Author(s):
1. Željka Kojić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
2. Olivera Dolić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
3. Nataša Trtić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
4. Nataša Knežević, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
5. Andrija Bošnjak, Medicinski fakultet Rijeka, Croatia

Abstract:
Abstract: The hard palate is a usual source of soft-tissue grafts for both periodontal and peri-implant plastic surgery procedures. The advantages of using an FGG technique are high predictability and relative ease of technique. The healing process at the donor site proceeds by secondary intention or granulating in and takes about two to four weeks depending on the width and thickness of the tissue removed. Many patients at the donor site experience traumatic and postoperative discomfort with occasional bleeding and delayed healing. The platelet rich fibrin (PRF) is one of the good options for the wound coverage of donor site after FGG so as to reduce the pain perception to patient and faster wound healing. After harvesting FGG, the experimental group (n = 15) received PRF clot membranes at the palatal wound and sutured with a polypropylene 5-0 horizontal mattress suture, and the control group (n = 15) was not put on the palate. The Landry Wound Healing Index (LWHI) and H2O2 bubbling test results for the complete wound epithelization (CWE) rates were recorded 1 and 2 weeks postoperatively. All patients were asked to record a visual analogue scale (VAS) value for pain and the number of analgesics taken during the 7 days after harvesting FGG. The LWHI improved significantly throughout the group 2 weeks postoperatively compared with the first week (p<0.05). There were statistically significant differences among groups at first and second week. The CWE ratios were 61.3% in the test group and 11.8% in the control group at 1 week, respectively. At 2 weeks, test group showed 100% CWE compared with 35.7% in the control group. The VAS score 1 day postoperatively was significantly higher in the control group (p<0.05). There was no significant differenceamong the groups at day 4. PRF palatal bandages significantly reduced postoperative pain and discomfort and in the short-term, PRF significantly promotes the re-epithelialization of the wound (on day 14).

Key words:
Fibrin bogat trombocitima, Slobodni mukogingivalni autotransplantat, Uzimanje SMAT-a, Zarastanje, Donor mjesto, Parodontalna plastična hirurgija

Thematic field:
SYMPOSIUM B - Biomaterials and nanomedicine

Date of abstract submission:
08.07.2019.

Conference:
Contemporary Materials 2019 - Savremeni Materijali