مقايسه كلينيكي پيوند آزاد لثه (همراه اسيد سيتريك ) با پيوند بافت همبند زيراپي تليالي در پوشش ريشه هاي عريان

Clinical comparison between free gingival graft(with citric acid) subepithelial connective tissue graft in denuded roots coverage

Background and aim: Gingival recession is a relatively prevalent gingival disorder which increases with age. The purpose of this study was to compare free gingival graft technique (with citric acid) with subepithelial connective tissue graft in the coverage of denuded root surfaces of CHI and CIII Miller. Materials and Methods: Ten systemically healthy patients with at least two bilateral recession defects of clI and c1II Miller participated in this study. After oral hygiene instruction and reaching plaque index below 20% and gingival bleading index below 10%, patients entered surgical phase. For each patient, the recession was treated using free gingival graft with citric acid on one side (group A) and with subepithelial connective tissue (group B) on the other side randomly. Recession width (RW), recession depth (RD), the width of keratinized tissue (KT), probing depth and probing attachment level were measured before and three months after surgery. The results were statistically analyzed by Mann-Whitney test. Results: Keratinized tissue increased significantly after both surgical treatments, however, no significant difference was found between the groups. Furthermore, decrease in RD and RW with suhepithelial connective tissue graft technique was significantly more than that with free gingival graft. Conclusion: In agreement with the results of other studies, the present study shows subepithelial connective tissue graft as a more efficient technique for root coverage, as compared with free gingival graft.