乳牙反可能发展为恒牙反 ,影响患者颌骨生长 ,导致颞颌关节疾病 ,妨碍美观和咀嚼功能 ,干扰心理正常发育。但其病因的详细资料尚少。本文就此病 10 7例的流行病学、病因的分类和发病机制进行了探讨 ,可望对此病的预防和治疗提供一定的参考。1　流行病学情况笔者在对 874名 Deciduous teeth may develop into anti-permanent teeth, affecting the patient's jaw growth, leading to temporomandibular joint disease, hinder the appearance and chewing function, interfere with mental normal development. However, the etiology of the details is still small. This article 107 cases of the disease epidemiology, etiology of the classification and pathogenesis were discussed, is expected to prevent and treat the disease provide some reference. 1 epidemiological situation I was right in 874