Histopathological and histomicrobiological study of root canal therapy medication, comparison of calcium hydroxide versus gutta-percha with zinc oxide/eugenol in the teeth of dogs

Pesquisa Veterinária Brasileira

Léslie M. Domingues-falqueiro¹  Marco A. Gioso¹  João G. Padilha Filho² 

[1] ,Universidade de São Paulo Faculdade de Medicina Veterinária e Zootecnia Departamento de CirurgiaSão Paulo SP ,Brazil

关键词: Apical delta;    endodontic;    gutta-percha;    calcium hidroxide;    microorganisms;    dogs;    Delta apical;    endodontia;    guta-percha;    hidróxido de cálcio;    microrganismos;   

DOI  :  10.1590/S0100-736X2007000200003

来源: SciELO

【 摘 要 】

The presence of microorganisms in dental structures with experimentally induced necrosis was evaluated. The materials were tested to evaluate their antimicrobial activity and tissue repair efficacy. Four dogs were used in this experiment, with a total of 64 roots of premolar teeth, divided into three groups. The root canals of Group I were filled with gutta-percha and zinc oxide/eugenol cement; Group II were filled with calcium hydroxide, and Group III were not filled. All animals were clinically and radiographically examined 15 days after surgery andthen again every subsequent 15 days until 120 days, when the teeth were extracted en bloc.Histopathological analysis showed inflammatory infiltration, cement and bone resorption andnecrotic tissue in the apical delta in different proportions. Histomicrobiological analysis showedthe presence of microorganisms inside the teeth structures, with different concentrationsaccording to the treatment used. There was statistical significance between the groups(p>0.05). Gutta-percha with zinc oxide/eugenol demonstrated good antimicrobial activity;calcium hydroxide was not efficient. The conclusion of this study is that gutta-percha withzinc oxide/eugenol is the better protocol for filling root canals in dogs.

【 授权许可】

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