Analysis of the tissue reaction of rats to experimental implantation of based propolis pastes / Análise da reação do tecido conjuntivo de ratos ao implante de pastas experimentais à base de própolis

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The aim of this study was to evaluate the inflammatory tissue response of different based propolis pastes for endodontic use (A70D and D70D). 15 male rats of the Wistar strain, approximately 40 days of life were used. Polyethylene tubes containing different materials were divided in 4 groups: Group I - Ca(OH)2, Group II - A70D, Group III - D70D, Group IV - Control (empty tube ). The inflammatory response of subcutaneous tissue was analyzed after 7, 15 and, 30 days. After the experimental periods, animals were killed and tissues containing the implants were removed and prepared using conventional histological procedures. Microscopic semi-serial sections of 5m in thickness were stained by the hematoxylin and eosin technique (HE). The tissue reaction was evaluated using semi-quantitative and qualitative criteria. Statistical analysis was performed using the Kruskal-Wallis test with p <0.05. The results showed intense inflammatory reaction in all the groups at the 7 day period. Intense proliferation of vessels, moderate neutrophilic infiltrate and necrosis by coagulation in the group of calcium hydroxide. The intensity of the reaction decreased with significant reduction after 30 days. The A70D and D70D pastes showed similar results, but at the 30 periods the most intense reaction was found in the D70D paste. These results suggest the possibility that propolis can be used as an intracanal medication.

ASSUNTO(S)

tecido subcutâneo endodontia propolis subcutaneous tissue endodontics própolis teste material

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