{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T17:08:07Z","timestamp":1776445687725,"version":"3.51.2"},"reference-count":0,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[1998,2,1]],"date-time":"1998-02-01T00:00:00Z","timestamp":886291200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[1998,2]]},"abstract":"<jats:p>T<jats:sc>he objective of the study<\/jats:sc> was to compare the clinical efficacy of 3 surgical approaches in the treatment of deep recession type defects. Fifty\u2010four (54) gingival recessions \u2265 5 mm were randomly assigned, to 1 of the 3 treatment groups by blocking the prognostic variables. The first group was treated with a guided tissue regeneration (GTR) procedure using a bioabsorbable membrane, the second with non\u2010resorbable membrane, and the third with a mucogingival surgical approach consisting of a connective tissue graft combined with a coronally advanced flap (bilaminar technique). No differences, in terms of baseline oral hygiene and defect characteristics, were observed among the 3 groups showing an effective blocking approach. The 1\u2010year results indicated that 1) all treatment approaches resulted in clinically significant root coverage and attachment gain; 2) a statistically significant treatment effect (<jats:italic>P<\/jats:italic> = 0.012, ANOVA) was observed comparing the bioabsorbable (4.9 \u00b1 0.3 mm), the non\u2010resorbable (4.5 \u00b1 0.8 mm), and the bilaminar (5.3 \u00b1 0.7 mm) groups, in terms of root coverage; 3) the difference in terms of root coverage between the bilaminar and the non\u2010resorbable membrane groups was statistically significant while differences between the 2 GTR groups or between the bilaminar and the bioabsorbable membrane groups did not reach statistical value; 4) the 95% confidence intervals for the proportions of complete successes showed a similar pattern; 5) no statistical difference was demonstrated in the amount of attachment gain among the 3 groups (<jats:italic>P<\/jats:italic> = 0.73, ANOVA). A regression model showed that the amount of root coverage was significantly affected by the initial recession depth, the procedure and smoking habits: a poorer root coverage result is expected in case of shallow recession type defects, when either bioabsorbable (<jats:italic>P<\/jats:italic> &lt; 0.05) or non\u2010resorbable (<jats:italic>P<\/jats:italic> &lt; 0.001) membranes are used instead of a bilaminar technique and if the patient smokes (<jats:italic>P<\/jats:italic> &lt; 0.01). It was concluded that the mucogingival bilaminar technique is at least as effective as GTR procedures in the treatment of gingival recession \u2265 4 mm and thus recession depth is not the parameter which influences the selection of the surgical procedure. <jats:italic>J Periodontol 1998;69:138\u2013145<\/jats:italic>.<\/jats:p>","DOI":"10.1902\/jop.1998.69.2.138","type":"journal-article","created":{"date-parts":[[2012,3,20]],"date-time":"2012-03-20T13:19:11Z","timestamp":1332249551000},"page":"138-145","source":"Crossref","is-referenced-by-count":79,"title":["Mucogingival Versus Guided Tissue Regeneration Procedures in the Treatment of Deep Recession Type Defects"],"prefix":"10.1002","volume":"69","author":[{"given":"G.","family":"Zucchelli","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Clauser","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"De Sanctis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Calandriello","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[1998,2]]},"container-title":["Journal of Periodontology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/pdf\/10.1902\/jop.1998.69.2.138","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T09:53:17Z","timestamp":1760867597000},"score":1,"resource":{"primary":{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/10.1902\/jop.1998.69.2.138"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,2]]},"references-count":0,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1998,2]]}},"alternative-id":["10.1902\/jop.1998.69.2.138"],"URL":"https:\/\/doi.org\/10.1902\/jop.1998.69.2.138","archive":["Portico"],"relation":{},"ISSN":["0022-3492","1943-3670"],"issn-type":[{"value":"0022-3492","type":"print"},{"value":"1943-3670","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,2]]}}}