American journal of orthodontics最新文献_第5页

Symptoms of TMJ dysfunction: Indicators of growth patterns? 颞下颌关节功能障碍的症状:生长模式的指标?

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90080-1

Tom Zwemer

引用次数: 4

The eruption pattern of the permanent incisors and first permanent molars in australopithecus (Parathropus) Robustus, 南方古猿(副矫形)粗壮种恒切牙和第一恒磨牙的出牙模式

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90082-5

Tom Zwemer

引用次数: 1

Computer-aided modeling in the assessment of the biomechanical determinants of diverse skeletal patterns 计算机辅助建模评估不同骨骼形态的生物力学决定因素

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90068-0

B. Haskell D.M.D., Ph.D. , M. Day Ph.D. , J. Tetz D.M.D., M.S.

{"title":"Computer-aided modeling in the assessment of the biomechanical determinants of diverse skeletal patterns","authors":"B. Haskell D.M.D., Ph.D. , M. Day Ph.D. , J. Tetz D.M.D., M.S.","doi":"10.1016/0002-9416(86)90068-0","DOIUrl":"10.1016/0002-9416(86)90068-0","url":null,"abstract":"<div><p>Aberrant functional patterns of the masticatory musculature have been alleged as a factor influencing the morphogenesis of mandibular dysplasias. These include such expressions as the hyperdivergent skeletal open bite and its counterpart, the hypodivergent skeletal deep bite. A lack of anatomic data dealing with the actual musculoskeletal orientations of these types has resulted in speculative reports on divergent anatomy and its purported effects. In this study anatomic dissections of a hyperdivergent and a hypodivergent human cadaver illustrated that skeletally dysmorphic types possess different spatial orientations of the masticatory adductors in relation to dentofacial structures. A two-dimensional analysis of static equilibrium using computer-aided modeling demonstrated that these two types produce biomechanically distinct modes of muscle action. Temporalis activity must be 40% higher in the hyperdivergent model as compared with its counterpart to produce a biting force of 500 N (112 lb). The data suggest a rationale for the weak biting forces previously reported in long-faced persons when compared with horizontally developed subjects. The direction of condylar reaction force was also found to vary from a vertical orientation in the hyperdivergent model to oblique in the hypodivergent model. “Physis-like” behavior of the condyle, which can orient axially toward loading forces, may present an explanation for the reported differences in the direction of condylar growth in dysmorphic persons. A finite element analysis pictured distinct regions of deformation and compression in a novel perspective to help evaluate the currency of accepted hypotheses of stress-induced osteogenesis. The data support previous work reporting a latent geometric interdependency existing between muscle orientation and mandibular morphology.</p></div>","PeriodicalId":75476,"journal":{"name":"American journal of orthodontics","volume":"89 5","pages":"Pages 363-382"},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0002-9416(86)90068-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14582316","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: 76

A clinical assessment of the Active Vertical Corrector—A nonsurgical alternative for skeletal open bite treatment 主动垂直矫正器的临床评估-骨骼开咬治疗的非手术选择

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90075-8

Eugene L. Dellinger D.D.S., M.S.D.

引用次数: 157

Localized, transverse, flexural stiffnesses of continuous arch wires 连续拱丝的局部、横向、弯曲刚度

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90072-2

J.G. Schaus D.D.S., M.S. , R.J. Nikolai Ph.D.

引用次数: 26

Craniofacial dysmorphology studies in honor of samuel pruzansky 颅面畸形学研究以纪念塞缪尔·普鲁赞斯基

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90079-5

Tom Zwemer

引用次数: 0

Personality characteristics as predictors and sequelae of surgical and conventional orthodontics 人格特征作为外科和传统正畸的预测因素和后遗症

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90069-2

H.Asuman Kiyak Ph.D. , R.William McNeill D.D.S., M.S. , Roger A. West D.M.D. , Thomas Hohl D.D.S. , Patricia J. Heaton B.A.

