4才時乳歯齲蝕の6才時永久歯齲蝕におよぼす影響について

抄録

The purpose of this study is to investigate the effects which the caries teeth (C-T) of deciduous teeth at the age of four give to the occurrence of C-T of permanent teeth (16,26,36,46,th teeth) at the age of six. Our subjects are 170 children of the kindergarten attached to Kochi University. We obtained some points of view about the occurrence of C-T and the prevention of C-T of permanent teeth at the age of six by counting the numbers of occurrence of C-T by means of the classification into dental series, inmaxillary and mandible and by investigating the results statistically.