The Angle orthodontist最新文献_第9页

Correlation between oral cavity volume and upper airway changes in skeletal Class III patients undergoing bimaxillary orthognathic surgery: a pilot cone-beam computed tomography study 接受双颌正颌手术的骨骼Ⅲ级患者口腔容积与上气道变化之间的相关性：锥束计算机断层扫描试验研究

The Angle orthodontist Pub Date : 2024-04-22 DOI: 10.2319/112223-774.1

Gen Li, Zhenwei Chen, Yingyi Li, Guanhui Cai, Xiaolei Ruan, Ting Wang, Zhaolan Guan, Lian Sun, Wei Wang, Wen Sun, Hua Wang

{"title":"Correlation between oral cavity volume and upper airway changes in skeletal Class III patients undergoing bimaxillary orthognathic surgery: a pilot cone-beam computed tomography study","authors":"Gen Li, Zhenwei Chen, Yingyi Li, Guanhui Cai, Xiaolei Ruan, Ting Wang, Zhaolan Guan, Lian Sun, Wei Wang, Wen Sun, Hua Wang","doi":"10.2319/112223-774.1","DOIUrl":"https://doi.org/10.2319/112223-774.1","url":null,"abstract":"\u0000 \u0000 \u0000 To evaluate changes of the upper airway and oral cavity volumes in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery, and to analyze the correlation between postoperative upper airway decrease and the amount of jaw movement and oral cavity volume reduction.\u0000 \u0000 \u0000 \u0000 Thirty patients (16 males and 14 females) undergoing bimaxillary surgery were included. Three-dimensional reconstruction of the upper airway and oral cavity were performed using preoperative (T0) and postoperative (T1) (6 months) cone-beam computed tomography scans.\u0000 \u0000 \u0000 \u0000 The volume, sagittal area and minimum cross-sectional area of the upper airway were diminished (P < .001). The decrease in volume and minimum cross-sectional area in the oropharyngeal region of the upper airway were weakly correlated with B-point posterior movement (P < .05). Total oral cavity volume was decreased, with maxillary oral volume increasing and mandibular oral volume decreasing (P < .001). Upper airway decrease was highly correlated with total oral volume reduction and mandibular oral volume reduction, with the most significant correlation being with total oral volume reduction (P < .001).\u0000 \u0000 \u0000 \u0000 Class III bimaxillary surgery reduced the volume, sagittal area, and minimum cross-sectional area of the upper airway as well as oral cavity volume. Upper airway changes were weakly correlated with anterior-posterior mandibular movement but significantly correlated with oral cavity volume changes. Thus, oral cavity volume reduction is a crucial factor of upper airway decrease in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"32 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140674379","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}

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Changes in the upper airway and its surrounding structures after bimaxillary surgery in patients with cleft-related Class III deformity 唇裂相关 III 级畸形患者接受双颌手术后上气道及其周围结构的变化

The Angle orthodontist Pub Date : 2024-04-22 DOI: 10.2319/082523-579.1

Chung-Yi Ho, Ting-Chen Lu, Y. Hsieh, Chun-Shin Chang, Ying-An Chen, Yu-Fang Liao

{"title":"Changes in the upper airway and its surrounding structures after bimaxillary surgery in patients with cleft-related Class III deformity","authors":"Chung-Yi Ho, Ting-Chen Lu, Y. Hsieh, Chun-Shin Chang, Ying-An Chen, Yu-Fang Liao","doi":"10.2319/082523-579.1","DOIUrl":"https://doi.org/10.2319/082523-579.1","url":null,"abstract":"\u0000 \u0000 \u0000 To compare upper airway changes following bimaxillary surgery for correction of Class III deformity between patients with unilateral cleft lip and palate (UCLP) and bilateral cleft lip and palate (BCLP) and to compare the preoperative and postoperative upper airway among patients with UCLP and BCLP to healthy controls.\u0000 \u0000 \u0000 \u0000 Sixty adults with CLP-related skeletal Class III deformity (30 UCLP and 30 BCLP) who consecutively underwent bimaxillary surgery were studied retrospectively. Cone-beam computed tomography (CBCT) was performed before and after surgery to measure upper airway and movements of facial skeletal and surrounding structures. CBCT images from 30 noncleft skeletal Class I adults, matched by age, gender, and body mass index and without surgical intervention, served as controls.\u0000 \u0000 \u0000 \u0000 After surgery, the volume of the nasopharynx increased in patients with CLP (both P < .001). Patients with CLP did not differ from controls in postoperative volume of the nasopharynx or oropharynx. However, the nasal cavity differed significantly between patients with CLP and controls (P < .001).\u0000 \u0000 \u0000 \u0000 After bimaxillary surgery, the nasal cavity of patients with CLP differed significantly compared with the controls. Volumes of the nasopharynx and oropharynx did not differ between patients with CLP after surgery and controls.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"15 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140673721","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}

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"Digital orthodontics" or just "orthodontics"? "数字正畸 "还是仅仅 "正畸"？

