Orthodontic Waves最新文献_第6页

Root-crown ratio: a new method for measurement of orthodontic external apical root resorption 根冠比:一种测量正畸外根尖吸收的新方法

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Orthodontic Waves Pub Date : 2020-02-10 DOI: 10.1080/13440241.2020.1712823

D. Gupta, K. Aggarwal

{"title":"Root-crown ratio: a new method for measurement of orthodontic external apical root resorption","authors":"D. Gupta, K. Aggarwal","doi":"10.1080/13440241.2020.1712823","DOIUrl":"https://doi.org/10.1080/13440241.2020.1712823","url":null,"abstract":"ABSTRACT Purpose: External Apical Root Resorption (EARR) is an undesirable but unavoidable side effect of orthodontic treatment. The various methods proposed for its evaluation, e.g. Intraoral Periapical (IOPA) X-ray and Orthopantomogram (OPG) x-rays use linear measurements which have errors due to magnification and angulations of x-rays. Root-crown ratio as measured on digital OPGs, which are essential diagnostic records for all orthodontic patients were used for the first time to assess root resorption. Methods: A two-step method was used, first to check the v alidation of OPG measurement with IOPA x rays. The first step involved the measurement of Root-crown ratio on digital OPG and IOPA by 5 independent examiners on IC measure software. The second step involved the measurement of root resorption as Root-crown ratio on pretreatment and post-treatment OPG X rays of 32 treated orthodontic patients all of which were treated by a single orthodontist. Digital OPG images of all patients were traced in Picassa software. In both steps, root-crown ratio was assessed by modified Lind method. Results: The results of first step did not show any significant differences in examiners to read the IOPA and OPG x rays. The results of the second step showed 11.8% root resorption in maxillary central incisors and 4% root resorption in lateral incisors. Similarly, maxillary and mandibular molars showed 1.6% and 5.1% resorption, respectively. The resorption in mandibular molars was significantly more compared to pretreatment value. There was apparently no effect of extraction treatment or treatment time on the amount of resorption. Conclusion: The study concluded that root-crown ratio can be used as an effective and efficient alternative method to quantify root resorption on OPG X rays and possibly alleviate the need for taking IOPA x rays in orthodontic patients thereby reducing the radiation exposure.","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"79 1","pages":"23 - 29"},"PeriodicalIF":0.4,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13440241.2020.1712823","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47847226","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: 2

Correlation of palatal volume with nasopharyngeal volume on computed tomography scans of an Iranian subpopulation 伊朗亚群计算机断层扫描中腭体积与鼻咽体积的相关性

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Orthodontic Waves Pub Date : 2020-02-07 DOI: 10.1080/13440241.2020.1712822

Ali Moshajari, Azin Irannezhad, Z. Kajan, N. K. Nasab, E. Rafiei, Pejman Kiani

{"title":"Correlation of palatal volume with nasopharyngeal volume on computed tomography scans of an Iranian subpopulation","authors":"Ali Moshajari, Azin Irannezhad, Z. Kajan, N. K. Nasab, E. Rafiei, Pejman Kiani","doi":"10.1080/13440241.2020.1712822","DOIUrl":"https://doi.org/10.1080/13440241.2020.1712822","url":null,"abstract":"ABSTRACT Purpose: The nasopharynx is a common site of airway obstruction; thus, it is important to assess the nasopharyngeal airway dimensions. This study aimed to assess the correlation of the palatal volume with the nasopharyngeal volume on computed tomography (CT) scans of patients with different facial morphological patterns. Materials and Methods: This cross-sectional study evaluated 93 CT scans of patients. The patients were divided into three groups based on the ANB angle, namely class I (2°≤ANB≤4°), class II (ANB>4°) and class III (ANB<2°). According to the lower anterior facial height/anterior facial height ratio, the patients were divided into three groups of high angle (hyperdivergent, >0.55), low angle (hypodivergent, <0.55) and normal (0.55). The CT scans of patients were analysed to measure the nasopharyngeal volume, palatal volume, palatal height, maxillary width, intercanine width and intermolar width. Data were analysed using the Pearson’s correlation test, ANOVA, independent t-test and Kruskal–Wallis test. Results: No significant correlation existed between the palatal volume and the nasopharyngeal volume (P = 0.806). The maxillary width (P = 0.971), palatal height (P = 0.945), intercanine width (P = 0.320) and intermolar width (P = 0.478) had no significant correlation with the nasopharyngeal volume either. The nasopharyngeal volume was not significantly different in the three classes of malocclusion (P = 0.987) and different facial height patterns (P = 0.331). Conclusion: The palatal volume had no significant correlation with the nasopharyngeal volume. The nasopharyngeal volume was not significantly different in patients with different patterns of facial morphology.","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"79 1","pages":"31 - 38"},"PeriodicalIF":0.4,"publicationDate":"2020-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13440241.2020.1712822","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44981562","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

