含氟牙线牙周临床效果初探

The periodontal clinical effects of the fluoride-coated dental floss

对５８名志愿者随机分为Ａ、Ｂ两组，每人全口牙分为用牙线侧（Ａ１或Ｂ１）不用牙线侧Ａ２或Ｂ２）．Ａ１用含氟牙线，Ｂ１用不含氟牙线。结果显示：用牙线１周后，各组受试者菌斑指数（ＰＬｌ）、牙龈出血指数（Ｂｌ）均数都明显降低（Ｐ＜０．０１）。各组间差异无显著性（Ｐ＞０．０５）。但龈下菌斑中螺旋体的比例（Ｓ％）仅用合氟牙线的Ａ１降低显著（Ｐ＜０００１）。停用牙线１周后，各组ＰＬｌ、Ｂｌ均数都有回升，Ａ１的Ｓ％也回升到基线水平，但其Ｂｌ仍维持较低水平。使用含氟牙线不但能有效地控制牙齿邻面菌斑，减轻牙龈炎症，而且能明显抑制牙周致病菌。

volunteers were randomly divided into two groups:group A and group B.Each volunteer's mouth was randomly divided into two sides:floss side(Al or B1) and non-flossing side(A2 or B2).And Al used the dental floss with fluoride and B1 used the dental floss without fluoride.Plaque index(PLI),bleeding index(BI),probing depth(PD)and subgingival plaque were examined before flossing,one week of flossing and one week after stop flossing.The data showed that the PLI and BI of all the groups were declined significantly after one week of using test and placebo floss(p<0.001).However,the percentage of subgingival spirochetes(S%) was reduced only in the flossing side of group A(P<0.001).One week after flossing had stopped,the S% went up to baseline level,but the means of BI in the flossing side of group remained at lower level in comparison with that of one week after flossing.These findings indicated that continuously using fluoride-coated dental floss could reduce the quantity of plaque,S% and effectively control gingival inflammation.