Journal of the World Federation of Orthodontists最新文献

{"title":"Biomechanics of conventional and miniscrew-assisted rapid palatal expansion","authors":"Shivam Mehta ,&nbsp;Sarah Abu Arqub ,&nbsp;Meenakshi Vishwanath ,&nbsp;Madhur Upadhyay ,&nbsp;Sumit Yadav","doi":"10.1016/j.ejwf.2024.03.002","DOIUrl":"10.1016/j.ejwf.2024.03.002","url":null,"abstract":"<div><p>Posterior Crossbite is a common condition resulting because of transverse maxillary deficiency. The growth of the craniofacial complex finishes first in the transverse dimension, followed by sagittal and vertical dimensions. Conventional rapid palatal expansion (RPE) appliances are commonly used to correct transverse maxillary deficiency. Although RPE is efficient in correcting posterior crossbite, it results in dental side effects such as buccal tipping of maxillary molars, root resorption, bone dehiscence, and relapse. Mini-implant-assisted RPE has been introduced to increase the skeletal effects of expansion especially in patients with increased maturation and greater interdigitation of midpalatal suture. This article will review the biomechanics of RPE and mini-implant-assisted RPE. Additionally, the different designs of MARPE and the long-term clinical effects of expansion appliances will also be discussed in detail.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 3","pages":"Pages 105-112"},"PeriodicalIF":2.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140862497","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":"Microplastics: An orthodontic concern!","authors":"Vinod Krishnan (Editor-in-Chief)","doi":"10.1016/j.ejwf.2024.05.001","DOIUrl":"10.1016/j.ejwf.2024.05.001","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 3","pages":"Pages 103-104"},"PeriodicalIF":2.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141238164","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":"Retrospective comparison of two different miniscrew-supported molar distalization methods applied in the buccal and palatal regions","authors":"Yavuz Selim Aslan,&nbsp;Mehmet Ali Yavan,&nbsp;Nihal Hamamci","doi":"10.1016/j.ejwf.2024.01.006","DOIUrl":"10.1016/j.ejwf.2024.01.006","url":null,"abstract":"<div><h3>Background</h3><p>To compare dentofacial effects of distalization with miniscrew-supported pendulum and infrazygomatic crest miniscrews.</p></div><div><h3>Methods</h3><p>The study included 36 patients whose lateral cephalometric radiographs were obtained before (T0) and after (T1) distalization. Patients were divided into two groups according to the treatment methods: 1) distalization with miniscrew-supported pendulum (MSP) (<em>n</em> = 19; 14 girls and 5 boys; mean age 16.9 ± 1.46 years) and 2) distalization with infrazygomatic crest (IZC) miniscrews (<em>n</em> = 17; 8 girls and 9 boys; mean age 17.0 ± 1.68 years). Dental, skeletal and soft tissue measurements were performed on lateral cephalograms taken from individuals.</p></div><div><h3>Results</h3><p>A significant molar distalization was achieved both in the MSP group (3.52 ± 0.76 mm at 8.71 ± 2.02 months) and the IZC group (3.5 ± 0.74 mm at 9.7 ± 2.5 months) (<em>P</em> &lt; 0.001 for both). Premolar distalization was significantly lower in the MSP group (1.73 ± 1.09 mm) than in the IZC group (2.81 ± 0.79 mm) (<em>P</em> &lt; 0.01). Significant molar tipping was observed in both groups (<em>P</em> &lt; 0.001), while no significant difference was found between the groups (<em>P</em> &gt; 0.05). Retrusion of maxillary incisors were significantly higher in the IZC group (2.75 mm) than in the MSP group (0.98 mm) (<em>P</em> &lt; 0.01). A significant difference was found between the two groups with regard to the changes in overjet and overbite (<em>P</em> &lt; 0.05).</p></div><div><h3>Conclusions</h3><p>Both distalization methods were found to be effective in achieving a Class I molar relationship in patients with Class II malocclusion.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 3","pages":"Pages 145-152"},"PeriodicalIF":2.