Influence of orthodontic appliances on visual attention to smiling faces by eye-tracking evaluation 眼动追踪评价正畸矫治器具对笑脸视觉注意的影响

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.08.002

Yoshiko Matsumura, Kazuhito Arai

{"title":"Influence of orthodontic appliances on visual attention to smiling faces by eye-tracking evaluation","authors":"Yoshiko Matsumura, Kazuhito Arai","doi":"10.1016/j.odw.2019.08.002","DOIUrl":"10.1016/j.odw.2019.08.002","url":null,"abstract":"<div><p><span>The influence of wearing orthodontic<span> appliances on visual attention to smiling faces is not well understood. The purpose of this study was to investigate how laypeople viewed a frontal posed smiling face with orthodontic appliances compared with orthodontists. Frontal posed smiling facial photographs of 10 female models without an appliance or wearing clear tray, ceramic, or metal appliances were taken, and areas of interest (AOIs) for the eyes, nose, and mouth were determined. Visual attention from 43 laypeople and 42 orthodontists was evaluated for each image using an eye-tracking system. Total fixation time for each AOI was calculated and analyzed by three-way repeated measures analysis of variance and Tukey–Kramer multiple comparison tests (</span></span><em>P</em><span> < 0.05). The layperson group spent significantly more time looking at the mouth with ceramic and metal brackets than without brackets, similar to the orthodontist group (P < 0.001 and 0.001, respectively). Though the orthodontist group spent significantly more time looking at the mouth with metal brackets than the mouth with ceramic brackets (P < 0.040), no significant difference was noted in the layperson group. Under all appliance conditions, the layperson group spent significantly more and less time looking at the eyes and mouth than the orthodontist group, respectively (P < 0.001 and 0.001, respectively). These findings suggest that it may help patients who will start orthodontic treatment to understand an individual’s interest in the appearance of the orthodontic appliance, and orthodontists to counsel patients at the orthodontic appliance selection stage during the diagnosis.</span></p></div>","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"78 4","pages":"Pages 135-142"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.odw.2019.08.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48235200","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

Biosafety, stability, and osteogenic activity of novel implants made of Zr70Ni16Cu6Al8 bulk metallic glass for biomedical application 新型生物医学用Zr70Ni16Cu6Al8大块金属玻璃植入物的生物安全性、稳定性和成骨活性

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.09.003

H. Ida , M. Seiryu , N. Takeshita , M. Iwasaki , Y. Yokoyama , Y. Tsutsumi , E. Ikeda , S. Sasaki , S. Miyashita , S. Sasaki , T. Fukunaga , T. Deguchi , T. Takano-Yamamoto

引用次数: 0

Role of Osteocyte-PDL Crosstalk in Tooth Movement via SOST/Sclerostin 骨细胞- pdl串扰通过SOST/Sclerostin在牙齿运动中的作用

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.09.002

N. Odagaki , Y. Ishihara , Z. Wang , E. Ei Hsu Hlaing , M. Nakamura , M. Hoshijima , S. Hayano , N. Kawanabe , H. Kamioka

引用次数: 0

Analysis of craniofacial character of glucose transporter type I deficiency syndrome 葡萄糖转运体I型缺乏综合征颅面特征分析

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.10.002

Shinsuke Itoh , Hiroshi Kurosaka , Yuka Murata , Chisato Morita , Kuriko Kagitani-Shimono , Shin Nabatame , Keiichi Ozono , Takashi Yamashiro

{"title":"Analysis of craniofacial character of glucose transporter type I deficiency syndrome","authors":"Shinsuke Itoh , Hiroshi Kurosaka , Yuka Murata , Chisato Morita , Kuriko Kagitani-Shimono , Shin Nabatame , Keiichi Ozono , Takashi Yamashiro","doi":"10.1016/j.odw.2019.10.002","DOIUrl":"10.1016/j.odw.2019.10.002","url":null,"abstract":"<div><p><span><span>Patients with congenital craniofacial anomalies often require </span>orthodontic<span><span> treatment to correct </span>malocclusion<span><span><span>. Numerous case reports about craniofacial anomalies have been published, but for many syndromic diseases the pathology of malocclusion and/or solutions for it remain elusive. In this study, we investigated craniofacial features as well as orthodontic treatment outcomes of patients with glucose transporter 1 deficiency syndrome (GLUT1-DS), which is an </span>autosomal dominant<span> genetic disease. Cross sectional study<span> was performed using 9 GLUT1-DS patients, aged from 8 to 49 years old. All of the participants underwent intraoral and radiographic examinations. Lateral </span></span></span>cephalogram measurement was performed for investigating possible craniofacial features in GLUT1-DS patients. Most of them showed skeletal discrepancy with large </span></span></span>overjet. Some patients had a history of trauma to their maxillary incisor(s). In order to correct the patients’ malocclusion, we employed conventional orthodontic appliances and obtained good treatment outcomes. Based on these results, we summarized features associated with the deficiency of GLUT1-DS and also showed the benefit of correcting the malocclusion using conventional orthodontic procedures. Through this report, we showed the craniofacial characteristics and malocclusion of the GLUT1-DS patient which could be treated with conventional orthodontic approach.</p></div>","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"78 4","pages":"Pages 151-159"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.odw.2019.10.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46202066","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: 0

