ĐƯỜNG KÍNH SỢI FIBRIN VÀ ĐỘ XỐP CỦA A-PRF+ DƯỚI KÍNH HIỂN VI ĐIỆN TỬ QUÉT

Objectives: The aim of this study is to evaluate mean fibrin fiber diameter and porosity of PRF under scanning electronic microscope. Methods: A descriptive study on 10 patients who were willing to have PRF placement in tooth socket after third molar extraction. 20 ml of blood was obtained from each patient within 2 blood collecting tube. The blood samples were then centrifuged with A-PRF+ mode (Duo Quattro PRF system). One PRF block was placed into tooth socket right after third molar exraction. The other one was cut into 3 parts from plasma end to red blood cells end. Those PRF parts were fixed and underwent preparation procedure for scanning electronic microscope evaluation. Results: From plasma end to red blood cells end, fibrin fiber diameter were 198.519±71.655 nm, 197.519±74.625 nm, 194.270±78.710 nm, PRF porosity were 11.317±2.699%, 10.824 ± 3.610%, 10.521 ± 3.238%, respectively. Fibrin fiber diameter and PRF porosity of a whole PRF block is 196.774±74.590 nm and 10.891±3.144%. The difference of fibrin fiber diameter and PRF porosity in diferrent parts were not statistically significant. Conclusion: PRF block were centrifuged with low-speed centrifugation concept (A-PRF+ mode) is relatively homogeneous in fibrin fiber diameter and PRF porosity. Keywords: third molar extraction, scanning electronic microscope, fibrin fiber diameter, PRF porosity