The Angle orthodontist最新文献_第8页

Mandibular alveolar bone thickness in untreated Class I subjects with different vertical skeletal patterns: a cone-beam computed tomography study. 具有不同垂直骨骼模式的未经治疗的I类受试者的下颌牙槽骨厚度：锥形束计算机断层扫描研究。

The Angle orthodontist Pub Date : 2023-11-01 DOI: 10.2319/030523-151.1

Joseph Formosa, Min Zou, Chun-Hsi Chung, Normand S Boucher, Chenshuang Li

{"title":"Mandibular alveolar bone thickness in untreated Class I subjects with different vertical skeletal patterns: a cone-beam computed tomography study.","authors":"Joseph Formosa, Min Zou, Chun-Hsi Chung, Normand S Boucher, Chenshuang Li","doi":"10.2319/030523-151.1","DOIUrl":"10.2319/030523-151.1","url":null,"abstract":"Objective: To evaluate the mandibular alveolar bone thickness in untreated skeletal Class I subjects with different vertical skeletal patterns.Materials and methods: A total of 50 preorthodontic treatment cone-beam computed tomography (CBCT) images of a skeletal Class I Chinese population with near-normal occlusion were selected. The buccal and lingual alveolar bone thicknesses of mandibular canines to second molars were measured at 2 mm below the cementoenamel junction (CEJ), mid-root, and root apex levels. Differences in the measurements were analyzed with Mann-Whitney U-test. The correlation between alveolar bone thickness and the sella-nasion-mandibular plane (SN-MP) angle was calculated using Pearson correlation coefficients and linear regression analysis.Results: Buccal alveolar bone was thinner on all mandibular canines to first molars but thicker on second molars in comparison with lingual alveolar bone. Buccal alveolar bone was within 1 mm at the levels of 2 mm below CEJ and mid-root for the canines and first premolars. Significant differences were detected among subjects with different vertical patterns, with a negative correlation between the SN-MP angle and alveolar thickness, especially in the canine and premolar regions. The thinnest buccal and lingual alveolar bone were detected in the high-angle group canine region (0.50 mm at the levels of 2 mm below CEJ and mid-root for the buccal side, 0.90 mm at the level of 2 mm below the CEJ for the lingual side).Conclusions: To avoid periodontal complications, buccal-lingual movement of the mandibular canines and first premolars should be limited, especially in high-angle patients.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"93 6","pages":"683-694"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10633791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71435000","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}

引用次数: 0

Stability of anterior open bite cases treated with upper and lower extrusion arches in adults: a follow-up study. 成人上下挤压弓治疗前部开放性咬合病例的稳定性：一项随访研究。

The Angle orthodontist Pub Date : 2023-11-01 DOI: 10.2319/030623-155.1

Tasneem Hammad, Alaaeldin Elraggal, Hassan Moussa, Wessam Marzouk, Hanan Ismail

{"title":"Stability of anterior open bite cases treated with upper and lower extrusion arches in adults: a follow-up study.","authors":"Tasneem Hammad, Alaaeldin Elraggal, Hassan Moussa, Wessam Marzouk, Hanan Ismail","doi":"10.2319/030623-155.1","DOIUrl":"10.2319/030623-155.1","url":null,"abstract":"Objectives: To investigate the post-treatment stability of anterior open bite (AOB) cases treated with upper and lower extrusion arches in adults.Materials and methods: 23 patients with AOB were treated with extrusion arches and evaluated for dentoskeletal changes using lateral cephalometric radiographs before treatment (T0), after treatment (T1), and 12 months post-treatment (T2). Patients received bondable tongue spurs and vacuum-formed retainers as post-treatment retention/stability measures for 12 months. Post-treatment stability was further assessed qualitatively by the Photographic Openbite Severity Index.Results: All the cases showed positive overlap between the anterior teeth at the end of orthodontic treatment, and 20 of 23 treated patients attended the recall visit after 12 months. A total of 85% of the cases maintained positive overlap at least 1 year post-treatment, 10% showed edge-to-edge bite, and only 5% showed no overbite.Conclusions: Treatment of AOB in adults with extrusion arches proved to be stable 1 year post-treatment. Changes in the overbite after 1 year of follow-up were not significant.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"93 6","pages":"659-666"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10633792/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71435002","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}

