Effects of Crown Lengthening on Bi, PLI and PD Levels in Patients with Different Periodontal Biotypes  

作　　者：Lu Bai 

机构地区：[1]Department of Stomatology,Chifeng University Affiliated Hospital,Chifeng 024000,Inner Mongolia,China

出　　处：《Journal of Clinical and Nursing Research》2020年第5期17-20,共4页临床护理研究（英文）

摘　　要：Objective:To investigate the effect of crown lengthening on patients with different periodontal biological types.Methods:60 patients with different periodontal biotypes treated in our hospital from May 2017 to February 2019 were retrospectively analyzed.According to the different periodontal biotypes,the above-mentioned patients were further divided into control group(thin fan type,30 cases)and observation group(thick flat type,30 cases).The periodontal probing depth(PD),plaque index(PLI),bleeding index(BI)and gingival margin position at 1 week,1 month,2 months and 3 months after operation were compared between the two groups.Results:The PD,Bi and PLI values of the two groups after treatment were lower than those before treatment(P<0.05);There was no significant difference in gingival margin position between the two groups after 1 week to 1 month and 1 month to 2 months(P>0.05);After 2 months to 3 months of treatment,the gingival margin distance of the observation group was larger than that of the control group,and the difference was statistically significant(P<0.05).Conclusion:Crown lengthening can effectively improve the periodontal indexes of different periodontal biotypes,and the gingival margin of thick and flat type patients moves more toward the crown.

关 键 词：Periodontal biotype Crown lengthening Periodontal index 

分 类 号：R78[医药卫生—口腔医学]