Pini Prato G, Tinti C, Vincenzi G, Magnani C, Cortellini P, Clauser C
Department of Periodontology, Dental School, University of Siena, Italy.
J Periodontol. 1992 Nov;63(11):919-28. doi: 10.1902/jop.1992.63.11.919.
A surgical technique involving membranes was used to treat localized human buccal recessions 3 mm to 8 mm. The results on 25 patients (test group) were evaluated 18 months postoperatively and compared with the results obtained in 25 other patients (control group) having undergone mucogingival surgery. In the test group, a trapezoidal flap with a large base was raised beyond the mucogingival junction. The exposed root surface was scaled thoroughly to a concave shape. A membrane was bent and adapted onto the concave root surface. The flap was sutured far coronally and the membrane removed one month later. The control patients underwent a 2-step procedure, consisting of a free gingival graft and a coronally positioned flap. The amount of root coverage obtained was similar in the 2 groups (test = 72.73%; control = 70.87%), although the clinical attachment gain (test = 5.12 mm; control = 3.56 mm) and pocket variation (test = 1 mm reduction; control = 0.06 mm increase) differed significantly (P < 0.001). The keratinized tissue width was greater in the control group. The regression analysis showed that the amount of covered root surface after treatment was in strict correlation with the depth of the original recession in the test group, while no correlation was found in the control group. The expected root coverage was greater in the test group when the recession was greater than 4.98 mm, while it was greater in the control group when the recession was less than 4.98 mm. These results indicate that a guided tissue regeneration procedure can be used to successfully treat recession. The membrane procedure compared favorably with the mucogingival surgery in the treatment of deep recession.
一种涉及使用膜的外科技术被用于治疗3毫米至8毫米的局限性人类颊侧牙龈退缩。对25例患者（试验组）术后18个月的结果进行评估，并与另外25例接受了膜龈手术的患者（对照组）的结果进行比较。在试验组中，掀起一个大基底的梯形瓣至膜龈联合处之外。将暴露的根面彻底刮治成凹形。将一张膜弯曲并贴合于凹形根面上。将瓣向冠方远中缝合，1个月后取出膜。对照组患者接受两步手术，包括游离龈瓣移植和冠向复位瓣。两组获得的根覆盖量相似（试验组 = 72.73%；对照组 = 70.87%），尽管临床附着获得量（试验组 = 5.12毫米；对照组 = 3.56毫米）和牙周袋变化（试验组减少1毫米；对照组增加0.06毫米）差异有统计学意义（P < 0.001）。对照组的角化组织宽度更大。回归分析显示，试验组治疗后覆盖的根面量与原牙龈退缩深度密切相关，而对照组未发现相关性。当牙龈退缩大于4.98毫米时，试验组预期的根覆盖量更大，而当牙龈退缩小于4.98毫米时，对照组更大。这些结果表明，引导组织再生术可成功用于治疗牙龈退缩。在治疗深度牙龈退缩方面，膜技术与膜龈手术相比具有优势。
