Covered Socket Residuum (CSR) in Former Third Molar Sockets Despite Platelet-Rich Fibrin: A Prospective Randomized Controlled Split-Mouth Clinical Study.

For upper molars, the BSM + PRF group showed a higher mineralized bone area and a correspondingly lower non-mineralized area compared with PRF alone; however, these differences did not reach statistical significance and were associated with high variability ( Figure 5 B).

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