Boston D W, Graver H T
Temple University School of Dentistry, Department of Operative Dentistry, Philadelphia, PA 19140.
Oper Dent. 1994 Mar-Apr;19(2):65-9.
This study determined histologically the incidence of acid red dye-stainable dentin and its correlation to bacterial presence beneath intact clinically sound amalgam restorations. Fourteen of 16 clinically sound amalgam restorations (88%), serving an average of 11 years, had microscopically evident microorganisms in the subjacent dentin. Eleven of the 14 specimens containing bacteria (79%) exhibited acid red dye-stainable dentin. There was no obvious correlation between dye-stainable dentin and the presence of bacteria on the walls of the cavity preparations studied. The question of how much dye-stainable dentin can be present beneath an amalgam restoration before the restoration fails is still unanswered.
本研究通过组织学方法确定了酸性红色染料可染色牙本质的发生率及其与完整临床健康汞合金修复体下方细菌存在情况的相关性。16个临床健康的汞合金修复体中，有14个（88%）平均使用了11年，在其下方牙本质中显微镜下可见明显的微生物。14个含有细菌的标本中有11个（79%）呈现酸性红色染料可染色牙本质。在所研究的窝洞预备壁上，可染色牙本质与细菌的存在之间没有明显的相关性。在汞合金修复体失败之前，其下方可存在多少可染色牙本质的问题仍未得到解答。
