Held M, Heise S, Sobkowiak E M
Zahn Mund Kieferheilkd Zentralbl. 1975;63(5):442-7.
Studies on the shape of interproximal contact in the lower side teeth region were performed in 203 persons and 73 models. In 74,9% of cases a spheric-plane and in 25,1% a more punctuous-plane contact was registered. These findings are compared with observations of the interproximal abrasion of the lower premolars and molars in roe.
