Journal of the World Federation of Orthodontists最新文献

{"title":"Maxillary expansion in nongrowing patients. Conventional, surgical, or miniscrew-assisted, an update","authors":"Sylvain Chamberland","doi":"10.1016/j.ejwf.2023.04.005","DOIUrl":"10.1016/j.ejwf.2023.04.005","url":null,"abstract":"<div><p>Maxillary transverse deficiency can occur in various clinical dentoskeletal deformities and include unilateral or bilateral posterior crossbite, narrow, tapering, or high palatal arch.</p><p>The development of temporary anchorage devices led to a new generation of tooth-bone-borne expansion appliance using two or four screws to apply the mechanical forces to the bone and reduce the stress to the anchored teeth. The aim of these new devices is to reduce the adverse dentoalveolar effect and achieve more skeletal expansion than conventional tooth-borne rapid palatal expansion.</p><p>This article reviews the age limitation and complication and soft tissue change of nonsurgical maxillary expansion. We discuss the approach of surgical maxillary expansion with maxillary skeletal expander device. The clinical case will show the benefit of nonsurgical and surgical tooth-bone-borne rapid palatal expansion.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 4","pages":"Pages 173-183"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10011418","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":"Reviving orthodontics: Rediscovering the importance of basic biological principles","authors":"","doi":"10.1016/j.ejwf.2023.07.001","DOIUrl":"10.1016/j.ejwf.2023.07.001","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 4","pages":"Pages 139-140"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9959594","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":"The effects of miniscrew-assisted rapid palatal expansion on the upper airway of adults with midpalatal suture in the last two degrees of ossification","authors":"Fábio Ferreira Anéris ,&nbsp;Ossam El Haje ,&nbsp;Henrique Damian Rosário ,&nbsp;Carolina Carmo de Menezes ,&nbsp;Cristina Maria Franzini ,&nbsp;William Custodio","doi":"10.1016/j.ejwf.2023.05.005","DOIUrl":"10.1016/j.ejwf.2023.05.005","url":null,"abstract":"<div><p>Background: Transverse deficiencies of the maxillary basal bone have been treated in adult patients using miniscrew-assisted rapid palatal expansion (MARPE) therapy. However, the midpalatal suture's degree of ossification may affect the upper airway dimensions. This study compared the volumetric changes of the total upper, retropalatal, retroglossal airways, and the minimal transverse airway constriction after MARPE therapy in patients with midpalatal suture in the last stages of ossification. Methods:This controlled clinical trial included a total of 20 adult patients (mean age 24.5 ± 6.2 years) with maxillary atresia treated with MARPE. Preoperative (T₀) cone-beam computed tomography scans were used to determine the degree of midpalatal suture ossification. Two groups were formed considering the last two stages of sutural ossification “D” or “E” (n = 10 per group). After 120 days of the therapy (T₁), cone-beam computed tomography assessments were performed to compare the pre and post-treatment outcomes. The total upper, retropalatal, and retroglossal airways and the minimal transverse airway constriction were evaluated. The three-dimensional reconstruction was performed with OsiriX MD software. The comparisons were carried out using mixed models for repeated measures at fixed time points (α = 0.05). Results: Groups D and E showed no significant difference for any of the analyzed parameters (<em>P</em> &gt; 0.05). Both groups showed a statistically significant increase for all airway segments after the treatment with MARPE (<em>P</em> &lt; 0.05). The total upper airway increased (11.6% and 16.1%) for groups D and E, respectively (<em>P</em> = 0.3356). Conclusions: MARPE therapy resulted in dimensional gains of the upper airway for adult patients, irrespective of the intermaxillary sutural degree of ossification.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 4","pages":"Pages 150-155"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10011417","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":"Mechanobiology of orthodontic tooth movement: An update","authors":"Jaap C. Maltha ,&nbsp;Anne Marie Kuijpers-Jagtman","doi":"10.1016/j.ejwf.2023.05.001","DOIUrl":"10.1016/j.ejwf.2023.05.001","url":null,"abstract":"<div><p>The purpose of this review is to provide an update on the changes at the cellular and tissue level occurring during orthodontic force application. For the understanding of this process, knowledge of the mechanobiology of the periodontal ligament and the alveolar bone are essential. The periodontal ligament and alveolar bone make up a functional unit that undergoes robust changes during orthodontic tooth movement. Complex molecular signaling is responsible for converting mechanical stresses into biochemical events with a net result of bone apposition and/or bone resorption. Despite an improved understanding of mechanical and biochemical signaling mechanisms, it is largely unknown how mechanical stresses regulate the differentiation of stem/progenitor cells into osteoblast and osteoclast lineages. To advance orthodontics, it is crucial to gain a better understanding of osteoblast differentiation from mesenchymal stem/progenitor cells and osteoclastogenesis from the hematopoietic/monocyte lineage.