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作者： Manju Bajracharya 重庆医科大学

学位级别：硕士

Objectives: To determine and analyze the incisal jaw morphology of maxillary bone of class II division 1 malocclusion among different vertical skeletal facial types.Materials and methods: 121 subjects of pretreatment lateral cephalometric radiographs with class II division 1 malocclusion including 54 males and 67 females of early permanent dentition aged from 12-14 years were studied. SN-MP angle was used to select 59 average angle, 30 high angle and 32 low angle vertical skeletal facial types Chinese patients. To observe the incisal jaw morphology of maxilla and mandible much index were traced from lateral cephalograms were analyzed and measured using factorial analysis. 53 parameters including linear, area ratio and angular measurements were processed using t-test and ANOVA. The characteristics of abnormal jaw morphology at incisor area of upper and lower incisors among three vertical facial skeletal types were discussed in detail.Results: At the upper and lower central incisors low angle individuals presented a greater dentoalveolar and basal bone thickness than high and average angle individuals. The distance from the root apex of upper and lower central incisors were far away from the lingual cortex in low angle than high angle individuals. The region between point PA, PC and TB, TC may be regarded as the limitations of palatal and lingual movement of maxillary and mandibular incisors. The compensation inclined changes on the palatal cortical plates relating to SN and PP plane and lingual cortical plates relating to GoGn plane brings compensation changes in the morphological structure of maxillary and mandibular jaws at incisor area in anterioposterior dimension. The areas of maxillary and mandibular basal bones showed consistent because of the inverted compensation changes in the height and thickness of the incisor jaw bones. The ability of compensation changes may be stronger in maxillary jaw at incisor area than mandibular jaw at the incisor area.

关键词： class II division 1 malocclusion maxillary bone incisor jaw morphology cephalometrics

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A Therapeutic Concept by “Watted” for the Surgical Lengthening of the Lower Face by Short Face Syndrome

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Open Journal of Stomatology 2015年第5期5卷 127-141页

作者： Nezar Watted Abu-Hussein Muhamad Josip Bill Peter Proff Department of Orthodontics Arab American University Jenin Palestine Department of Pediatric Dentistry University of Athens Athens Greece Clinic for Cranio-Maxillo-Facial Surgery Würzburg Germany Department of Orthodontics University of Regensburg Regensburg Germany

The continuously growing esthetic awareness for the facial appearance and the spreading of information about the possibilities of adult treatment by public media result in an increase of adult patients which seek orthodontic treatment to improve their facial esthetics. In general, these patients show such a severe skeletal deformity that it is detectable even by non-experts because of its extraoral manifestation, which is the main motivation for treatment. Because of the nature of these deformities and because of the lacking growth usable for therapy the only promising treatment for these patients is the combined orthodontic-surgical approach. Besides a stable and functional occlusion with physiologic position of the condyle, the goals of treatment are the improvement of the dental and, above all, facial esthetics since the patient judges the success of treatment mostly by the extraoral appearance. The dentofacial appearance must be defined prior to treatment to plan the individual right approach in knowledge of the different treatment possibilities for Angle Class II deformities and thus be able to reach for both sides—patient and orthodontist—satisfying result. With this article, a systematic therapy concept to treat patients with Class II deformities and skeletal deep bite with a short lower face (short face syndrome) under consideration of the soft tissue analysis is presented.

关键词： cephalometrics Facial Proportions Lower Face Height Skeletal Deep Bite Short Face Syndrome Lengthening of the Lower Face Bilateral Sagittal Split Osteotomy Mandibular Advancement Splint Therapy Lateral Open Bite

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Anatomical characteristics of catathrenia（nocturnal groaning） in upper airway and orofacial structures

Anatomical characteristics of catathrenia（nocturnal groanin...

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中国睡眠研究会第九届学术年会

作者： Zeliang Hao Xuemei Gao Fang Han Department of Orthodontics Peking University School and Hospital of Stomatology

＜正＞Background Catathrenia is a rare sleep disorder characterized by repeated groaning in a protracted expiration preceded by a deep *** study aimed to explore whether anatomy is one of pathophysiology of catathrenia by investigating the anatomical features associated with catathrenia in the upper airway,craniofacial structures,and dental *** and methods Twenty-two patients with catathrenia(7 males,15 females;age 22 to 69

关键词： Catathrenia Craniofacial Upper airway Occlusion OSAS cephalometrics

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