菌斑中的变形链球菌(简称变链)水平与龋病发生有关。修复材料不但可能影响菌斑细菌的粘附,而且还可影响菌斑中的变链水平。继发龋是汞合金和复合树脂修复失败的重要原因,而这在玻璃离子修复体的邻近区域很少发生。但是,尚未证实不同的修复材料是否在较长一段时间内影响菌斑的微生物构成。本研究的目的是 Streptococcus mutans plaque (referred to as variable chain) level and caries-related. Restorative materials not only may affect the adhesion of plaque bacteria, but also affect the level of chain change in the plaque. Secondary caries is a major cause of failed amalgam and composite resin repair, and this rarely occurs in the adjoining regions of the glass ionomer. However, it has not been established whether different repair materials affect the formation of microorganisms in the plaque for a longer period of time. The purpose of this study is