Zielke D R, Heggers J P, Harrison J W
Oral Surg Oral Med Oral Pathol. 1979 Jan;47(1):83-6. doi: 10.1016/0030-4220(79)90107-5.
A total of 244 paired samples were obtained from sixty-one root canal systems at four specific stages of endodontic treatment. Half the samples were placed in a commonly used endodontic medium and incubated aerobically. The remaining samples were placed in PRS medium and incubated in an anaerobic environment. The rereduction procedure, used to remove oxygen entering the PRS medium at the time of insertion of the sample, was not employed. A statistical analysis of the results indicates that the non-rereduced PRS medium is not as sensitive as rereduced PRS and offers no significant advantages over trypticase soy broth with 0.1 percent agar.
在根管治疗的四个特定阶段，从61个根管系统中总共获取了244对样本。一半样本置于常用的根管治疗培养基中，进行需氧培养。其余样本置于PRS培养基中，在厌氧环境下培养。未采用用于去除样本插入时进入PRS培养基的氧气的再还原程序。结果的统计分析表明，未再还原的PRS培养基不如再还原的PRS培养基敏感，与含0.1%琼脂的胰蛋白胨大豆肉汤相比没有显著优势。
