intelligence (AI) to Artificial General Intelligence (AGI) – the road ahead","authors":"Vinod Krishnan (Editor-in-Chief)","doi":"10.1016/j.ejwf.2025.01.002","DOIUrl":"10.1016/j.ejwf.2025.01.002","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"14 1","pages":"Pages 1-2"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102156","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}