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140207796","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":"Increased susceptibility for nonsyndromic cleft lip with or without cleft palate by SLC19A1 80G>A genetic variation","authors":"Archana Patel ,&nbsp;Nisha Sahu ,&nbsp;Henu Kumar Verma ,&nbsp;L.V.K.S. Bhaskar","doi":"10.1016/j.ejwf.2024.01.002","DOIUrl":"10.1016/j.ejwf.2024.01.002","url":null,"abstract":"<div><h3>Background</h3><p>The disruption of craniofacial developmental pathways during early embryogenesis can lead to conditions such as nonsyndromic cleft lip with or without cleft palate (NSCL/P). Several lines of evidence indicate that inadequate maternal nutrition causes low folate levels during the periconceptional period, resulting in NSCL/P. Although substantial research has been conducted on the possible link between SLC19A1 genetic variants and NSCL/P, the association between SLC19A1 80G&gt;A (rs1051266) and NSCL/P remains unclear. In the present study, the associations of SLC19A1 80G&gt;A with NSCL/P risk were assessed by calculating the pooled odds ratios (ORs) and 95% confidence intervals (CIs) by meta-analyses.</p></div><div><h3>Methods</h3><p>Following the PRISMA guidelines, a meta-analysis was conducted on 10 studies assessing the NSCL/P risk associated with SLC19A1 80G&gt;A variant. To ascertain the degree of relationship between the SLC19A1 80G&gt;A genetic variant and the risk of NSCL/P, data were analyzed in allelic, recessive and dominant genetic models. CI of OR for each study and the pooled data were obtained. All statistical analyses were conducted utilizing the MetaGenyo software tool, which integrates the adjustment of <em>P</em> values for multiple testing through the Bonferroni method.</p></div><div><h3>Results</h3><p>The pooled analysis showed that SLC19A1 80G&gt;A variant significantly increased the NSCL/P risk in the allelic model (OR 1.39; 95% CI 1.00–1.92), recessive model (OR 1.37; 95% CI 1.03–1.82) and dominant models (OR 1.7; 95% CI 1.05–2.90). Publication bias was not observed.</p></div><div><h3>Conclusions</h3><p>This study supports that the SLC19A1 80G&gt;A genetic variant is associated with NSCL/P risk.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 3","pages":"Pages 123-127"},"PeriodicalIF":2.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139940873","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 pain intensity with prostaglandin E2 biomarker and visual analog scale during initiation of orthodontic treatment: A prospective study","authors":"Yuvashree Raghupathy ,&nbsp;Venkateswaran Ananthanarayanan ,&nbsp;Vignesh Kailasam","doi":"10.1016/j.ejwf.2023.10.002","DOIUrl":"10.1016/j.ejwf.2023.10.002","url":null,"abstract":"<div><h3>Objectives</h3><p>The aim of this study was to assess subjectively and objectively, at which timepoint the patient undergoing fixed orthodontic treatment will have maximum pain during the initiation of orthodontic treatment.</p></div><div><h3>Materials and Method</h3><p>A total of 22 patients (21 ± 2.7 years, [15 female and 7 male]) requiring extraction of maxillary first premolar participated in the study. Following bonding, an initial archwire of 0.016\" NiTi was placed with a distal force of 100 g applied to the canines. The concentration of prostaglandin E2 (PGE2) in the gingival crevicular fluid was assessed at four time points: 1 hour before (T0); 24 hours (T1); 48 hours (T2); 72 hours (T3) after initial archwire placement. The pain intensity was recorded with visual analog scale.</p></div><div><h3>Results</h3><p>The concentration of PGE2 increased from T0 to T1. The highest concentration was observed at T2 following which there was a mild decline at T3. Statistically significant difference in the PGE2 concentration was observed between T0 to T1 and T1 to T2. The visual analogue scale (VAS) scores increased from T0 to T1. The highest score was observed at T2 followed by a decline at T3. A statistically significant difference in the VAS score was noted between T0 to T1 and T2 to T3. On correlating PGE2 and VAS score, a weak negative correlation was noted between T0 to T1 and no correlation was noted between T1 to T2 and T2 to T3.</p></div><div><h3>Conclusion</h3><p>The patients experience maximum pain between 24 hours (T1) and 48 hours (T2) following initial archwire placement. The highest concentration of PGE2 and VAS score was observed at 48 hours (T2).</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 72-77"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138177543","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":"Awareness about the orthodontic specialty: A survey study","authors":"Arslan Z．,&nbsp;Elekdag-Türk S．","doi":"10.1016/j.ejwf.2023.12.009","DOIUrl":"10.1016/j.ejwf.2023.12.009","url":null,"abstract":"<div><h3>Background</h3><p>This study aimed to examine how well patients can differentiate between orthodontists and dentists.