弱智儿童不仅在心理、行为及社会适应方面在缺陷，在口腔颌面发育方面也同正常儿童有异，同时口腔卫生方面也存在许多问题。为提高人口素质，加强口腔卫生保健工作，我们对２６２例弱智儿童的口腔颌面部情况及患儿其它情况作了调查，报告如下。１资料和方法 自１９９６年１０月 Mentally handicapped children are not only deficient in their psychology, behavior and social adjustment, but also different from normal children in oral and maxillofacial development. At the same time, there are many problems in oral hygiene. In order to improve the population quality and strengthen oral health care work, we investigated the oral and maxillofacial conditions of 262 mentally retarded children and other cases of children and reported the following. 1 Materials and Methods Since October 1996