Avaliação histologica e biomecanica da ação da eletromagnetoterapia sobre o processo de reparo osseo junto a implantes de titanio inseridos em tibias de coelhos

AUTOR(ES)
DATA DE PUBLICAÇÃO

1999

RESUMO

The purpose of this study was a histological and biomechanical evaluation of the bone healing process in commercial pure titanium surfaces, under the action of electro-magnetic stimulation. Titanium cylinders, each being 6mm long, with a 2,6 mm diameter and having three regular "V" shaped grooves, were implanted in the tibial metaphysis of twelve albino rabbits ofthe New Zealand breed.. The animaIs were divided into two groups of six animaIs each and in one of the groups electro-magnetic stimulation was used. They were sacrified after 21 and 42 days postoperatively. The torque tests were performed in all animaIs and bone fragments removed from the implants were extracted so that pieces were prepared and analysed by means of optical microscopy. The results showed no significant histologicaI and biomechanical differences between thO stimulated and non stimulated animaIs. The implant in both groups presented osteointegration areas and the necessary torque for the loosening the implants increased with time

ASSUNTO(S)

titanio implantações dentarias ossos - regeneração

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