</p></div><div><h3>Methods</h3><p>Four hundred patients who applied to the Ondokuz Mayıs University Faculty of Dentistry, Department of Oral and Maxillofacial Radiology between March and November of 2022 were queried regarding the difference between an orthodontist and a dentist via a face-to-face survey. The respondents were separated into the following two study groups: patients who had previously undergone orthodontic treatment and those who had not. Demographic data of the patients, such as age, sex, educational status, and monthly income, were also collected, and the effects of these factors on their doctor preferences were analyzed.</p></div><div><h3>Results</h3><p>The vast majority of respondents (&gt;85%) thought that a dentist should be an orthodontic specialist to provide orthodontic treatment. Seven percent of patients chose to receive orthodontic treatment from a dentist. Patients who chose an orthodontist for their treatment were predominantly female and had a high income and a higher level of education. Patients who had a history of orthodontic treatment were better aware of the profession of orthodontics than those who did not.</p></div><div><h3>Conclusions</h3><p>The results indicated that the respondents did not fully understand the clear distinction between an orthodontist and a dentist. This outcome suggests that education concerning this issue is required.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 86-94"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139913678","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":"Use of artificial intelligence in determination of bone age of the healthy individuals: A scoping review","authors":"Adeel Ahmed Bajjad ,&nbsp;Seema Gupta ,&nbsp;Soumitra Agarwal ,&nbsp;Rakesh A. Pawar ,&nbsp;Mansi U. Kothawade ,&nbsp;Gul Singh","doi":"10.1016/j.ejwf.2023.10.001","DOIUrl":"10.1016/j.ejwf.2023.10.001","url":null,"abstract":"<div><h3>Background</h3><p>Bone age assessment, as an indicator of biological age, is widely used in orthodontics and pediatric endocrinology. Owing to significant subject variations in the manual method of assessment, artificial intelligence (AI), machine learning (ML), and deep learning (DL) play a significant role in this aspect. A scoping review was conducted to search the existing literature on the role of AI, ML, and DL in skeletal age or bone age assessment in healthy individuals.</p></div><div><h3>Methods</h3><p>A literature search was conducted in PubMed, Scopus, and Web of Science from January 2012 to December 2022 using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses–Extension for Scoping Reviews (PRISMA-ScR) and Joanna Briggs Institute guidelines. Grey literature was searched using Google Scholar and OpenGrey. Hand-searching of the articles in all the reputed orthodontic journals and the references of the included articles were also searched for relevant articles for the present scoping review.</p></div><div><h3>Results</h3><p>Nineteen articles that fulfilled the inclusion criteria were included. Ten studies used skeletal maturity indicators based on hand and wrist radiographs, two studies used magnetic resonance imaging and seven studies used cervical vertebrae maturity indicators based on lateral cephalograms to assess the skeletal age of the individuals. Most of these studies were published in non-orthodontic medical journals. BoneXpert automated software was the most commonly used software, followed by DL models, and ML models in the studies for assessment of bone age. The automated method was found to be as reliable as the manual method for assessment.</p></div><div><h3>Conclusions</h3><p>This scoping review validated the use of AI, ML, or DL in bone age assessment of individuals. A more uniform distribution of sufficient samples in different stages of maturation, use of three-dimensional inputs such as magnetic resonance imaging, and cone beam computed tomography is required for better training of the models to generalize the outputs for use in the target population.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 95-102"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134650150","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":"Numerical biomechanical finite element analysis of different trimming line designs of orthodontic aligners: An in silico study","authors":"Tarek M. Elshazly ,&nbsp;Christoph Bourauel ,&nbsp;Philippe Chavanne ,&nbsp;Hanaa Elattar ,&nbsp;Ludger Keilig","doi":"10.1016/j.ejwf.2024.01.001","DOIUrl":"10.1016/j.ejwf.2024.01.001","url":null,"abstract":"<div><h3>Background</h3><p>A finite element model was used to investigate the effect of different designs and thicknesses of orthodontic aligner margins on their biomechanical behavior.