This case report aimed to describe the variation in bone level in post-extraction sockets treated with the tricalcium phosphate ceramic graft. The population consisted of six patients who underwent third molar extraction, alveolar filling with the tricalcium phosphate ceramic graft, and suture closure; Subsequently, two computed axial tomography (CAT) scans were performed at Litomédica located at the Marly Clinic, Bogotá; the first immediate post-surgery and the second four months post-exodontia. CT allows you to obtain a density map (tomodesitometry) of different topographic sections processed by computer. Tomographic slices are presented according to different spatial orientations such as axial slices, sagittal slices and frontal slices. Results and conclusions: When using tricalcium phosphate in granulated form and with particles between 500 and 1000 microns, the bone level shows a lower reduction than that reported by the literature, which establishes a reduction of at least 25%. In the preliminary results analyzed from the initial population studied, the success of bone repair can be predicted in clinical terms and CT with tricalcium phosphate in the infrabony defects produced after the surgical extraction of lower third molars.