After administration of local anesthesia (2% articaine hydrochloride with epinephrine 1:100,000), palatal thickness will be measured by perpendicularly inserting a Michigan-O periodontal probe from the corners of the rectangular donor area. Epithelialized gingival graft will be harvested. After a rectangular-shaped initial incision, a graft with 1-1.5 mm thickness will be harvested approximately 1.5 to 3 mm away from the gingival margins of the upper teeth. The donor site will be closed with a gelatin sponge + cyanoacrylate + suspending sutures.

After local anesthesia (2% articaine hydrochloride with epinephrine 1:100,000) administration, palatal thickness will be measured by perpendicularly inserting a Michigan-O periodontal probe from the corners of the rectangular donor area and the mean value will be recorded as palatal tissue thickness. The epithelialized gingival graft will be harvested using 15 knives. After a rectangular-shaped initial incision, a graft with 1-1.5 mm thickness will be harvested approximately 1.5 to 3 mm away from the gingival margins of the upper teeth. The donor site will be closed with a gelatin sponge and cyanoacrylate without sutures.

The donor site will be closed both with gelatin sponge +Cyanoacrylate (Spongostan®, Ethicon, USA)+ supporting sutures (control group)

Patients score their daily donor site pain perception using visual analog score level by giving numbers from 0 to 10 according to the visual analog scale (0: no pain, 1: minimal pain, 10: severe pain)

Patients will record presence or absence of secondary bleeding (presence=1 or absence=0).

Dimensions will be measured during surgery by clinician using Michigan O probe (will be reported in mm)

Dimensions will be measured during surgery by clinician using Michigan O probe.(will be reported in mm)