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Gingival recession is characterized by apical positioning of the gingival side in relation to the cementoenamel junction. Thus, this study aimed at evaluating the effectiveness of two surgical techniques for root coverage in patients with gingival recession of Miller class I or II. Materials and methods: A total of 13 patients were selected, from the age group of 20 to 50 years, with bilateral gingival recession Miller class I or II, totaling 34 recessions. When the basic periodontal treatment was accomplished, every recession was included in one of both selected groups according to the surgical technique: Control group—Subepithelial connective tissue graft associated with coronally positioned fl ap technique and test group—Subepithelial connective tissue graft associated with the modifi ed envelope technique. Patients were evaluated for 180 days, and the periodontal parameters were analyzed in 0, 90, and 180 days. Results: The results showed that both surgeries were effective since they kept probe depths with periodontal health and clinical attachment gain (p < 0.05) in both groups, up from 90 days. The reduction was kept for 180 days, mainly for the control group that showed a clinical attachment gain that was still statistically signifi cant at 180 days (p < 0.05). Regarding the root coverage, the control group showed a 90.2% of coverage while the test group showed 89.5%. ORIGINAL RESEARCH 1 Department of Periodontology, Unipar Energy Systems Private Limited, Cascavel, Parana, Federal Republic of Brazil Department of Dentistry, West Paraná State University, Cascavel Parana, Federal Republic of Brazil 2,7 Department of Periodontology, Júlio de Mesquita Filho State University, Cascavel, Parana, Federal Republic of Brazil Department of Periodontology, West Paraná State University Cascavel, Parana, Federal Republic of Brazil; Department of Biosciences and Health and Dentistry, West Paraná State University, Cascavel, Parana, Federal Republic of Brazil 3-5 Department of Periodontology, School of Dentistry, West Paraná State University, Cascavel Parana, Federal Republic of Brazil 6 Dentistry Auxiliar, Nurse Technique, Cascavel, Parana, Federal Republic of Brazil Corresponding Author: Carlos A Nassar, Department of Periodontology, Júlio de Mesquita Filho State University, Cascavel Parana, Federal Republic of Brazil; Department of Periodontology West Paraná State University, Cascavel, Parana, Federal Republic of Brazil; Department of Biosciences and Health and Dentistry West Paraná State University, Cascavel, Parana, Federal Republic of Brazil, Phone: +554591013369, e-mail: canassar@yahoo.com 10.5005/jp-journals-10015-1446 Conclusion: Thus, it can be concluded that both techniques, after 180 days, were effective for the health of periodontal tissues; however, a greater emphasis can be observed on the subepithelial connective tissue graft-associated coronally positioned fl ap technique because this technique demonstrated a greater signifi cant gain in the clinical attachment level. Clinical signifi cance: The subepithelial connective tissue graft is used for gaining the clinical attachment level in the root coverage of patients with gingival recession Miller classes I and II.

Root Coverage in Miller Classes I and II associated with Subepithelial Connective Tissue Graft: A comparative Clinical Trial of Two Techniques