Nasal obstruction during adolescence induces memory/learning impairments associated with BDNF/TrkB signaling pathway hypofunction and high corticosterone levels 青春期鼻塞导致与BDNF/TrkB信号通路功能低下和高皮质酮水平相关的记忆/学习障碍

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.09.004

T. Ogawa , H. Okihara , S. Kokai , Y. Abe , U.K. Karin Harumi , M. Makiguchi , C. Kato , T. Yabushita , M. Michikawa , T. Ono

引用次数: 0

A three-dimensional analysis of masticatory muscles in laterognathism 后颌畸形咀嚼肌的三维分析

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.09.010

Kanako Imamura , Masahiko Terajima , Akihiko Nakashima , Ichiro Takahashi

{"title":"A three-dimensional analysis of masticatory muscles in laterognathism","authors":"Kanako Imamura , Masahiko Terajima , Akihiko Nakashima , Ichiro Takahashi","doi":"10.1016/j.odw.2019.09.010","DOIUrl":"10.1016/j.odw.2019.09.010","url":null,"abstract":"<div><h3>Purpose</h3><p><span>By using three-dimensional (3-D) CT imaging, the maxillofacial bones and muscles can be observed from any desired angles and analyzed the bone and muscles simultaneously. However, no studies have investigated the three dimensional analysis of muscles in jaw deformity<span>. The purpose of this study was to examine the relationship between the morphology of the masticatory muscles and the craniofacial </span></span>skeleton in the patients with facial asynmetry.</p></div><div><h3>Methods</h3><p>Eight Japanese normal female adults and 10 female adult patients with laterognqthism were participated in this study. The 3-D CT images of their craniofacial skeleton and masseter, medial pterygoid and lateral pterygoid muscles were recon-structed. Then, 6 skeletal and 7 muscle variables were measured for each subject.</p></div><div><h3>Results</h3><p>Significant positive correlations were found among the volume of the masti-catory muscles in the normal adults, but not found in patients with mandibular laterognathism. The muscular variables showed significant positive correlations with skeletal variables in normal subjects, but few significant correlations were found in the patients with laterognathism.</p></div><div><h3>Conclusions</h3><p>This study suggestted that the balance between masticatory muscles and the balance between muscles and skeleton collapsed in the patients with mandibu-lar laterognathism.</p></div>","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"78 4","pages":"Pages 143-150"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.odw.2019.09.010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48703558","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

Treatment of concomitant geminated and fused maxillary central incisors: A 5-year follow-up 上颌中切牙合并生裂融合的治疗:5年随访

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.10.001

Taiana Oliveira Baldo , Daniella Prado Ferreira , André Ferreira , Gladys Cristina Dominguez

引用次数: 1

Relationship between pre-treatment orthodontic case complexities and their treatment outcomes 正畸治疗前复杂性与治疗效果的关系

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Orthodontic Waves Pub Date : 2019-12-01 DOI: 10.1016/j.odw.2019.10.003

K. Tantipanichkul, Supatchai Boonpratham, Nathaphon Tangjit, Suwannee Luppanapornlarp

{"title":"Relationship between pre-treatment orthodontic case complexities and their treatment outcomes","authors":"K. Tantipanichkul, Supatchai Boonpratham, Nathaphon Tangjit, Suwannee Luppanapornlarp","doi":"10.1016/j.odw.2019.10.003","DOIUrl":"10.1016/j.odw.2019.10.003","url":null,"abstract":"<div><h3>Purpose</h3><p>To determine whether pre-treatment orthodontic case complexities were associated with their treatment outcomes in each category of malocclusion.</p></div><div><h3>Materials and methods</h3><p>Two hundred orthodontic cases treated with edgewise appliances from university clinic that satisfied requirements for the certification were studied. The Discrepancy Index (DI) and the Objective Grading System (OGS) were calculated. The relationship between these measurements was evaluated using Pearson’s correlation coefficient.</p></div><div><h3>Results</h3><p>The mean DI score was 23.67 ± 10.30, and the mean OGS score was 19.92 ± 6.92. Statistically, there was only a weak and insignificant correlation between the DI and OGS (r = 0.055, p > 0.05). Buccolingual inclinations and interproximal contacts were components that had the highest and lowest mean OGS scores respectively.</p></div><div><h3>Conclusion</h3><p>Malocclusion complexity was not associated with orthodontic treatment outcomes. Cases which underwent two-phase treatment were found to have the most complex pre-treatment malocclusion and also the most unsatisfactory clinical outcomes. The OGS component with the highest discrepancies was buccolingual inclinations.</p></div>","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"78 4","pages":"Pages 160-168"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.odw.2019.10.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46159331","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: 0