Zhang F, Zhu M, She W
School of Stomatology, Shanghai Second Medical University, Shanghai 200011.
Zhonghua Kou Qiang Yi Xue Za Zhi. 1999 Jan;34(1):37-9.
The effect of clasp on the health of abutment teeth.
To analyse and compare the cariogenic bacteria plaque getting from the buccal cervical third of casting and wrought wire clasp teeth before and one week after wearing removable partial dentures.
The average percentages of Streptococcus Mutans and Actinomyces Viscosus in total culturable bacteria rised significently in statistical analysis, but there was no significent difference of Lactobacilli. The average percentage of Actinomyces Viscosus increased less after wearing casting clasp RPD than that of wrought wire clasp.
Clasps of RPD increased the risk of root caries of abutment teeth. However the influence of casting clasps was smaller than that of wrought wire clasps.
研究卡环对基牙健康的影响。
分析并比较可摘局部义齿佩戴前及佩戴一周后，铸造卡环和锻丝卡环基牙颊侧颈部三分之一处获得的致龋菌菌斑。
在统计学分析中，变形链球菌和粘性放线菌在总可培养细菌中的平均百分比显著升高，但乳酸杆菌无显著差异。佩戴铸造卡环可摘局部义齿后，粘性放线菌的平均百分比增幅小于锻丝卡环。
可摘局部义齿的卡环增加了基牙根龋的风险。然而，铸造卡环的影响小于锻丝卡环。