The Angle orthodontist Pub Date : 2024-04-19 DOI: 10.2319/1945-7103-94.3.369

Andre Wilson Machado

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Anna Hopkins Angle: a remembrance. 安娜-霍普金斯-安格尔：回忆。

The Angle orthodontist Pub Date : 2024-04-19 DOI: 10.2319/1945-7103-94.3.366

James J. Zahrowski

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Letters From Our Readers. 读者来信

The Angle orthodontist Pub Date : 2024-04-19 DOI: 10.2319/1945-7103-94.3.370

Philip Benson

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Letters From Our Readers. 读者来信

The Angle orthodontist Pub Date : 2024-04-19 DOI: 10.2319/1945-7103-94.3.371

Karim Gamal Elias, Gautham Sivamurthy, David R Bearn

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Wilson curve modification in permanent dentition: a retrospective comparison between clear aligners and continuous archwire treatment 恒牙的威尔逊曲线修正：透明矫治器与连续弓丝治疗的回顾性比较

The Angle orthodontist Pub Date : 2024-04-03 DOI: 10.2319/101123-691.1

R. Lione, F. C. De Razza, F. Gazzani, P. Cozza, C. Pavoni

{"title":"Wilson curve modification in permanent dentition: a retrospective comparison between clear aligners and continuous archwire treatment","authors":"R. Lione, F. C. De Razza, F. Gazzani, P. Cozza, C. Pavoni","doi":"10.2319/101123-691.1","DOIUrl":"https://doi.org/10.2319/101123-691.1","url":null,"abstract":"\u0000 \u0000 \u0000 To evaluate leveling of the Curve of Wilson (COW) by two different treatment appliances (clear aligners [CA] and continuous archwire fixed appliances [FA]) in a permanent dentition sample of patients.\u0000 \u0000 \u0000 \u0000 Digital casts of 40 patients (CA group = 20 patients; FA group = 20 patients) were collected. Angular values for COW, right and left vertical height difference of lower first molars, and linear distance between lower teeth and the WALA ridge were analyzed for pre- (T1), posttreatment (T2) and on final virtual (ClinCheck) models (T2-CC) of the CA group. An unpaired t-test was used to evaluate significant intergroup differences (P < .05), while a paired t-test was used for posttreatment CA intragroup comparison.\u0000 \u0000 \u0000 \u0000 FA group showed better control of second molar crown positions compared to CA group (47-WALA = −0.2 ± 0.1 mm, 37-WALA = −0.6 ± 0.3 mm). No significant difference was detected for linear distance of lower first molars and the WALA ridge or for vertical height difference. CA group showed a greater reduction of distance between lower premolars and the WALA ridge (mean difference: –0.5 mm for both 45-WALA and 35-WALA; mean difference: −0.5 mm for 44-WALA, −0.6 mm for 34-WALA). Predictability for the CA group was high for every measurement (87% Right COW, 89% Left COW, 88% 46 Vertical Diff, 87% 36 Vertical Diff).\u0000 \u0000 \u0000 \u0000 Clear aligner and continuous archwire mechanics were effective in leveling COW. FA was more effective in changing crown position of lower second molars with respect to the WALA ridge, while CA provided a greater distance reduction between lower premolars and WALA ridges compared to FA.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"950 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748989","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}

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Evaluation of nasal septal deviation and maxillary bone and nasal airway dimensions and volumes using cone-beam computed tomography in patients with unilateral palatal canine displacement: a retrospective study 使用锥形束计算机断层扫描评估单侧腭犬牙移位患者的鼻中隔偏曲、上颌骨和鼻腔气道尺寸和体积：一项回顾性研究

The Angle orthodontist Pub Date : 2024-03-11 DOI: 10.2319/110523-736.1

Safa A. Azim Osman, Elham Abu Alhaija, Ahed M. Alwahadni, Emad Al Maaitah, Saba O. Daher, Hasan O. Daher, Hamza AlTal

{"title":"Evaluation of nasal septal deviation and maxillary bone and nasal airway dimensions and volumes using cone-beam computed tomography in patients with unilateral palatal canine displacement: a retrospective study","authors":"Safa A. Azim Osman, Elham Abu Alhaija, Ahed M. Alwahadni, Emad Al Maaitah, Saba O. Daher, Hasan O. Daher, Hamza AlTal","doi":"10.2319/110523-736.1","DOIUrl":"https://doi.org/10.2319/110523-736.1","url":null,"abstract":"\u0000 \u0000 \u0000 To detect any association between palatally displaced canine (PDC) and nasal septal deviation (NSD), palatal bone thickness and volume, and nasal airway dimensions and volume.\u0000 \u0000 \u0000 \u0000 A total of 92 patients were included and subdivided into two groups: group 1, unilateral PDCs (44 patients), and group 2, normally erupted canines (NDCs) (48 subjects). The following variables were measured using cone-beam computed tomography: presence and type of NSD, nasal width, inferior conchae, hard palate and nasal septum thickness, maxillary bone and nasal airway volumes.\u0000 \u0000 \u0000 \u0000 NSD was detected in 77% and 50% of PDC and NDC subjects, respectively. Within the PDC subjects, significant differences between the displaced and nondisplaced sides were detected. Palate thickness was increased in the canine region and reduced in the molar region. Compared with the control group, PDC subjects had reduced palate thickness and lower nasal airway volume. Two predictors were significant for predicting the odds of PDC occurrence: NSD and maxillary bone volume.\u0000 \u0000 \u0000 \u0000 NSD is more frequent in PDC subjects. PDC subjects have reduced palate thickness and decreased nasal airway volume. In the presence of NSD, the odds of developing PDC increase by 3.35 times, and for each one-unit increase in the maxillary bone volume, the odds of developing PDC decrease by 20%.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"12 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140252446","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}

