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At baseline, 3, 120\u00a0\u00b1\u00a012, and 240\u00a0\u00b1\u00a012\u00a0months after surgery, data on probing depth, clinical attachment level, recession depth and width, amount of keratinized tissue, and bleeding on probing were obtained. Additionally, patients\u2019 smoking habits and participation in supportive periodontal therapy were investigated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eight patients contributing 23 recessions were available at the 240\u00a0\u00b1\u00a012\u00a0months follow\u2010up. Three and 120\u00a0\u00b1\u00a012\u00a0months after therapy with CTG, significantly better root coverage was observed compared with baseline (3\u00a0months: 3.01\u00a0\u00b1\u00a01.74\u00a0mm; <jats:italic>P<\/jats:italic>\u00a0=\u00a00.003; 120\u00a0\u00b1\u00a012\u00a0months: 2.11\u00a0\u00b1\u00a01.86\u00a0mm; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.024). GTR resulted in significantly better root coverage compared with baseline after 3\u00a0months (2.25\u00a0\u00b1\u00a01.89\u00a0mm; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.012). Although there were no significant changes in the recession depth between 3 and 240\u00a0\u00b1\u00a012\u00a0months in both groups (CTG: <jats:italic>P<\/jats:italic>\u00a0=\u00a00.097; GTR: <jats:italic>P<\/jats:italic>\u00a0=\u00a00.190), 1.57\u00a0\u00b1\u00a02.12\u00a0mm (CTG) and 1.19\u00a0\u00b1\u00a02.31\u00a0mm (GTR) of the achieved coverage after 3\u00a0months were lost. CTG showed significantly better relative root coverage percentage than GTR after 3 (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.026) and 120 (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.038) months. This study failed to detect a significant difference in the stability of root coverage after 240\u00a0\u00b1\u00a012\u00a0months between CTG and GTR (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.448) and patients\u2019 assessments of their treatment outcomes (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.503).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Long\u2010term stability of root coverage and patient\u2010perceived esthetic outcomes failed to show significant differences between CTG and GTR at 20\u00a0years post\u2010surgery.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.19-0203","type":"journal-article","created":{"date-parts":[[2019,8,27]],"date-time":"2019-08-27T07:10:46Z","timestamp":1566889846000},"page":"377-386","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Twenty\u2010year results after connective tissue grafts and guided tissue regeneration for root 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Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erik","family":"Neukranz","sequence":"additional","affiliation":[{"name":"Private practice  Bad Soden Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katrin","family":"Nickles","sequence":"additional","affiliation":[{"name":"Department of Periodontology Center for Dentistry and Oral Medicine (Carolinum) Johann Wolfgang Goethe\u2010University Frankfurt\/Main  Frankfurt Germany"},{"name":"Private practice  Mannheim 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