Análisis densitométrico comparativo entre un nuevo biomaterial compuesto por fosfato cálcico vs. hidroxiapatita bovina en preservación alveolar. Estudio piloto

Abstract

Introduction: In the present study, bone density from the new biomaterial composed by calcium phosphate and added silica 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 silica 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 silica 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 silica the highest density.