Khanna Divya, George Joann Pauline, Babrawala Irfana S, Divakaran Remigus, Bhardwaj Smiti, Chakraborty Pornika
Krishnadevaraya College of Dental Sciences, Hunsmaranahalli, International Airport Road, Bangalore, India.
Private Clinical Practice, Tamil Nadu, India.
J Int Acad Periodontol. 2017 Oct 1;19(4):126-137.
: The purpose of this trial was to evaluate the outcome of a modification of pin hole surgical technique which consists of a minimally invasive coronally advanced tunnel technique (MI-CAT) with orthodontic buttons and suturing in the treatment of multiple recession type defects.
Twelve systemically healthy patients (79 sites) aged between 22 - 55 years with Miller's Class I and II multiple recession defects were treated with minimally invasive coronally advanced tunnel technique. Thirty-nine sites were randomly assigned to a control group and the other 40 sites to the test group. In the test group, in addition to the MICAT procedure, buttons and suspensory silk sutures were used for the stabilization of the advanced flap. Clinical parameters were assessed at baseline, 3 weeks, 6 weeks and 6 months after surgery.
A total of 79 recessions were treated. Complete root coverage from baseline to 6 months was 56% in the control group and 73% in the test group. Mean root coverage was 82.4% in the control group and 85.7% in the test group. Root coverage aesthetic scores of 9.3/10 and 9.4/10 were noted in the control and test group respectively.
Six months post-surgical evaluation showed that minimally invasive coronally advanced tunnel technique with orthodontic buttons and suturing was effective and predictable for the treatment of multiple recession type defects. The clinical outcomes were similar to that of the control group with no statistical difference between the two groups.
本试验的目的是评估一种改良的针孔手术技术的效果，该技术包括采用正畸纽扣和缝合的微创冠向推进隧道技术（MI-CAT）来治疗多个退缩型缺损。
12例年龄在22至55岁之间、患有米勒I类和II类多个退缩型缺损的全身健康患者（共79个部位）接受了微创冠向推进隧道技术治疗。39个部位被随机分配到对照组，另外40个部位被分配到试验组。在试验组中，除了MI-CAT手术外，还使用纽扣和悬吊丝线缝合来稳定推进的皮瓣。在基线、术后3周、6周和6个月时评估临床参数。
总共治疗了79个退缩部位。从基线到6个月时，对照组的完全牙根覆盖率为56%，试验组为73%。对照组的平均牙根覆盖率为82.4%，试验组为85.7%。对照组和试验组的牙根覆盖美学评分分别为9.3/10和9.4/10。
术后6个月的评估表明，采用正畸纽扣和缝合的微创冠向推进隧道技术在治疗多个退缩型缺损方面是有效且可预测的。临床结果与对照组相似，两组之间无统计学差异。
