Adjunctive 0.8% Hyaluronic Acid Gel in Open-Flap Surgery for Thin Gingival Phenotype in Patients With Periodontitis

After root surface cleaning and infected cement removal, 0.8% HA gel was applied to the root surface, bone, and inner surface of the flap and left for 2 minutes.

In the control group, instead of HA gel, the area was irrigated with physiological saline solution.