The goal of this clinical trial is to assess the effect of Nano-biofusion gingival gel (NBF) on wound healing at the palatal donor site following soft tissue graft surgery and compare it to placebo gel. The main questions it aims to answer are: * Does NBF gel enhance wound healing after graft harvesting from the palate? * Does NBF gel reduce the number of inflammatory mediators after surgery? * Does NBF gel reduce pain and discomfort at the palatal donor site? Researchers will compare NBF gel to a placebo (a look-alike gel that does not contain the active ingredients) to see if NBF gel enhances wound healing. Study steps include: * Participants will apply the assigned gel on the surgical wound 4 times a day for 4 weeks. * Clinical photographs and measurements will be obtained on days (0, 1, 2, 4, 7, 15, 21, 30). * Wound fluid samples will be collected on days (0, 1, 2, 4, 7). * Participants will be asked about the level of pain and analgesic consumption on each follow-up visit.
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Wound area
Timeframe: On each follow up visit: T1 (24 hours after the surgery), T2 (2 days after the surgery), T3 (4 days after the surgery), T4 (7 days after the surgery), T5 (15 days after the surgery), T6 (21 days after the surgery), T7 (30 days after the surgery)