Journal of the World Federation of Orthodontists最新文献

{"title":"Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications","authors":"Yoon Jeong Choi ,&nbsp;Heeyeon Suh ,&nbsp;Jung Jin Park ,&nbsp;Jae Hyun Park","doi":"10.1016/j.ejwf.2023.12.006","DOIUrl":"10.1016/j.ejwf.2023.12.006","url":null,"abstract":"<div><p>Anterior open bite can be effectively treated nonsurgically via molar intrusion. This technique, involving the intrusion of posterior teeth using temporary skeletal anchorage devices, prompts counterclockwise rotation of the mandible. This rotation not only corrects anterior open bite but also contributes to a decrease in anterior facial height, improvements in lip incompetency, and forward movement of the chin. For successful outcomes, temporary skeletal anchorage devices, installed on both the buccal and palatal sides, must deliver equivalent intrusion force to the maxillary teeth. Treatment planning should consider factors such as skeletal discrepancies, vertical excess, incisor exposure, and configuration of the occlusal plane. Clinicians are advised to closely monitor periodontal changes and consider overcorrection to ensure lasting stability and maintenance of incisal overlap post-treatment.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 1","pages":"Pages 2-9"},"PeriodicalIF":2.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2212443823001133/pdfft?md5=e48e759091ea2f153219d45b2698b60a&pid=1-s2.0-S2212443823001133-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139378496","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":"Nonextraction anterior open bite treatment with distalization and intrusion","authors":"Kyoshi Tai ,&nbsp;Steven Park ,&nbsp;Andre Weissheimer ,&nbsp;Yasumori Sato ,&nbsp;Sercan Akyalcin","doi":"10.1016/j.ejwf.2023.12.003","DOIUrl":"10.1016/j.ejwf.2023.12.003","url":null,"abstract":"<div><p>This case report describes successful orthodontic retreatment for vertical control with nonextraction orthodontic therapy. A 31-year-old woman complained of anterior open bite and crowding. She had slightly protrusive lips but wanted to correct her malocclusion without extraction. Two palatal temporary skeletal anchorage devices were used for the distalization of the maxillary arch along with posterior intrusion. Mandibular distalization was performed with Class III elastics. The duration of active treatment was 22 months. The plain and efficient mechanics used contributed to the effective distalization of both arches, the intrusion of the maxillary posterior teeth, and favorable profile changes. The results were still stable at the five-year follow-up period.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 1","pages":"Pages 48-54"},"PeriodicalIF":2.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221244382300111X/pdfft?md5=6905c87942b21c71ef29275bb580632a&pid=1-s2.0-S221244382300111X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139049517","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":"Orthodontic treatment of an open bite after splint therapy for a patient with idiopathic condylar resorption","authors":"Gye Hyeong Lee ,&nbsp;Jae Hyun Park ,&nbsp;Young Guk Park ,&nbsp;Danal Moon ,&nbsp;Sang Mi Lee","doi":"10.1016/j.ejwf.2023.12.001","DOIUrl":"10.1016/j.ejwf.2023.12.001","url":null,"abstract":"<div><p>In the treatment of orthodontic patients with idiopathic condylar resorption, symptoms of temporomandibular joint disorders and constantly changing occlusions caused by an instability of mandibular position make it difficult for orthodontists to confirm definitive orthodontic diagnosis and treatment plans. Therefore, these patients' temporomandibular joint (TMJ) structures need to be stabilized with splint therapy before active tooth movement to identify and maintain the true mandibular position. For some idiopathic condylar resorption patients, orthognathic surgery can cause further resorption on the vulnerable condyles of the mandible; thus, effective orthodontic camouflage treatment after joint stabilization should be considered. During the orthodontic camouflage treatment, adverse loads on the TMJ structures, which could change the position of condyles, should be avoided, and TMJ-friendly mechanics must be applied.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 1","pages":"Pages 38-47"},"PeriodicalIF":2.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2212443823001091/pdfft?md5=39a5dfb34fd654cc0db91d6d206fca7c&pid=1-s2.0-S2212443823001091-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139075416","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":"Orthodontic considerations in hypodivergent craniofacial patterns","authors":"Johnny J.L. Liaw ,&nbsp;Jae Hyun Park","doi":"10.1016/j.ejwf.2023.12.007","DOIUrl":"10.1016/j.ejwf.2023.12.007","url":null,"abstract":"<div><p>This article examines the characteristics of hypodivergent craniofacial patterns and explores treatment modalities in response to these features. It discusses the impact of robust masticatory muscles, which produce heavy occlusal forces. In addition, it examines the use of Botox or splints to reduce gonial angles in individuals with a square face. A nonextraction treatment approach supported by temporary skeletal anchorage devices is recommended; however, if anatomical limitations persist, extraction may be necessary when arch expansion, molar distalization, incisor proclination, or interproximal reduction cannot create the necessary space. In hypodivergent cases where a nonextraction approach is impractical, a single-arch extraction strategy may be considered to prevent a reduction in the vertical dimension. Emphasizing esthetics, particularly maxillary incisor display, a protocol of total arch extrusion of the maxillary dentition assisted with temporary skeletal anchorage device, bite raisers, and interarch elastics is suggested.