传统汞合金充填窝洞的洞面角(CaVo-Surface angle)(csa)通常大于90度。一般认为csa 制成钝角汞合金边缘角为锐角这是不合理的。虽经仔细雕刻汞合金可改善其边缘角,但仍有必要设计一种洞型以缩小csa。最近一些临床研究表明,当csa 为90度时对汞合金能产生良好影响,但至今尚没有关于这种改良洞型对整个修复牙齿总作用力分布方的面研究。本研究采用最近提出的一种洞型 Conventional amalgam filled caves have a caVo of more than 90 degrees. It is generally considered csa obtuse amalgam edge angle is acute angle this is unreasonable. Although carefully carved amalgam can improve its edge angle, but there is still a need to design a hole to reduce csa. Some recent clinical studies have shown that when the csa is 90 degrees on the amalgam can have a good impact, but so far there is no such hole on the improvement of the total repair force distribution of the surface of the square study. This study uses a recently proposed hole pattern