Department of Periodontology, School of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain.
Private Practice, Barcelona, Spain.
J Clin Periodontol. 2017 Sep;44(9):933-940. doi: 10.1111/jcpe.12769. Epub 2017 Aug 11.
Evaluate if there is any relationship between the flap thickness (FT) and the presence of complete root coverage (CRC) when performing coronally advanced flaps in combination with a connective tissue graft (CTG).
Prospective clinical study, in which multiple Miller class I and II recessions were treated with a coronally advanced flap and a CTG standardized at 1 mm of thickness. Individual stents permitted repeated measurements of conventional periodontal parameters at the same point. The primary outcome variable was CRC. Secondary outcomes were recession reduction, gingival thickness and width of keratinized tissue (KT) achieved at 6 months post-surgery.
Forty-five recessions (2.4 ± 0.75 mm) were treated in 20 patients. Mean root coverage was 93.4 ± 10.98%; 65% achieved CRC. The mean FT was 1.01 mm ± 0.64 mm and 1.01 ± 0.61 mm at 2 and 5 mm from the gingival margin, respectively. No relationship could be found between FT and CRC (p > .05). Statistical significant changes (p < .05) were observed for recession depth, clinical attachment level, KT and soft tissue thickness at the end of the study.
Flap thickness seems not to be a predictor for CRC when performing a coronally advanced flap plus a CTG. This technique may be of choice when treating thin biotypes.
评估在进行冠向推进瓣联合结缔组织移植（CTG）时，瓣厚度（FT）与完全根覆盖（CRC）的存在之间是否存在关系。
这是一项前瞻性临床研究，其中对多个 Miller 分类 I 和 II 型牙周退缩采用冠向推进瓣和厚度标准化为 1 毫米的 CTG 进行治疗。个体化支架允许在同一部位重复测量常规牙周参数。主要结局变量为 CRC。次要结局为术后 6 个月时的牙周退缩减少、牙龈厚度和角化组织（KT）宽度。
20 名患者共治疗了 45 处牙周退缩（2.4 ± 0.75 毫米）。平均根覆盖为 93.4 ± 10.98%；65%达到 CRC。平均 FT 为 1.01 ± 0.64 毫米，分别距龈缘 2 和 5 毫米处为 1.01 ± 0.61 毫米。FT 与 CRC 之间未发现相关性（p >.05）。研究结束时，牙周退缩深度、临床附着水平、KT 和软组织厚度均观察到统计学显著变化（p <.05）。
在进行冠向推进瓣联合 CTG 时，瓣厚度似乎不是 CRC 的预测因素。对于薄生物型，这种技术可能是首选。