引用次数: 0

Three-dimensional morphologic analysis of the maxillary alveolar bone after anterior tooth retraction with temporary anchorage devices. 上颌牙槽骨的三维形态分析前牙临时固定装置后牙退缩。

The Angle orthodontist Pub Date : 2023-11-01 DOI: 10.2319/120122-827.1

Arata Ito, Atsushi Mayama, Toshihito Oyanagi, Hiroki Ogura, Masahiro Seiryu, Tomohiro Fukunaga, Hideki Kitaura, Itaru Mizoguchi

{"title":"Three-dimensional morphologic analysis of the maxillary alveolar bone after anterior tooth retraction with temporary anchorage devices.","authors":"Arata Ito, Atsushi Mayama, Toshihito Oyanagi, Hiroki Ogura, Masahiro Seiryu, Tomohiro Fukunaga, Hideki Kitaura, Itaru Mizoguchi","doi":"10.2319/120122-827.1","DOIUrl":"10.2319/120122-827.1","url":null,"abstract":"Objectives: To investigate three-dimensional (3D) morphologic changes in the alveolar bone around the maxillary central incisors of patients who underwent premolar extraction and subsequent anterior tooth retraction using temporary anchorage devices (TADs).Materials and methods: The subjects consisted of 16 patients with bimaxillary protrusion. The maxillary anterior teeth were retracted using sliding or loop mechanics and TADs for anchorage reinforcement. Cephalograms and computed tomography scans taken pretreatment and posttreatment were registered with respect to the palatal structures. The movement of the maxillary central incisors and morphologic changes in the anterior alveolar bone were evaluated quantitatively.Results: Displacement in the palatal direction was observed in the alveolar bone around the incisors and the interdental septum. The displacement and bone remodeling/tooth movement ratio were larger on the labial side than the palatal side, and decreased progressively from the crest to apex level. The bone thickness was significantly increased on the labial side and decreased on the palatal side.Conclusions: Regional differences exist in morphologic changes of the alveolar bone during anterior tooth retraction using TADs. Attention should be paid to the crest region of the palatal alveolar bone because of its small original thickness and low remodeling activity.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"93 6","pages":"667-674"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10633794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71435003","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}

引用次数: 0

Root resorption during maxillary molar intrusion with clear aligners: a randomized controlled trial. 透明矫正器在上颌磨牙侵犯过程中的牙根吸收：一项随机对照试验。

The Angle orthodontist Pub Date : 2023-11-01 DOI: 10.2319/010723-14.1

Wisama Withayanukonkij, Pannapat Chanmanee, Methee Promsawat, Smorntree Viteporn, Chidchanok Leethanakul

{"title":"Root resorption during maxillary molar intrusion with clear aligners: a randomized controlled trial.","authors":"Wisama Withayanukonkij, Pannapat Chanmanee, Methee Promsawat, Smorntree Viteporn, Chidchanok Leethanakul","doi":"10.2319/010723-14.1","DOIUrl":"10.2319/010723-14.1","url":null,"abstract":"Objectives: To compare changes in maxillary molar root resorption, intrusion amount, dentoskeletal measures, and maximum bite force (MBF) between clear aligners (CA) and fixed appliances with miniscrew (FM) during molar intrusion.Materials and methods: Forty adults with anterior open bite were randomized into either CA or FM groups. Lateral cephalograms, cone-beam computed tomography (CBCT), and MBF were collected at pretreatment (T0) and 6 months of treatment (T1). Maxillary molar intrusion in FM were intruded by nickel-titanium (NiTi) closed-coil spring delivered force (150 grams/side) while clear aligners combined with squeezing exercise were performed in CA. Parametric tests were used for statistical analysis.Results: After 6 months of treatment, significant root resorption of 0.21-0.24 mm in CA and 0.38-0.47 mm in FM were found while maxillary molars were intruded 0.68 and 1.49 mm in CA and FM, respectively. CA showed significant less root resorption and intrusion than FM. Overbite, bite closing, and MBF increased significantly. CA showed significantly less overbite and SN-MP changes but more MBF increase than FM. MBF in CA was correlated with the amount of maxillary molar intrusion (r = 0.736, P < .05).Conclusions: Maxillary molar intrusion and root resorption in CA were half the amount in FM in 6 months. The amount of maxillary molar root resorption was one-third of the intrusion distance. CA displayed less overbite increase and bite closing but more MBF increase than FM. MBF in CA was positively correlated with the molar intrusion amount.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"93 6","pages":"629-637"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10633803/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71435001","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}

