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龋齿:俗称“虫牙”、“蛀牙”,老年人患龋率随年龄增加而增加,可达80%以上。由于牙龈萎缩,牙槽骨吸收,牙根暴露,龋病多发生在牙根上,称为“根面龋”。该病的发生是由于口腔里的某些细菌,存留于牙体表面食物残渣里,孳生繁殖产酸,使牙体硬组织脱钙腐蚀而形成缺损。其预防应加强营养,保持口腔卫生,养成早晚刷牙、饭后漱口的良好习惯,多摄取含氟量高
Caries: commonly known as “worm teeth”, “tooth decay”, elderly caries prevalence rate increases with age, up to 80%. As the gingival recession, alveolar bone resorption, root exposure, dental caries occur in the root, known as the “root caries.” The disease occurs because some bacteria in the mouth, remain in the food residue in the tooth surface, breeding and acid production, so that the decalcification of hard tissue of teeth and the formation of defects. The prevention should strengthen nutrition, maintain oral health, develop morning and evening brushing, good habits after gargle, more intake of high fluoride