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 4","pages":"Pages 156-160"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10011424","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":"The straight-wire appliance: Individualization versus customization","authors":"Will A. Andrews","doi":"10.1016/j.ejwf.2023.06.004","DOIUrl":"10.1016/j.ejwf.2023.06.004","url":null,"abstract":"<div><p>The straight-wire appliance is an individualized, fully-programmed appliance system that has been in clinical use since the early 1970s. A study of tooth positions in individuals with naturally occurring harmonious occlusions led to the discovery of the Six Keys to Normal (Optimal) Occlusion which provided data for bracket features and prescription values incorporated into the straight-wire appliance. It was based on the notion that tooth anatomy, morphology, and optimal positions were alike enough among individuals, regardless of age, sex, or race to justify using prefabricated brackets with average prescription values. New technologies have led to advancements in appliance customization. Customized brackets can be made-to-order with one-of-a-kind prescription values and bracket base contours that fit precisely to the morphologic characteristics of the teeth. If costs and material qualities were comparable, would treatment efficiency or treatment outcomes be superior when using a customized appliance compared with a prefabricated straight-wire appliance? If not, why not?</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 4","pages":"Pages 166-172"},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10314909","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":"The efficacy of anterior open bite closure when using Invisalign's optimized extrusion versus conventional attachments","authors":"Hamad Burashed","doi":"10.1016/j.ejwf.2023.04.001","DOIUrl":"10.1016/j.ejwf.2023.04.001","url":null,"abstract":"<div><h3>Background</h3><p>Clear aligners are reported to control anterior open bites. Despite this, anterior extrusion remains difficult with aligners. Optimized extrusion attachments on incisors may facilitate anterior extrusion to correct open bite with Invisalign. The aim of this retrospective study was to compare the efficacy of anterior open bite correction with Invisalign when using optimized extrusion versus conventional attachments.</p></div><div><h3>Methods</h3><p>This was a retrospective cohort study. The pre- and post-treatment intraoral scans of patients with anterior open bite treated with Invisalign aligners were assessed. Patients were divided into two groups: group A, patients with horizontal conventional attachments and group B, patients with optimized extrusion attachments on incisors. The pre and post-treatment overbite and the planned overbite change were measured and compared between the groups. Descriptive statistics were computed and statistical significance was set at <em>P</em> &lt; 0.05.</p></div><div><h3>Results</h3><p>A total of 86 patients were included. Both groups showed significant increases in overbite, but there was no difference in the open bite correction efficacy in patients with conventional versus optimized attachments. Shorter treatment times for open bite closure were reported for patients with optimized attachments.</p></div><div><h3>Conclusions</h3><p>Anterior open bite can be corrected regardless of the attachment type. Optimized attachments are no more effective than using conventional attachments in incisor extrusion to correct open bite. Patients with anterior open bite with optimized attachments observed shorter treatment times for overbite correction. When correcting anterior open bite with Invisalign, the attachment type does not improve the success rate. Optimized extrusion attachments on incisors may shorten the treatment time compared to conventional attachments.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 3","pages":"Pages 112-117"},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9620706","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":"Applications and effectiveness of teledentistry in orthodontic practice during the COVID-19 restrictions","authors":"Emre Kayalar ,&nbsp;Berkan Küçükkurt","doi":"10.1016/j.ejwf.2023.04.002","DOIUrl":"10.1016/j.ejwf.2023.04.002","url":null,"abstract":"<div><h3>Background</h3><p>The aim of this study was to identify the areas of application for teledentistry and analyze its effectiveness in orthodontic practice during the COVID-19 pandemic.</p></div><div><h3>Methods</h3><p> <!-->A total of 233 patients (159 women, 74 men) receiving orthodontic treatment were included. During the COVID-19 restriction period, patients were given teledentistry appointments. During these video conferences, remote orthodontic checkups were performed by one orthodontist, who asked the patients for photos or videos. The applications carried out during the interviews were recorded, classified, and analyzed. In addition, clinical emergency patients were identified. After the teledentistry consultations, two different questionnaires were presented to the patients, depending on their attendance at teledentistry appointments, and the results were statistically evaluated.</p></div><div><h3>Results</h3><p> <!-->In all, 21.25% of the patients were identified as having clinical emergencies, including injury because of damage from brackets and wires; 10% of them reported bracket breakage; 17.5% were encouraged to use intermaxillary elastics; and 3.75% were in pain. However, 50% of them were found to be unproblematic. A total of 91% of the participants in the survey reported that online checkups were sufficient to understand and resolve their symptoms. However, 28% wanted to communicate with orthodontists by video call or with photos instead of meeting face to face (65.5%) when unexpected problems arose during the COVID-19 pandemic.</p></div><div><h3>Conclusions</h3><p> <!