{"title":"Personality characteristics as predictors and sequelae of surgical and conventional orthodontics","authors":"H.Asuman Kiyak Ph.D. , R.William McNeill D.D.S., M.S. , Roger A. West D.M.D. , Thomas Hohl D.D.S. , Patricia J. Heaton B.A.","doi":"10.1016/0002-9416(86)90069-2","DOIUrl":"10.1016/0002-9416(86)90069-2","url":null,"abstract":"<div><p>The aims of this study were to determine the effects of surgical and conventional orthodontics on patients' body image and self-esteem and the association between personality characteristics and postoperative reports of pain, paresthesia, swelling, and satisfaction among 90 patients who underwent surgical orthodontics. Patients who underwent surgery completed questionnaires before their operations and up to 6 months after surgery. Self-esteem and body image were compared longitudinally between these patients and 33 persons who were undergoing orthodontic treatment only and 33 persons who had decided against treatment. Results suggest that patients' self-esteem, body image, and degree of extroversion are unrelated to postsurgical satisfaction and discomfort. Neuroticism was correlated with satisfaction, so that patients who scored in the higher range on a scale of neuroticism were less satisfied immediately after surgery and at removal of fixation wires. Neurotic patients also were more likely to complain of pain and swelling 6 months after surgery. Surgical patients held a more negative facial image and were more introverted than those in the other two groups but were similar in other personality traits before surgery. Both surgical and orthodontic patients improved significantly in body image over time, with the greatest increase among the former. Similar shifts in self-esteem occurred for the three groups, suggesting that surgery per se may not be the major determinant of longitudinal changes in self-esteem. Notably, the positive effect of surgery and orthodontic treatment on body image is an important motive for many persons seeking treatment. Results of this study provide important insights into how to prepare and counsel patients undergoing orthodontic treatment with and without surgery.</p></div>","PeriodicalId":75476,"journal":{"name":"American journal of orthodontics","volume":"89 5","pages":"Pages 383-392"},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0002-9416(86)90069-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14582317","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: 81

The mandible in mandibulofacial dysostosis: A cephalometric study 颌面部骨缺损的下颌骨:一项头颅测量研究

American journal of orthodontics Pub Date : 1986-05-01 DOI: 10.1016/0002-9416(86)90070-9

Barry H. Grayson D.D.S., Fred L. Bookstein Ph.D., Joseph G. McCarthy M.D.

引用次数: 22

Variations in skeletal and dental patterns in patients with structural and functional alterations of the temporomandibular joint: A preliminary report 颞下颌关节结构和功能改变患者骨骼和牙齿形态的变化:初步报告

American journal of orthodontics Pub Date : 1986-04-01 DOI: 10.1016/0002-9416(86)90050-3

H.G. Stringert D.D.S. M.S. , F.W. Worms D.D.S. M.S.D.

{"title":"Variations in skeletal and dental patterns in patients with structural and functional alterations of the temporomandibular joint: A preliminary report","authors":"H.G. Stringert D.D.S. M.S. , F.W. Worms D.D.S. M.S.D.","doi":"10.1016/0002-9416(86)90050-3","DOIUrl":"10.1016/0002-9416(86)90050-3","url":null,"abstract":"<div><p>Cephalometric and clinical examination data from a group of 62 subjects with documented structural and functional changes in the temporomandibular joint were compared with that of a group of 102 subjects from a normative sample. The purpose of the study was twofold: (1) to provide a description of a sample of subjects with documented TMJ alterations and (2) to make cephalometric comparisons between this sample and a sample of control subjects from the general population. Results indicated an increased proportion of subjects with “high plane” characteristics and a decreased proportion of subjects with “low plane” characteristics in the experimental sample, but little or no differences in dental and occlusal parameters were found. There were no differences in the proportions or characteristics of subjects in any Angle classification group. There was a tendency, based solely on descriptive statistics, for the group of experimental subjects with negative trauma histories to exhibit an increased proportion of “division 2” incisal relationships.</p></div>","PeriodicalId":75476,"journal":{"name":"American journal of orthodontics","volume":"89 4","pages":"Pages 285-297"},"PeriodicalIF":0.0,"publicationDate":"1986-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0002-9416(86)90050-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14580314","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: 55

Dentofacial orthopedics with functional appliances 牙面矫形与功能器具

American journal of orthodontics Pub Date : 1986-04-01 DOI: 10.1016/0002-9416(86)90064-3

Robert Shaye

引用次数: 136