The Qualtrics survey tool sent out automated emails at 24 hours, 72 hours, 1-week and 2-week time points from the time of pre-surgery survey completion. Surveys included: (1) OHIP-14 questionnaire, which includes 14 questions related to seven different patient domains; (2) What is your pain at the palatal harvest site on a scale of 0-10? (NRS-11); and (3) Did you take any mediation today to relieve pain or swelling? (yes/no).

After informed consent is obtained at the pre-op appointment, subjects undergoing mucogingival surgery will be given a sleep monitoring device (SleepImage® Ring 2019, SleepImage, Denver, CO) and will complete a baseline QoL (Qualtrics XM®, 2002, Qualtrics, Seattle WA). The sleep monitoring app will be downloaded on subjects' phones and each subject will be briefed on the function of the application. Subjects will be instructed to wear the device nightly throughout the study. The subject will be instructed to complete the same QoL questionnaire at 24 hours, and 72 hours, as well as at the one-week and two-week post-operative appointments.

At 1- and 2- weeks, patients returned for post-operative appointments. At the follow-up appointment the surgeons were asked to document the presence of suppuration or bleeding at the palatal wound site. A standardized photograph was then taken with the following parameters (F-stop: 29, ISO: 200, Shutter Speed: 125). Three calibrated, blinded examiners then assessed the palatal wound based on the Landry et al palatal healing index.

The test group had approximately 40 ml of whole venous blood collected from their antecubital fossa (R/L) prior to surgical start for the fabrication of PRF. Tubes were placed immediately into a US Food and Drug Administration (FDA)-approved horizontal centrifuge (Horizon 6 Drucker Diagnostics; Port Matilda, PA), and spun at 2300 rpm (700 g) for 16 min. After the centrifugation was complete, the PRF matrices were compressed into membranes. At the completion of surgery, PRF membranes (1-3) were used as a wound dressing at the harvest site. A palatal stent was used to secure the PRF via compression only, and no sutures were utilized for fixation at the harvest sites. Patients were instructed not to remove the palatal stent for 48 hours.

The Qualtrics survey tool sent out automated emails at 24 hours, 72 hours, 1-week and 2-week time points from the time of pre-surgery survey completion. Surveys included: (1) OHIP-14 questionnaire, which includes 14 questions related to seven different patient domains; (2) What is your pain at the palatal harvest site on a scale of 0-10? (NRS-11); and (3) Did you take any mediation today to relieve pain or swelling? (yes/no).

The additive OHIP-14 score served as the primary outcome variable. The quality of life survey was completed pre-surgically, 24 hours, 72 hours, 1 week, and 2 weeks.

A sleep monitoring device was issued to patients following informed consent (SleepImage® Ring 2019, SleepImage, Denver, CO). The sleep monitoring app will be downloaded on subjects' phones and each subject will be briefed on the function of the application. Subjects will be instructed to wear the device nightly throughout the study.

The Qualtrics survey tool sent out automated emails at 24 hours, 72 hours, 1-week and 2-week time points from the time of pre-surgery survey completion. Survey question: What is your pain at the palatal harvest site on a scale of 0-10? (NRS-11)