A study on the characteristic of dental caries, periodontal disease and oral environment in disabled children, and on their preventive care for the dental disease.

对严重运动智力障碍(SMID)患者牙周病的研究结果如下。SMID患者的牙龈CPI检查结果显示，青少年牙周炎的牙周炎程度比一般人群更差。“抗癫痫药种类”和“口腔清洁状况”是区分牙龈过度生长和非牙龈过度生长的最有用的因素。在服用苯妥英钠(PHT)的患者中，牙龈过度生长的发生率最高。牙龈过度生长患者的特点是“服用丙戊酸(VPA)”或“服用VPA但不服用PHT”，且口腔清洁状况较差。当她们是“女性”和“十几岁”时，风险会变得更高。在牙周病相关细菌学检查中，牙周过度生长病例，P.G.，B.F.在3~4岁儿童患龋率中，残疾儿童的患龋率明显高于正常儿童。经过3年的定期检查和口腔卫生指导，学龄前儿童患龋率一直低于学龄前正常儿童。接触显微摄影分析，正常儿童乳牙釉质脱钙深度大于唐氏综合征儿童。

The results in the study of a periodontal disease in Severe Motor Intellectual disabilities (SMID) were as follows. The gingival findings by CPI of SMID turned worse from youth than general population. The most useful factor for distinguishing between suffering from gingival overgrowth and non-gingival overgrowth were "kind of antiepileptic drug" and "oral cleaning condition". The incidence of gingival overgrowth was the highest among those taking phenytoin (PHT). The characteristic of persons suffering from gingiver overgrowth were "taking PHT and not taking valproic acid (VPA)" or 2 taking VPA and not taking PHT"; furthermore those were poor oral cleaning condition. The risk become higher when they were "female" and "in their tens". In periodontal disease - related bacteriological examination for gingival overgrowth cases, P.g., B.f. in severe cases were detected in a significantly high ratio than that of light cases.In the caries incidence rate of 3-4 years old children, the rate of the children with disabilities with disabilities was significantly higher than that of normal children. The caries incidence rate of the pre-school children were maintained low rate than that of the pre-school normal children by carrying out periodical examination and oral hygiene instruction by dental staff for 3 years.In analyzing by contact micro-radiography, decalcification depth of primary tooth enamel of normal children was deeper than that of Down syndrome children using the tooth-enamel dissolution liquid.