Abstract
Some synthesis and analysis of jaw prosthetic restorations were carried out by the Joint Research Group from April 1955 to March 1957.
1. Clinical cases: 50
2. Maxilla 80% and Mandibula 20%
3. Causes of Lesions: 64%by tumor, the others by injury and inflammation.
By Yoshida's classification form (Deficient appearance of jaw, IRYO 14, 304. 1960) 33 cases who, at the above said installation had both operations and jaw prosthetic restorations, were studied.
These were classified as follow:
Class Case
