Clinical Observation of Porcelain Fused to Metal Crown and Bridge Marginal Fitness of its Crown - Hamada, Taizo; Miyoshi, Ryoichi; Hayashi, Yumi; Maetani, Teruo; Nahara, Yukinori; Nakao, Katsuhiko (Nihon Hotetsu Shika Gakkai Zasshi, 1981)