引用次数: 0

Letters From Our Readers. 读者来信。

The Angle orthodontist Pub Date : 2023-11-01 DOI: 10.2319/1945-7103-93.6.750

Ruoyu Ning, Junjie Chen

引用次数: 0

Clear aligner biomechanical limitations: anchorage and couple (torque) development 明确对准器的生物力学限制:锚定和偶联(扭矩)发展

The Angle orthodontist Pub Date : 2023-09-01 DOI: 10.2319/1945-7103-93.5.615

N. Brezniak, A. Wasserstein, Noam E. Protter

引用次数: 0

List of 2022 Reviewers 2022年评审人员名单

The Angle orthodontist Pub Date : 2022-12-22 DOI: 10.2319/1945-7103-93.1.127

引用次数: 0

Does absence of maxillary lateral incisor affect the status of maxillary canine before and after secondary alveolar bone grafting in patients with unilateral alveolar cleft? 上颌侧切牙缺失是否影响单侧牙槽裂患者继发牙槽骨移植前后上颌犬牙的状态?

The Angle orthodontist Pub Date : 2022-05-13 DOI: 10.2319/102221-788.1

H. Hong, I. Yang, Jin-Young Choi, Jong-Ho Lee, J. Chung, Sukwha Kim, S. Baek

{"title":"Does absence of maxillary lateral incisor affect the status of maxillary canine before and after secondary alveolar bone grafting in patients with unilateral alveolar cleft?","authors":"H. Hong, I. Yang, Jin-Young Choi, Jong-Ho Lee, J. Chung, Sukwha Kim, S. Baek","doi":"10.2319/102221-788.1","DOIUrl":"https://doi.org/10.2319/102221-788.1","url":null,"abstract":"\u0000 \u0000 \u0000 To investigate whether absence of maxillary lateral incisor (MXLI) would affect the status of maxillary canine (MXC) before and after secondary alveolar bone grafting (SABG) in patients with unilateral cleft lip and alveolus (UCLA) and unilateral cleft lip and palate (UCLP).\u0000 \u0000 \u0000 \u0000 47 male patients with UCLA and UCLP, whose Bergland indices were type I or II after SABG, were divided into the MXLI-absence (n = 26) and MXLI-presence groups (n = 21). Using panoramic radiographs, the position, angulation, and development status of MXC on the cleft side, and the cleft width before SABG (T1) were evaluated. After full eruption of the permanent dentition (T2), the root length, root shape, and frequency of forced eruption of MXC on the cleft side were investigated. Then, statistical analysis was performed.\u0000 \u0000 \u0000 \u0000 Compared to the MXLI-presence group, the MXLI-absence group showed higher frequencies of mesial angulation of MXC at T1 (criteria: >25°; 46.2% vs 14.3%, P < .05) and dilaceration of MXC at T2 (26.9% vs 4.8%, P < .001). MXC on the cleft side showed positive correlations between horizontal position at T1 and forced eruption at T2, and between vertical position and mesial angulation at T1 and dilaceration at T2 (all P < .01).\u0000 \u0000 \u0000 \u0000 In patients with UCLA and UCLP whose SABG outcome was successful, absence of MXLI on the cleft side increased only the frequencies of mesial angulation of MXC at T1 and dilaceration of MXC at T2, not frequency of forced eruption at T2.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81301156","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}

引用次数: 1

Letter to the Editor. 给编辑的信。

The Angle orthodontist Pub Date : 2022-04-20 DOI: 10.2319/1945-7103-92.3.426

Sekar Santhosh Kumar, Shivangi Ramteke, B. Madhan

引用次数: 0

Response to the Letter. 对信的回应。

The Angle orthodontist Pub Date : 2022-04-20 DOI: 10.2319/1945-7103-92.3.427

Haya A Barsoum, H. ElSayed, Fouad A. El Sharaby, J. Palomo, Y. Mostafa

引用次数: 0