Informationen aus Orthodontie und Kieferorthopaedie最新文献_第5页

[Predictability using the "Dentofacial Planner Version 4.22 A" of soft tissue changes following adult orthodontic treatment]. [使用“牙面计划4.22 A版”预测成人正畸治疗后软组织变化]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1990-01-01

H Fischer-Brandies, H Seeholzer, E Fischer-Brandies, I Bauerfeind

引用次数: 0

[Herbst appliance in modern orthodontics]. [现代正畸中的赫布斯特矫治器]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

H Pancherz

引用次数: 0

[Morphology and position of mandible in Herbst treatment. Cephalometric analysis of changes to end of growth period]. 下颌骨的形态和位置在Herbst治疗中的应用。生长期末期变化的头侧测量分析]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

H Pancherz, C Littmann

{"title":"[Morphology and position of mandible in Herbst treatment. Cephalometric analysis of changes to end of growth period].","authors":"H Pancherz, C Littmann","doi":"","DOIUrl":"","url":null,"abstract":"The purpose of this investigation was to analyse mandibular morphologic and jaw position changes in Herbst treatment on a short and long term basis. The patient material consisted of 12 boys with a Class II, Division 1 malocclusion treated with the Herbst appliance for a period of 6 months. The subjects were examined before treatment, after treatment, 1 year after treatment and at completion of growth (7 years after treatment). 10 boys with the same malocclusion as the Herbst cases served as controls. The method comprised of an analysis of profile roentgenograms in centric occlusion and with the mouth wide open. Herbst treatment resulted in an increase in jaw length and mandibular prognathism. The gonion angle was opened. These changes were accomplished by an increase in sagittal condylar growth and by bone resorption at the posterior part of the mandibular lower border. During the follow up period after removal of the Herbst appliance the treatment changes reverted and were comparable to those of the control subjects. No statistically significant long-term influence of Herbst treatment on mandibular morphology and jaw position could be verified.","PeriodicalId":40971,"journal":{"name":"Informationen aus Orthodontie und Kieferorthopaedie","volume":"21 4","pages":"493-513"},"PeriodicalIF":0.1,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13779183","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

[Evaluation of results of surgical orthodontic treatment of retained canines]. [保留犬的外科正畸治疗效果评价]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

W Harzer, Y M Mahdi, A Reinhardt, H Tellkamp

引用次数: 0

[Influence of functional orthodontic appliance on bite force of a patient]. 功能性正畸矫治器对患者咬合力的影响

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

A Weinreich

引用次数: 0

[Enamel abrasion and enamel tears by porcelain brackets]. [瓷托架造成的牙釉质磨损和牙釉质撕裂]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

H Newesely, B Rossiwall

{"title":"[Enamel abrasion and enamel tears by porcelain brackets].","authors":"H Newesely, B Rossiwall","doi":"","DOIUrl":"","url":null,"abstract":"Orthodontic brackets manufactured of poly- or monocrystalline alumina ceramics are aesthetically appealing, but unfortunately show disadvantages for clinical application primarily causing (1) Abrasions of the enamel of antagonistic teeth, and (2) Tear-outs of the underlying enamel through debonding. To determine whether hardness and/or textural and structural qualities of the ceramics (as characterized by SEM investigations) are responsible for the deleterious clinical effects of abrasion, the amount of decrease of the height of human enamel-molar-cusps was measured. Enamel loss was shown to be significantly more than 100 microns at 10 min. operating time in an abrasive testing device. Also debonding of the ceramic brackets proved to be problematic. Whereas metals and polymeric brackets allow some deflection of the material in addition to the tensile stress, separating the bracket from the enamel at the bracket-to-adhesive interface, or within the adhesive composite, the lacking workability in the ceramic brackets may induce a shift of the break-line during debonding to the adhesive-enamel interface or even into the dental enamel. Development and clinical application of ceramic brackets should improve safety for the enamel. Regardless of ceramic brand the abrasiveness endangers enamel through ceramic/enamel interferences. To avoid tear-out defects, brackets should debond at the ceramic-adhesive interface.","PeriodicalId":40971,"journal":{"name":"Informationen aus Orthodontie und Kieferorthopaedie","volume":"21 4","pages":"577-94"},"PeriodicalIF":0.1,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13840322","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

[Tooth mobility after orthodontic multiband treatment]. [正畸多波段治疗后的牙齿活动度]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

E G Sander, M Frohls

引用次数: 0

[Different applications of various wire alloys in fixed appliance technic]. 【各种丝合金在固定器具工艺中的不同应用】。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

H P Bantleon, H Droschl, G Stern

引用次数: 0

[Tooth-mandible-displacement complex]. (Tooth-mandible-displacement复杂)。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

Z Gajda

引用次数: 0

[Stress distribution in the periodontal ligament induced by orthodontic forces. Use of finite-element method]. 正畸力引起的牙周韧带应力分布。运用有限元法]。

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Informationen aus Orthodontie und Kieferorthopaedie Pub Date : 1989-01-01

K Tanne, H P Bantleon

{"title":"[Stress distribution in the periodontal ligament induced by orthodontic forces. Use of finite-element method].","authors":"K Tanne, H P Bantleon","doi":"","DOIUrl":"","url":null,"abstract":"This study was designed to investigate the stress levels induced in the periodontal tissue by orthodontic forces using the three-dimensional finite element method. The three-dimensional finite element model of the lower first premolar was constructed on the basis of average anatomic morphology and consisted of 240 isoparametric elements. Principal stresses were determined at the root, alveolar bone, and periodontal ligament (PDL). In all loading cases for the buccolingually directed forces, three principal stresses in the PDL were very similar. At the surface of the root and the alveolar bone, large bending stresses acting almost parallel to the root were generally observed. During tipping movement, stresses nonuniformly varied with a large difference from the cervix to the apex of the root. On the other hand, in case of movement approaching translation, the stresses induced were either tensile or compressive at all occlusogingival levels with some difference of the stress from the cervix to the apex. The pattern and magnitude of stresses in the periodontium from a given magnitude of force were markedly different, depending on the center of rotation of the tooth.","PeriodicalId":40971,"journal":{"name":"Informationen aus Orthodontie und Kieferorthopaedie","volume":"21 2","pages":"185-94"},"PeriodicalIF":0.1,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13782907","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