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 1","pages":"Pages 18-24"},"PeriodicalIF":2.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2212443823001145/pdfft?md5=79686eb6083be3b7f1dcaede63ab6e93&pid=1-s2.0-S2212443823001145-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139088903","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":"Current status of the biomechanics of extra-alveolar miniscrews","authors":"Marcio Rodrigues de Almeida","doi":"10.1016/j.ejwf.2023.12.002","DOIUrl":"10.1016/j.ejwf.2023.12.002","url":null,"abstract":"<div><p>Temporary skeletal anchorage devices such as miniscrews are frequently used nowadays. Compared to miniplates, miniscrews are much less expensive and technically easier to place and remove; they are popular and can be easily placed by an orthodontist. Extra-alveolar miniscrews offer benefits compared to inter-radicular miniscrews, such as reduced risk of root damage and the lack of interference with the mesiodistal tooth movement. They are particularly useful for addressing anchorage loss issues and enabling specific tooth movements such as total arch maxillary and mandibular retraction, posterior distalization, molar protraction, molar intrusion, occlusal plane control, and midline correction. The present paper discusses the current biomechanics principles related to the use of extra-alveolar miniscrews placed in the infrazygomatic and mandibular buccal shelf.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"13 1","pages":"Pages 25-37"},"PeriodicalIF":2.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221244382300108X/pdfft?md5=83d9bbd524cd338121226819cd22b7ad&pid=1-s2.0-S221244382300108X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139058861","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":"Static friction, surface roughness, and antibacterial activity of orthodontic brackets coated with silver and silver chitosan nanoparticles","authors":"Magda Shaban Tawakal ,&nbsp;Amr Mohamed Abdelghany Metwally ,&nbsp;Noha A. El-Wassefy ,&nbsp;Marwa Ali Tawfik ,&nbsp;Marwa Sameh Shamaa","doi":"10.1016/j.ejwf.2023.08.002","DOIUrl":"10.1016/j.ejwf.2023.08.002","url":null,"abstract":"<div><h3>Background</h3><p>To determine the effect of silver and silver chitosan nanocoatings on monocrystalline ceramic, polycrystalline ceramic, and metallic brackets regarding friction, roughness, and antibacterial effect against <em>Streptococcus mutans</em>.</p></div><div><h3>Methods</h3><p>A total of 99 upper right premolar brackets with a 0.022 × 0.025 -inch slot were divided into three groups, each 33 according to coating material; the non-coated group, silver nanoparticles (AgNPs), and silver chitosan nanoparticles (Ag-CsNPs) groups. Each group was equally subdivided into the following three subgroups regarding bracket materials: monocrystalline ceramic, polycrystalline ceramic, and metallic brackets. A universal testing machine determined static friction on a custom-made acrylic jig. Then a profilometer machine was used to collect roughness data, and finally, the anti-cariogenic effect was measured with the disc diffusion technique's “minimum zone of inhibition” against <em>Streptococcus mutans</em>. Two-way ANOVA was used to compare data between groups and subgroups, followed by the Bonferroni test for multiple pair-wise comparisons.</p></div><div><h3>Results</h3><p>The nanocoating effect on ceramic brackets' static friction was non-significant. The AgNPs and Ag-CsNPs coated metallic group revealed a significant increase in static friction—a significant effect of the nanocoating in the surface roughness of monocrystalline and polycrystalline ceramic brackets. A significant favorable effect of AgNPs and Ag-CsNPs against <em>Streptococcus mutans</em> was observed.</p></div><div><h3>Conclusions</h3><p>AgNPs and Ag-CsNPs coats are unsuitable for decreasing friction in metallic brackets or improving roughness in polycrystalline ceramic brackets. Nano coating can improve roughness in monocrystalline ceramic brackets. Coating brackets with AgNPs and Ag-CsNPs has a tremendous antibacterial effect on <em>Streptococcus mutans</em>, a substantial factor in the incidence of dental caries.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 6","pages":"Pages 260-268"},"PeriodicalIF":2.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10246123","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":"Comparison of sleep quality between clear aligner and fixed appliance orthodontic therapies","authors":"Zaki Hakami","doi":"10.1016/j.ejwf.2023.09.002","DOIUrl":"10.1016/j.ejwf.2023.09.002","url":null,"abstract":"<div><h3>Background</h3><p>Although available evidence suggests that orthodontic appliances can impact quality of life, there is limited information on the impact of orthodontic appliances on sleep quality. This study aimed to compare sleep quality between patients undergoing orthodontic treatments using conventional fixed appliances and clear aligners.</p></div><div><h3>Methods</h3><p>Adult patients attending clinics in Saudi Arabia participated in this cross-sectional study. Sleep quality was assessed using the validated Arabic version of the Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS). Statistical significance was determined using inferential analysis, with a <em>P</em> &lt; 0.05 considered statistically significant.