Abstract
We have experienced a 13 year 2 month-old boy, diagnosed as Letterer-Siwe disease and a 11 year 6 month-old girl, diagnosed as Hand-Schiiller Christian disease, who has been followed for about 7 years.
Oral and facial findings of the two cases were as follows.
1) In the case diagnosed as Letterer-Siwe disease, the maxillary bone were showed absorption severly, meanwhile the mandibular bone were less absorption as con trasted with maxilla.
2) Loosening and exfoliation of teeth and gingivitis were found intensively in both cases.
3) In the case diagnosed as Hand-Schuller-Christian disease, absorption of the alveolar bone and itselves in mandibula and maxilla had been progressing for about 7 years. Meanwhile the bone absorption of skull and costae weren't found at 11 year 6 month -old.
4) In the two cases observed, comparing the oral manifestations with the other physical manifestations, it was recognized that the oral manifestations occurred prev ious to the pysical manifestations.
