Qvist V
Scand J Dent Res. 1980 Aug;88(4):296-300. doi: 10.1111/j.1600-0722.1980.tb01229.x.
The purpose of the present study was to correlate the marginal adaptation of composite fillings to the bacterial growth in the cavities. Forty-three cavities prepared in vivo on human third molars were acid etched and filled with the composite resin Concise. After 4 months the teeth were extracted and examined for marginal leakage along the restorations. After histologic preparation an average of 38 sections from each cavity were stained and investigated for bacteria on the cavity walls and in the exposed dentinal tubules. General marginal leakage was found in 14 of the restorations and bacterial growth in 12. For 35 of the 43 restorations there was a agreement between marginal leakage and bacterial growth (P = 0.0002). Based on the results it is concluded that bacteria in a cavity can be used as an indicator of marginal leakage along the restoration.
本研究的目的是将复合树脂充填体的边缘适应性与窝洞内的细菌生长情况相关联。在人体第三磨牙上制备了43个窝洞，进行酸蚀后用Concise复合树脂充填。4个月后拔除牙齿，检查修复体边缘的微渗漏情况。经过组织学处理后，每个窝洞平均制作38个切片，进行染色，并检查洞壁和暴露的牙本质小管内的细菌。14个修复体存在总体边缘微渗漏，12个有细菌生长。43个修复体中有35个的边缘微渗漏与细菌生长情况相符（P = 0.0002）。基于这些结果得出结论，窝洞内的细菌可用作修复体边缘微渗漏的指标。