</p></div><div><h3>Results</h3><p>There were 69 patients included in the study. The average age of a patient (33.12 ± 8.1) who received the clear aligner was significantly higher than those who received the fixed appliance (27.7 ± 5.9) (<em>P</em> &lt; 0.05). The variation in the average score of ESS because of the education level was found to be statistically significant (<em>P</em> &lt; 0.05). No significant difference was observed between the mean average ESS and PSQI global scores across the two orthodontic treatment groups. The average sleep latency scores were significantly higher in females than males when analyzing the PSQI component score across sex (<em>P</em> &lt; 0.05). In education, ESS, PSQI global, habitual sleep efficiency, the use of sleep medication, and daytime dysfunction had a positive, weak, but significant correlation.</p></div><div><h3>Conclusions</h3><p>Overall, this study concluded that regardless of the orthodontic appliances used, there was no statistically significant difference in sleep quality during the treatment.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 6","pages":"Pages 245-250"},"PeriodicalIF":2.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41239675","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 effectiveness and efficiency of fixed orthodontic treatment comparing standard and computer-aided design and manufacturing conventional bracket systems using indirect bonding for both: A retrospective study","authors":"Mario Palone ,&nbsp;Chiara Bizzocchi ,&nbsp;Daniela Guiducci ,&nbsp;Francesca Cremonini ,&nbsp;Federica Pellitteri ,&nbsp;Giorgio Alfredo Spedicato ,&nbsp;Alessandro Verducci ,&nbsp;Luca Lombardo","doi":"10.1016/j.ejwf.2023.08.001","DOIUrl":"10.1016/j.ejwf.2023.08.001","url":null,"abstract":"<div><h3>Background</h3><p>To compare the effectiveness and efficiency of orthodontic treatment (OT) with standard versus computer-aided design and computer-aided manufacturing (CAD/CAM) indirect bonding of conventional brackets.</p></div><div><h3>Methods</h3><p>This retrospective study examined two groups: standard indirect bonding group (12 males, 13 females; mean age 12.21 ± 0.52 years), and digital indirect bonding group (11 males, 14 females; mean age 12.76 ± 1.32 years), treated via a CAD/CAM indirect bonding system. Conventional brackets were used in both groups. Pretreatment and post-treatment records were acquired for all subjects. Weighted Peer Assessment Rating (W-PAR) index was used to assess the effectiveness of OT, in conjunction with five angular cephalometric measurements (ANB°, Sn-GoGn°, U1-PP°, IMPA° and FMA°) and comparatively analyzed using generalized mixed-effects models and post hoc test. Treatment efficiency was assessed in terms of the numbers of bracket repositionings, archwire bends, accidental bracket debondings, appointments and treatment months. Comparative analysis of efficiency was performed using the asymptotic Wilcoxon–Mann–Witney test. Statistical significance was set at 5%.</p></div><div><h3>Results</h3><p>Total W-PAR and W-PAR component scores decreased significantly during treatment for both groups and in a similar way. Cephalometric measures ANB° and IMPA° significantly decreased and increased, respectively. Significantly fewer bracket repositionings, number of appointments and treatment months were recorded in group digital indirect bonding.</p></div><div><h3>Conclusions</h3><p>Although both methods investigated were effective to achieve good outcomes, CAD/CAM indirect bonding method increased the efficiency of OT, when conventional brackets are used.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 6","pages":"Pages 251-259"},"PeriodicalIF":2.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41104643","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":"Augmented reality in orthodontics for bracket placement using conventional mobile devices: Technical note","authors":"Dragan Alexander Ströbele ,&nbsp;Ahmed Othman ,&nbsp;Marius Alexander Meier ,&nbsp;Khaled Aboulazm ,&nbsp;Constantin von See","doi":"10.1016/j.ejwf.2023.08.003","DOIUrl":"10.1016/j.ejwf.2023.08.003","url":null,"abstract":"<div><h3>Background</h3><p>Improving bracket placement accuracy through computer-aided design and a bracket navigation set supported by augmented reality (AR).</p></div><div><h3>Methods</h3><p>A technical workflow was developed for implementing AR-assisted orthodontic bracket positioning through a smartphone application. This innovative approach eliminates the need for three-dimensional radiation imaging or physical guides, making it a safe and convenient option for clinical use by overlapping the digitally planned bracket position over the patient clinical crown for a precise recommendation of bracket positioning.</p></div><div><h3>Results</h3><p>It was found that it is achievable and can be easily recognized from all view angles, and this proves that new techniques with new opportunities could be considered.</p></div><div><h3>Conclusions</h3><p>AR smartphone applications can potentially be used for the accurate placement of dental brackets; thus, such applications show promise for use in the field of orthodontics.</p></div>","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 6","pages":"Pages 280-283"},"PeriodicalIF":2.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10246122","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 search of reliable practice guidelines","authors":"Vinod Krishnan (Editor-in-Chief)","doi":"10.1016/j.ejwf.2023.11.001","DOIUrl":"https://doi.org/10.1016/j.ejwf.2023.11.001","url":null,"abstract":"","PeriodicalId":43456,"journal":{"name":"Journal of the World Federation of Orthodontists","volume":"12 6","pages":"Pages 237-238"},"PeriodicalIF":2.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138467516","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}