Vieira Thaís Ribeiral, Douglas de Oliveira Dhelfeson Willya, Lages Frederico Santos, Soares Rodrigo Villamarim, Horta Martinho Campolina Rebello, Zenóbio Elton Gonçalves
Department of Periodontology, Dentistry Faculty, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, MG, Brazil.
J Int Acad Periodontol. 2016 Jul 18;18(3):86-93.
The aim of this study was to evaluate the influence of periodontal clinical parameters on the treatment of gingival recession by means of a coronally positioned flap (CPF).
In this clinical study, the coronally positioned flap technique was used in a sample of 14 individuals with Miller's Class I or II gingival recession of the canines and/or maxillary premolars, totaling 39 recessions. The clinical periodontal parameters evaluated were: probing depth (PD), gingival recession height (GRH), gingival recession width (GRW), clinical attachment level (CAL), keratinized mucosa (KM), attached keratinized mucosa (AKM), gingival thickness (GT) and free gingival margin thickness (GMT). The degree of root coverage was evaluated 3 months after the surgical procedures were performed. The data were analyzed using Student's-t, Mann-Whitney and Pearson's correlation tests, as well as the Cohen's d.
After root coverage, there was no significant change in PD. Significant reductions in GRH and GRW were observed. In addition, a significant reduction in KM and AKM, and an increase in GMT were also observed. A significant negative correlation was found between initial GMT and gingival recession at 3 months, and a significant negative correlation between GT and periodontal recession at 3 months. There was large effect size for GRH, GRW, CAL, KM, AKM and GMT parameters.
The initial gingival recession height, keratinized mucosa and free gingival margin thickness were the parameters that had the most influence on root coverage by the coronal sliding flap technique.
本研究旨在评估牙周临床参数对采用冠向复位瓣（CPF）治疗牙龈退缩的影响。
在这项临床研究中，对14例患有犬齿和/或上颌前磨牙米勒I类或II类牙龈退缩的患者样本采用冠向复位瓣技术，共有39处牙龈退缩。评估的临床牙周参数包括：探诊深度（PD）、牙龈退缩高度（GRH）、牙龈退缩宽度（GRW）、临床附着水平（CAL）、角化黏膜（KM）、附着角化黏膜（AKM）、牙龈厚度（GT）和游离龈缘厚度（GMT）。在手术操作后3个月评估牙根覆盖程度。使用学生t检验、曼-惠特尼检验、皮尔逊相关检验以及科恩d值分析数据。
牙根覆盖后，PD无显著变化。观察到GRH和GRW显著降低。此外，还观察到KM和AKM显著减少，GMT增加。发现初始GMT与3个月时牙龈退缩之间存在显著负相关，GT与3个月时牙周退缩之间存在显著负相关。GRH、GRW、CAL、KM、AKM和GMT参数的效应量较大。
初始牙龈退缩高度、角化黏膜和游离龈缘厚度是对冠向滑动瓣技术牙根覆盖影响最大的参数。