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Does facial growth pattern affect the perception of lower facial asymmetry? 面部生长模式是否会影响对面部下部不对称的感知？

The Angle orthodontist Pub Date : 2024-03-11 DOI: 10.2319/092823-656.1

Ece Basal, Ismail Cevik, Yasemin Bahar Acar, Fulya Özdemir

{"title":"Does facial growth pattern affect the perception of lower facial asymmetry?","authors":"Ece Basal, Ismail Cevik, Yasemin Bahar Acar, Fulya Özdemir","doi":"10.2319/092823-656.1","DOIUrl":"https://doi.org/10.2319/092823-656.1","url":null,"abstract":"\u0000 \u0000 \u0000 To investigate the influence of vertical facial type on esthetic perception of lower facial asymmetry as evaluated by orthodontists, dentists, and laypeople.\u0000 \u0000 \u0000 \u0000 Three adult females were selected with normal growth patterns (NGP), vertical growth patterns (VGP), and horizontal growth patterns (HGP). Frontal photographs were made symmetric and digitally altered, rotating the lower facial third clockwise, ranging from 0° to 6° in 1° increments. A web-based survey was designed with 24 images (eight images for each model) in random order. Each image was rated using a scale ranging from 0 (unattractive) to 10 (the most attractive) by 75 orthodontists, 73 dentists, and 78 laypeople. Kruskal-Wallis test was used to determine whether differences among groups were significant. Pairwise comparisons were made with Mann-Whitney U test. The significance level was set at P = .05.\u0000 \u0000 \u0000 \u0000 In NGP, orthodontists and dentists could recognize slighter deviations (2°), while deviations in VGP and HGP under 3° were not recognized by all groups. Severe deviations (≥4°) were distinguished better in HGP by orthodontists and laypeople. In VGP and NGP, there was no significant difference over 4°.\u0000 \u0000 \u0000 \u0000 Growth pattern has a significant influence on perception of lower facial asymmetry. Less severe asymmetry can be detected better in NGP. In severe degrees, increments of asymmetry can be perceived more in HGP by orthodontists and laypeople.\u0000","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140253275","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}

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Comparison of labio-palatal incisor movement between two wear protocols: a retrospective cohort study. 两种佩戴方案对唇腭切牙运动的比较：一项回顾性队列研究。

The Angle orthodontist Pub Date : 2024-03-01 DOI: 10.2319/063023-458.1

Max Wei, Tony Weir, Brett Kerr, Elissa Freer

{"title":"Comparison of labio-palatal incisor movement between two wear protocols: a retrospective cohort study.","authors":"Max Wei, Tony Weir, Brett Kerr, Elissa Freer","doi":"10.2319/063023-458.1","DOIUrl":"10.2319/063023-458.1","url":null,"abstract":"Objectives: To investigate the accuracy of the Invisalign appliance in achieving predicted angular tooth movement of the maxillary central incisors, to locate the center of rotation in a labio-palatal direction, and to investigate any difference between 1-weekly and 2-weekly wear protocols.Materials and methods: This study involved a retrospective sample of two groups of 46 Class I adult subjects treated non-extraction with different protocols of 1-weekly and 2-weekly wear. The pretreatment, predicted outcome and achieved outcome digital models were superimposed and measured using metrology software. Angular and center-of-rotation measurements in the sagittal plane for the maxillary right central incisor were analyzed.Results: There was a statistically significant difference between predicted and achieved angular measurements (P < .005) for labial tooth movements regardless of wear protocol. For palatal movements, no statistically significant difference was observed (P > .05). A small amount of overexpression was observed in some cases. Regarding crown and root control, uncontrolled tipping was the most predictable. No statistically significant difference was found between predicted and achieved center of rotation, but the confidence interval was wide. No statistically significant difference (P > .05) was found between the two wear protocols for the parameters measured.Conclusions: For maxillary central incisors, labial angular movements were not as accurate as palatal movements. Overcorrection could be recommended with careful clinical monitoring due to the possibility of overexpression. Control of root movements may be unpredictable, and further research is required to draw stronger conclusions. For the parameters measured in this clinical sample, there was no difference between the two wear protocols.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":"151-158"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10893922/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71416439","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