Patent ID: 9642681
Date: 2017-05-09
CPC Classifications: A61C

Claim:
1. A dental plaster, comprising: a gypsum body including a horseshoe shaped upper body, the horseshoe shaped upper body including a flat portion and a circular shaped portion; a lower support unit, the lower support unit having a hole which is formed to pass through the lower support unit from a top surface to a bottom surface and formed at a center to accommodate the gypsum body, and a fixing shoulder protruded from the top surface of the lower support unit toward the gypsum body to face the flat portion of the gypsum body, the fixing shoulder having a passing-through hole; a fixing plate disposed between the gypsum body and the fixing shoulder, the fixing plate having a hole in a region corresponding to the passing-through hole; and a fixing unit connecting the fixing shoulder and the flat portion with the intervening fixing plate between the fixing shoulder and the gypsum body, wherein the fixing plate directly contacts the fixing shoulder and the flat portion of the gypsum body, and wherein the fixing plate contacts the gypsum body only on the flat portion.