Cleft lip and/or palate is a one of oral-facial congenital anomalies, and this abnomalities were often showed to change for the untreatable gross skeletal discrepancies with growth. Therefore, it seemed that the longitudinal oral health service is neccessary to solve such the problem by integrated team composed of all specialities from birth to adulthood. On the other hand, it is important to advance with the final occlusion for a long term objectives at each developmental stage through the treatment of cleft patient. Numely, to prevent the dentol caries for healthy deciduous teeth, to lead the healthy and normal relationship of jaws, these objectives should be attainned at the deciduous and mixed dentition.

This articles showed above mentioned treatment procedure for the cleft patient, and then, oral examinations of 68 patients (37 males, 31 females) visitting Pedodontic Clinic of Iwate Medical University Dental Hospital.

Comparing with the normal children, denal caries incidence of deciduous teeth, caries prevalence rate, deft index, and deft rate appeared highest among younger stage. Particularly in upper anterior and upper poaterior regions. The dental carles is most frequency in complate cleft cip and palate patient.