临床口腔医学杂志2016，Vol.32Issue(8)：472-475,4.DOI:10.3969/j.issn.1003-1634.2016.08.008
微创牙冠延长术的临床疗效评价
The clinical effect of minimally invasive crown lengthening
摘要
Abstract
Objective:The goal of this investigation was to evaluate the clinical effect of minimally inva-sive technique in crown lengthening.Method:Thirty-nine patients with 45 teeth defects 1.5-4 mm below gingiva were randomly divided into two groups.The crowns were lengthened with traditional method in control groud(22 patients with 24 teeth),and experimental group(17 patients with 21 teeth) used minimally invasive technique:surgery was performed with the aid of an operating microscope and microsurgical instrument, the crown were lengthened with piezosurgery,5-0 stitches in suture.Probing depth( PD) ,sulcus bleeding index( SBI) and mobili-ty degree( MD) were measured before surgery and one week,8 weeks after surgery,and 6 months after prosthodon-tic.Gingival recession( GR) was measured at 6 months after prosthodontic treatment,and recorded the postopera-tive adverse reactions.Results:SBI,PD at one week after surgery in two groups were obviously improved which compared with presurgical(P<0.01),Experimental group improve significantly to the control group(P<0.05), but MD were increased(P<0.01),while at 8 weeks postsurgery and 6 months after prosthodontic were not statis-tically different with two groups( P>0.05) .At 1 week after surgery experimental group the SBI and PD is better than that of control group,the differences between two groups was statistically significant(P<0.01).At 8 weeks postsurgery and 6 months after prosthodontic treatment PD in experimental group is lower than control group(P<0.01),the improvement of SBI is superior to the control group(P<0.05).GR was observed in 6 teeth of control group 6 month after prosthodontic,and there are 4 cases with postoperative swelling and 3 cases with postoperative pain in control group,but not observed in experimental group(P<0.05)Conclusion:Minimally invasive technol-ogy in crowns lengthening can obviously improve the clinical indicators, reduce postoperative adverse reactions and gingival recession.关键词
微创技术/牙冠延长术/超声骨刀Key words
Minimally Invasive Technique/Crown Lengthening/Piezosurgery分类
医药卫生引用本文复制引用
汪涌,陈莹,姚莉莉..微创牙冠延长术的临床疗效评价[J].临床口腔医学杂志,2016,32(8):472-475,4.基金项目
2014年合肥市自主创新政策“借转补”项目安徽省2015年公益性技术应用研究联动计划项目（1501ld04067）合肥市第四周期医学重点学科建设计划资助卫科 （）
