A study on the relationship between tooth to denture base discrepancy and periodontal disease.

牙齿与义齿基托差异与牙周病关系的研究。

基本信息

批准号：
04671174
负责人：
INAGAKI Koji
金额：
$ 1.28万
依托单位：
Department of Periodontology, School of Dentistry, Aichi-Gakuin University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04671174/
关键词：
discrepancy malocclusion crowding pathological tooth migration juvenile periodontitis 〓生

项目摘要

Accompanying Japan's economic growth, Japanese society has been changed. With the development of medical care and nutrition, life expectancy in Japan has become very high. These changes are dramatically affecting our health, and may influence the oral breakdown process related to periodontal disease. In such circumstances, the frequency of periodontal disease and malocclusion (spacing and crowding) associated with the tooth to denture base discrepancy is gradually increasing. In the present study, the relationship between tooth to denture base discrepancy and periodontal disease were studied, in order to suggest answers to some of above phenomena. The periodontal condition of 2677 patients, 13 to 82 years of age for the recent 4 years were assessed. Furthermore, the periodontal status of 78 young adults aged 13 to 30 years with periodontitis were analyzed. The portion of males to females for all subjects was 1 : 1.7. The number of patients increased in age until the peak was reached in the 51-55 years age group. The subjects whose ages were under 30 years totaled the 253 (9.5%), and the ratio of male to female was 1 : 2.2. Of the 253 subjects, 78 (30.8%) had a noncontributory medical history. The teeth which were lost the most were first molars followed by second premolars, and the teeth most often remaining were canines. Thirty six patients (46.2%) showed a general alveolar bone loss, which affected all pars of the dentition and only 3 subjects (3.8%) demonstrated localized alveolar bone loss, which damaged both incisors and first molars. The teeth with radiographical alveolar bone loss of both mesial and distal surfaces were more frequent than those of either mesial or distal surfaces. Bleeding on probing and the ratio of teeth in which the probing depth was more than 4 or 7 mm tended to decrease with age. These findings indicate that periodontitis may already have begun even in their twenties and emphasize to need for early discovery and treatment of this proble

随着日本经济的增长，日本社会也发生了变化。随着医疗和营养的发展，日本的预期寿命变得非常高。这些变化极大地影响我们的健康，并可能影响与牙周病相关的口腔分解过程。在这种情况下，与牙齿与义齿基托差异相关的牙周病和咬合不正（间隙和拥挤）的频率逐渐增加。在本研究中，研究了牙齿与义齿基托的差异与牙周病之间的关系，以便为上述一些现象提供答案。对近4年2677名13至82岁患者的牙周状况进行了评估。此外，还分析了 78 名 13 至 30 岁患有牙周炎的年轻人的牙周状况。所有受试者的男女比例为1:1.7。患者数量随着年龄的增长而增加，直到51-55岁年龄组达到顶峰。年龄在30岁以下的受试者共253人（9.5%），男女比例为1：2.2。在 253 名受试者中，78 名（30.8%）有非贡献性病史。丢失最多的牙齿是第一磨牙，其次是第二前磨牙，最常残留的牙齿是犬齿。 36 名患者 (46.2%) 表现出全身牙槽骨流失，影响牙列的所有部分，只有 3 名受试者 (3.8%) 表现出局部牙槽骨流失，损害门牙和第一磨牙。影像学显示近中和远中表面牙槽骨缺失的牙齿比近中或远中表面的牙齿更常见。随着年龄的增长，探诊出血和探诊深度超过 4 或 7 毫米的牙齿比例趋于减少。这些发现表明，牙周炎可能在二十多岁时就已经开始，并强调需要及早发现和治疗这一问题