</p></div><div><h3>Methods</h3><p>A three-dimensional data set of an upper jaw was imported into the 3-matic software. The upper right central incisor tooth (Tooth 11) was separated from the remaining model, and its periodontal ligament and surrounding bone were designed. Aligners were designed with four different trimming lines (scalloped, straight, scalloped extended, straight extended), each with four different thicknesses (0.3, 0.4, 0.5, and 0.6 mm). The models were imported into a finite element package (Marc/Mentat). A linear elastic constitutive material model was applied. A facial 0.2 mm bodily malalignment of tooth 11 was simulated.</p></div><div><h3>Results</h3><p>The maximum resultant force was in the range of 1.0 N to 2.2 N. The straight trimming designs deliver higher resultant forces compared with scalloped trimming designs. Increasing the aligner thickness and/or extending the aligner edge beyond the gingival line leads to an increase in the resultant force. All designs showed an uneven distribution of the normal contact forces over the tooth surface with a predominant concentration toward the cervical third and distal third, particularly with the extended trimming designs. All designs showed uncontrolled tipping of the tooth.</p></div><div><h3>Conclusions</h3><p>Based on the current model outcomes, the use of a straight extended trimming line design for aligners is favored because of its positive impact on force distribution and, consequently, the control of tooth movement.</p></div><div><h3>Clinical Relevance</h3><p>These findings provide aligner companies and orthodontists a valuable biomechanical evidence and guidance to enhance control over tooth movement and therefore optimize treatment outcomes. This can be achieved by trimming the edges of aligners with a straight extended design and selecting the appropriate aligner thickness.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 65-71"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2212443824000018/pdfft?md5=97c3fcaca644237cdd17cf755f87c3e5&pid=1-s2.0-S2212443824000018-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139940874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence in scientific peer review","authors":"Vinod Krishnan","doi":"10.1016/j.ejwf.2024.03.004","DOIUrl":"https://doi.org/10.1016/j.ejwf.2024.03.004","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 55-56"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140339587","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":"Aligner biomechanics: Where we are now and where we are heading for","authors":"Tommaso Castroflorio ,&nbsp;Simone Parrini ,&nbsp;Gabriele Rossini","doi":"10.1016/j.ejwf.2023.12.005","DOIUrl":"10.1016/j.ejwf.2023.12.005","url":null,"abstract":"<div><p>Aligner orthodontics has gained significant popularity as an alternative to traditional braces because of its aesthetic appeal and comfort. The biomechanical principles that underlie aligner orthodontics play a crucial role in achieving successful outcomes.</p><p>The biomechanics of aligner orthodontics revolve around controlled force application, tooth movement, and tissue response.</p><p>Efficient biomechanics in aligner orthodontics involves consideration of attachment design and optimized force systems. Attachments are tooth-colored shapes bonded to teeth, aiding in torque, rotation, and extrusion movements. Optimized force systems ensure that forces are directed along the desired movement path, reducing unnecessary strain on surrounding tissues.</p><p>Understanding and manipulating the biomechanics of aligner orthodontics is essential for orthodontists to achieve optimal treatment outcomes. This approach requires careful treatment planning, considering the mechanics required for each patient's specific malocclusion. As aligner orthodontics continues to evolve, advances in material science and treatment planning software contribute to refining biomechanical strategies, enhancing treatment efficiency, and expanding the scope of cases that can be successfully treated with aligners.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 2","pages":"Pages 57-64"},"PeriodicalIF":2.1,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139479550","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}