Vieira Thaís Ribeiral, Douglas-de-Oliveira Dhelfeson Willya, Lages Frederico Santos, Cota Luís Octávio Miranda, Costa Frederico Oliviera, 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. 2017 Dec 24;20(1):25-31.
This study aimed to evaluate the effect of initial periodontal clinical parameters on the final outcome of the treatment of periodontal recessions by means of a coronally positioned flap (CPF).
The CPF technique was used in a total of 39 Miller Class I/II gingival recessions of the upper canines and/or premolars. The clinical periodontal parameters evaluated were: probing depth, gingival recession height, gingival recession width, keratinized mucosa, attached keratinized mucosa, flap thickness and free gingival margin thickness. The degree of root coverage was evaluated 6 months and 1 year after the surgery. The data were analyzed by Student's t-test, Mann-Whitney and Pearson's correlation tests, as well as linear regression.
A significant reduction in gingival recession height, gingival recession width, keratinized mucosa, and attached keratinized mucosa were observed. A significant negative correlation was found between gingival recession and root coverage percentage at 1 year, and a significant negative correlation between gingival margin thickness and coverage percentage at 1 year. The gingival recession and flap thickness significantly predicted the amount of root coverage.
The initial dimensions of gingival recession and the mucosa thickness were correlated to the percentage of root coverage. The gingival recession width was the major predictor of root coverage.
本研究旨在通过冠向复位瓣（CPF）评估初始牙周临床参数对牙周退缩治疗最终结果的影响。
对39例上颌尖牙和/或前磨牙的Miller I/II类牙龈退缩采用CPF技术。评估的临床牙周参数包括：探诊深度、牙龈退缩高度、牙龈退缩宽度、角化黏膜、附着角化黏膜、瓣厚度和游离龈缘厚度。术后6个月和1年评估牙根覆盖程度。数据采用学生t检验、曼-惠特尼检验、皮尔逊相关检验以及线性回归进行分析。
观察到牙龈退缩高度、牙龈退缩宽度、角化黏膜和附着角化黏膜显著降低。1年时牙龈退缩与牙根覆盖百分比之间存在显著负相关，1年时龈缘厚度与覆盖百分比之间存在显著负相关。牙龈退缩和瓣厚度显著预测牙根覆盖量。
牙龈退缩的初始尺寸和黏膜厚度与牙根覆盖百分比相关。牙龈退缩宽度是牙根覆盖的主要预测指标。
