Aplicación del β-fosfato tricálcicoen alveolos frescos post extracción versus regeneración ósea no inducidaestudio clínico e histológico comparativo

Abstract

The objective of this study was to compare the capacity of β tricalcium phosphate to facilitate bone formation in the soc ket and prevent post-extraction alveolar resorption, versus not induced bone regeneration which it occurs physiologica - lly in the socket from a point of view clinical and histological. After premolar extraction in 33 patients, the sockets we - re filled with beta-tricalcium phosphate in 16 patients, and in 17 no biomaterial was used. Six months later, during the implant placement surgery, a trephine was used to harvest the bone samples which were processed for histological and histomorphometric variables, and comparing the results ob - tained in both groups. Clinical outcomes were satisfactory. Histological study showed: partial filling with alveolar bone of appropriate maturation and mineralization for the healing time, osteoblastic activity and bone lacunae containing osteocytes. The bioma - terial was not completely resorbed al six months. From a clinic point of view, the results are satisfactory in both groups, based on the success rate in placing implants. In addi - tion, it is confirmed that the β -tricalcium phosphate is a ma - terial capable of achieving preservation of the alveolar bone when it is positioned in the inmediate post-extraction socket, demostrating a solid bone maduration and absence of interfa - ce. Further studies are needed comparing this technique with other available biomaterials, with growth factors and with ba - reer techniques.