Comparative densitometric analysis between a new bone graft material composed of calcium phosphate vs. bovine hydroxyapatite in alveolar ridge preservation. A pilot study

Resumen

Introduction: In the present study, bone density from the new biomaterial composed by calcium phosphate and added silicon is compared with bovine hydroxyapatite by means of Hounsfield units in alveolar ridge preservation. Alveolar ridge preservation is a surgical technique proposed to reduce bone resorption caused by dental extraction, using a bone graft. This technique´s final goal is to facilitate implant insertion and rehabilitation. Materials and methods: A study was carried out on 6 patients from the Faculty of Dentistry of the Complutense University of Madrid performing the technique of alveolar ridge preservation. Two groups were established, a test group in which the alveolar socket was filled with calcium phosphate and added silicon and a control group where the socket was filled with bovine hydroxyapatite. After 3 months, a cone-beam computed tomography was performed to evaluate the bone density achieved by both biomaterials. Results: The average bone density achieved in the group treated with calcium phosphate and added silicon was 1100,40 ± 111,19 Hounsfield units whereas in the group treated with bovine hydroxyapatite the average bone density was 1029,46 ± 95,16 Hounsfield units. Conclusions: Both biomaterials seem to present a similar behaviour in terms of densitometric results obtaining a density greater than 1000 Hounsfield units, having the calcium phosphate and added silicon the highest density.