Fractal analysis in cone-beam computed tomography and panoramic radiography images of native bone before and after sinus grafts

Objective: Compare the fractal analysis (FA) of the graft of a synthetic hydroxyapatite and its association with L-PRF, after elevation of the maxillary sinus floor, compared with native bone. Materials and Methods: A sample of 20 patients was included and cone-beam computed tomography (CBCT) and theFAwere performed in 10 (T1) and 180 days (T2) after the surgery. Panoramic radiographs were performed in T2. Results: In the CBCT, there was a statistically significant difference (p <0.05) when comparing the mean values of the FA between Osteogen® + L-PRF in T1 and T2, also between T1 and T2 for Osteogen® and there was no statistically significant difference (p> 0.05) between Osteogen®+L-PRF in T1 with Osteogen® in T1, and also between Osteogen®+ L-PRF in T2 with Osteogen® in T2, and between Osteogen® and Osteogen® + L-PRF compared with native bone values. Between FA of the CBCT and panoramic radiography, the values of the graft area and native bone were higher in the CBCT; with statistically significant difference. Conclusion: The values of the FA showed no correlation of values between the tomographic and radiographic techniques presented. Thus, different bone reconstruction patterns obtained in grafts should be considered in relation to native bone.