Abstract：【Objective】 To explore the application of crown lengthening in the treatment of dental repair in patients with teeth splitting to the deeper parts to subgingival. 【Methods】Selected January 2014 to 2016 January in the dental clinic of our hospital for diagnosis and treatment of 120 cases (120 teeth due to dental splitting to gingival deep patients were studied by randomly divided into study group and control group, 60 cases (60 teeth), the study group with crown lengthening surgery exposed section, the group take gingival resection exposed section, postoperative again conventional post crown repair, compared two groups of patients before surgery and after 6 weeks of plaque index (PLI), probing depth (PD), bleeding index (SBI) and aesthetic effect. 【Results】Before the operation, the study group and the control group PLI, PD, SBI in gingival difference were not statistically significant (P>0.05); after 6 weeks, the two groups of patients with PLI, PD, gingival SBI values were significantly decreased compared with preoperative, the difference was statistically significant (P<0.05), the study group of teeth PLI, PD, SBI gum was lower than the control group, the difference was statistically significant (P<0.05); 6 months after operation, the study group of patients with gingival color, with adjacent teeth and facial coordination restoration, color and shape are consistent with adjacent teeth satisfaction rates were 85%, 81.67%, 88.33% were higher than the control group 80%, 78.33%, 80%, but the difference was not statistically significant (P>0.05). 【Conclusion】Crown lengthening surgery used to treat tooth splitting reach deeper parts of subgingival restorative treatment of patients with better clinical results.
杨清, 袁荣. 牙冠延长术治疗牙体劈裂达龈下较深部位患者的疗效观察[J]. 医学临床研究, 2018, 35(5): 883-885.
YANG Qing, YUAN Rong. Application of crown lengthening to the patients with tooth splitting to deeper parts of subgingival. JOURNAL OF CLINICAL RESEARCH, 2018, 35(5): 883-885.
2018, Vol. 35 
