Comparative analysis of rat bone marrow tissue to mineral trioxide aggregate or a modified zinc-oxide eugenol sealer. / Análise microscópica comparativa do comportamento tecidual medular de ratos frente ao implante de trióxido mineral agregado ou cimento à base de pasta zinco-enólica

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

This study investigated the rat bone marrow healing associated to mineral trioxide aggregate (MTA®- Angelus) or a zinc-oxide impression paste (LS® - Vigodent) added of radiopaque substance (iodoform or bismuth subnitrate) and calcium hydroxide. The control group was composed of empty tubes. The tubes were surgically inserted in the right femur and tibia of 45 rats, resulting in 102 specimens . On each experimental period of 30, 60 and 90 days after surgical implantation, seventeen animal were randomly killed, and had their right leg removed to be fixed, decalcified and embedded in parafin. After histological procedures, the tissue phenomena were examined under light microscope, in a blind way, based on a qualitative scale. The statistical tests showed anticipated repair associated with mineral trioxide aggregate (p≥ 0.05). No statistical differences were found between inflammatory behaviour of both radiopaque agents (p≥0.05). The calcium hydroxide powder added to zinc-oxide eugenol sealer seemed not to improve its biological performance (p≥0.05).

ASSUNTO(S)

mta ratos medula óssea de animal

ACESSO AO ARTIGO

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