The study of severe maxillofacial disorders

将小鼠胚胎前脑和中脑的神经嵴细胞分别进行培养，并进行免疫组织化学鉴定。中脑培养的神经元多于前脑培养的神经元。仅在中脑培养物中发现被认为是软骨细胞的细胞，而在前脑培养物中观察到黑素细胞。这些结果意味着，从两个区域的差异潜力似乎是部分限制迁移之前，从neuroepithelium.The严重颌面部疾病的手术有关的调查，在两个医疗机构，并在过去10年的数据进行了比较。恶性肿瘤中最大的一组是鳞状细胞癌，超过40%发生在泰国的下颌骨和日本的舌头上。在所有良性肿瘤中，成釉细胞瘤（51.4%）在泰国占最大比例，血管瘤（18.8%）在泰国占最大比例。 ...更多信息 日本单侧唇腭裂是最常见的畸形在这两个国家。在颌面部骨折的资料中，男性几乎是女性的3倍。骨折的主要原因在泰国为交通事故（72.5%），在日本为跌倒（30.0%）。关于TMJ功能障碍，泰国手术治疗强直（87.5%）和髁突增生（12.5%）。根据病理条件，日本采用了几种手术方法。对泰国和日本严重颌面部疾病患者进行了临床统计学研究。比较两所正畸治疗前后患者资料及口腔颌面部修复护理情况，发现两所正畸治疗在许多方面存在显著差异，主要是基于经济状况的差异。本研究中使用了21个头影测量参数。在两个样品中发现了一些相似之处，然而，也认识到一些差异。治疗后，泰国患者的下门牙向舌侧倾斜程度更高，前牙高度增加更多。对Papillon-Lefevre综合征（PLS）患者进行了检查和治疗。用ELISA法检测患者对伴放线放线杆菌（Actinobacillusactinomycetemcomitans（A.a.）处理后A.a.减少，细菌培养物中未检测到A.a.。PLS患者对A.a.a.的同一抗原均呈阳性反应，A.a.可能在PLS患者牙周组织破坏中起一定作用。少

Neural crest cells derived from forebrain and midbrain of mouse embryos were cultured separately and performed immunohistochemistry to identify the characteristics of the differentiated cells. Neurons derived from midbrain cultures were more than those from forebrain cultures. Cells which supposed to be chondrocytes were found only in midbrain cultures and melanocyte cells were observed in forebrain cultures. These results mean that the differential potentialities from the both regions seemed to be partly restricted before migrating out from the neuroepithelium.The severe maxillofacial disorders related to the surgery were investigated in two medical facilities and the data during the past 10 years was compared each other. The largest group in malignant tumors was represented by squamous cell carcinoma and more than 40% occurred on the mandible in Thailand and on the tongue in Japan. Of all benign tumors ameloblastoma (51.4%) made the largest group in Thailand and hemangioma (18.8%) in … More Japan. Unilateral cleft lip and palate was the most frequent malformation in both countries. In the data of the maxillofacial fractures men were almost 3 times as many as women. The fractures were caused mainly by traffic accident (72.5%) in Thailand and by fall down (30.0%) in Japan. Concerning TMJ dysfunction ankylosis (87.5%) and condylar hyperplasia (12.5%) were treated surgically in Thailand.Depending on the pathologic conditions several surgical procedures applied in Japan.A clinico-statistical study was performed on patients with severe maxillofacial disorders in Thailand and Japan. Data on the patients and maxillofacial prosthetic cares for them were compared between the two, conspicuous difference was found in many respects that mainly based on the economic status of the nation.A comparative cephalometric study was carried out by using pre- and post surgical orthodontic treatment in both institute. There were 21 cephalometric parameters used in this study. Some similarities in both samples were found, however, a few differences were also recognized. More lingually inclined lower incisor and more increased anterior dental height were found in Thai patient after treatment.Papillon-Lefevre syndrome (PLS) patients were examined and treated. The ELISA titers of the patients against Actinobacillus actinomycetemcomitans (A.a.) decreased after treatment and A.a.could not be detected in bacterial cultures. PLS patients showed positive antibody response to the same antigens of A.a.A.a.seemed to play role to periodontal tissue destruction in PLS patients. Less