半个多世纪以来,银汞合金充填窝洞的设计一直沿用着G.V.Black根据生物机械学研究提出的一系列原则,而且在长期的实践中,这些原则有了某些发展和改进。虽然这种改进在70年代初提出来,但国内尚未重视,有价值作一介绍。 For more than half a century, the design of silver-amalgam filling cavities has followed a series of principles put forward by G.V. Black based on biomechanical studies, and some developments and improvements have been made in these long-term practices. Although this improvement was put forward in the early 1970s, it has not yet been valued and valuablely introduced in China.