-->Teledentistry can be an effective method for motivating patients who are undergoing orthodontic treatments that require cooperation. It is also an effective way of understanding the patients’ symptoms and reducing the risk of cross-infection by identifying patients who will require face-to-face emergency treatment during pandemics.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 3","pages":"Pages 118-124"},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10174472/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9618263","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":"Inspired and motivated: The benefits of attending the annual meeting","authors":"Vinod Krishnan (Editor-in-Chief)","doi":"10.1016/j.ejwf.2023.05.004","DOIUrl":"10.1016/j.ejwf.2023.05.004","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 3","pages":"Pages 91-92"},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9565338","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":"Dental changes induced by a modified Herbst appliance followed by fixed appliances: A digital dental model analysis","authors":"Paulo Guilherme Bittencourt Marchi ,&nbsp;Juan Francisco Mariscal Muñoz ,&nbsp;Luís Antônio de Arruda Aidar ,&nbsp;Luiz Carlos Marchi ,&nbsp;Gladys Cristina Dominguez ,&nbsp;Dirceu Barnabé Raveli","doi":"10.1016/j.ejwf.2023.05.002","DOIUrl":"10.1016/j.ejwf.2023.05.002","url":null,"abstract":"<div><h3>Background</h3><p>Herbst therapy is an effective treatment for Class II malocclusions. However, the maintenance of the effects after fixed appliances treatment remains questionable. This retrospective study aimed to assess, using digital dental models, the sagittal and transverse dental arch changes in young patients during two Class II Division 1 treatment phases, first with modified Herbst appliance (HA) and then with fixed appliances.</p></div><div><h3>Methods</h3><p>The treated group (TG) comprised 32 patients (17 boys, 15 girls; mean age, 12.85 ± 1.16 years) treated with HA and fixed appliances. The control group comprised 28 patients (13 boys, 15 girls; mean age, 12.21 ± 1.35 years) with untreated Class II malocclusions. Digital models were obtained immediately before and after HA therapy and after fixed appliances. Data were statistically analyzed.</p></div><div><h3>Results</h3><p>Compared with the control group, the TG showed an increase in maxillary and mandibular arch perimeters and in intercanine and intermolar arch widths, a decrease in overjet and overbite, and an improvement in canine and molar relationships. In the time after HA therapy until the end of fixed appliances treatment, the TG showed a decrease in maxillary and mandibular arch perimeters, overjet, upper and lower intermolar widths; an increase in molar Class II relationship; and no changes in canine relationship, overbite, and upper and lower intercanine widths.</p></div><div><h3>Conclusions</h3><p>In this sample of patients treated with HA, on average, there was an improvement in the Class II relationship, which seemed to remain after fixed appliances. The transverse dental changes achieved in HA phase relapsed after treatment with fixed appliances.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 3","pages":"Pages 131-137"},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9990356","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":"Quantifying the efficacy of overbite reduction in patients treated with clear aligners using optimized versus conventional attachments","authors":"Hamad Burashed ,&nbsp;Rami El Sebai","doi":"10.1016/j.ejwf.2023.03.003","DOIUrl":"10.1016/j.ejwf.2023.03.003","url":null,"abstract":"<div><h3>Background</h3><p>Deep overbite has been shown to be difficult to correct with clear aligners. Optimized deep bite attachments are reported to facilitate deep bite correction with aligners. The aim of this retrospective study was to quantify the efficacy of deep bite correction with aligners when using optimized versus conventional attachments.</p></div><div><h3>Methods</h3><p>This was a retrospective cohort study. The pretreatment and post-treatment intraoral scans of patients with deep overbite treated with Invisalign clear aligners were accessed. Patients were divided into two groups: group A, patients treated with conventional attachments, and group B, patients treated with optimized attachments. Pre and post-treatment overbite and the planned overbite reduction were measured and compared between groups. Descriptive statistics were computed, and statistical significance was set at <em>P</em> &lt; 0.05.</p></div><div><h3>Results</h3><p>Seventy-eight patients were included. There was no statistically significant difference in overbite reduction between patients who had conventional versus optimized attachments. The amount of overbite reduction observed post-treatment was found to be no more than 33-40% of the planned amount of overbite reduction across all patients and groups.</p></div><div><h3>Conclusions</h3><p>Deep overbite correction with aligners remains difficult regardless of the type of attachment used. Optimized attachments are no more effective than using conventional attachments in reducing deep overbite. The amount of overbite reduction expected with clear aligners is significantly lower than the planned overbite reduction.</p></div><div><h3>Practical Implications</h3><p>When correcting deep bite with clear aligners, the attachment type does not improve the success rate. Clinicians should plan to overcorrect deep bite reduction to expect only 33% to 40% of their planned final overbite to be actually expressed.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 3","pages":"Pages 105-111"},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9608715","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}