Rosetti E P, Marcantonio R A, Rossa C, Chaves E S, Goissis G, Marcantonio E
Department of Periodontology, Araraquara Dental School, State University of São Paulo, Brazil.
J Periodontol. 2000 Sep;71(9):1441-7. doi: 10.1902/jop.2000.71.9.1441.
Various procedures have been proposed to treat gingival recession, but few studies compare these procedures to each other. The purpose of this study was to evaluate a clinical comparison of subepithelial connective tissue graft (SCTG) and guided tissue regeneration (GTR) with a collagen membrane in the treatment of gingival recessions in humans.
Twenty-four defects were treated in 12 patients who presented canine or pre-molar Miller Class I and/or II bilateral gingival recessions. Both treatments were performed in all patients, and clinical measurements were obtained at baseline and 18 months after surgery. These clinical measurements included gingival recession height (GR), root coverage (RC), probing depth (PD), keratinized tissue width (KT), and final esthetic result.
Both SCTG and GTR with a bioabsorbable membrane and bone graft demonstrated significant clinical and esthetic improvement for gingival recession coverage. The SCTG group was statistically significantly better than GTR for height of GR (SCTG = 0.2 mm, GTR = 1.12 mm, P= 0.02) and KT (SCTG = 4.58 mm, GTR = 2.5 mm, P<0.0001). However, PD was statistically significantly better for GTR than SCTG treatment (GTR = 1.66 mm, SCTG = 1.00, P= 0.01). The 2 procedures were statistically similar in root coverage (SCTG = 95.6%, GTR = 84.2%, P= 0.073). The esthetic condition after both treatments was satisfactory (P= 0.024).
It was concluded that the gingival recessions treated with the SCTG group were superior for GR, RC, and KT clinical parameters, while GTR demonstrated better PD reduction. The final esthetic results were similar using both techniques.
已提出多种治疗牙龈退缩的方法，但很少有研究对这些方法进行相互比较。本研究的目的是评估上皮下结缔组织移植（SCTG）和使用胶原膜的引导组织再生（GTR）治疗人类牙龈退缩的临床效果比较。
对12例患有犬牙或前磨牙米勒I类和/或II类双侧牙龈退缩的患者的24处缺损进行治疗。所有患者均接受了两种治疗，并在基线和术后18个月进行了临床测量。这些临床测量包括牙龈退缩高度（GR）、牙根覆盖（RC）、探诊深度（PD）、角化组织宽度（KT）和最终美学效果。
SCTG以及使用生物可吸收膜和骨移植的GTR在牙龈退缩覆盖方面均显示出显著的临床和美学改善。SCTG组在GR高度（SCTG = 0.2 mm，GTR = 1.12 mm，P = 0.02）和KT（SCTG = 4.58 mm，GTR = 2.5 mm，P < 0.0001）方面在统计学上显著优于GTR。然而，GTR治疗的PD在统计学上显著优于SCTG治疗（GTR = 1.66 mm，SCTG = 1.00，P = 0.01）。两种方法在牙根覆盖方面在统计学上相似（SCTG = 95.6%，GTR = 84.2%，P = 0.073）。两种治疗后的美学状况均令人满意（P = 0.024）。
得出的结论是，SCTG组治疗的牙龈退缩在GR、RC和KT临床参数方面更优，而GTR在减少PD方面表现更好。两种技术的最终美学效果相似。
