Influência de diferentes microestruturas de implantes osseointegráveis sobre o tecido ósseo peri-implantar: avaliação histomorfometrica em humanos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Studies have demonstrated that roughness dental implant surfaces show firmer bone fixation and an increased percentage of bone-to-implant contact (BIC%) compared to commercially pure titanium surface (machined) implants. It has also been suggested that implants with roughness surfaces can be loaded earlier then machined implants. Therefore, the purpose of this study was to evaluate the influence of implant surface topography on human bone tissue after 2 months of unloaded healing. 14 subjects with mean age of 46.87+9.45 years received 2 micro-implants each (2.5mm in diameter and 6mm in length), one test (sandblasted acid-etched surface) and one control (machined surface), either in the mandible or in the maxilla. After a healing period of 2 months, the micro-implants and the surrounding tissues were removed with a trephine burr and prepared for histologic analysis. Histometric evaluation indicated that the mean of BIC% was 21.71%+13.11% and 41.84%+9.73% to machined and roughness micro-implant surfaces, respectively (p=0.0001). Bone area within the threads was also higher for sandblasted surface implants (p=0.0014). The mean percentage of bone density did not differ between the two groups (p=0.1914). Data from the present histological study suggest that the sandblasted acid-etched implant provides a better human bone tissue response then machined implants under unloaded conditions and after a healing period of 2 months.

ASSUNTO(S)

implant surface topography/wound healing odontologia cicatrização do tecido ósseo humano/histologia em humanos human bone healing/human histology topografia da superfície de implante/cicatrização titânio/osseointegração implantes osseointegráveis/osseointegração dental implants/osseointegration titanium/osseointegration

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