Analise histologica e radiografica da influencia de substancias quimicas auxiliares e medicação intracanal no processo de reparo periapical em dentes de cães / Histological and radiographic analysis of the influence of auxiliary chemical substances and intracanal dressing on the periapical healling of dog´s teeth

AUTOR(ES)

Luciano Tavares Angelo Cintra

DATA DE PUBLICAÇÃO

2008

RESUMO

The goal of the present study was to observe through optic microscopy, the effect of different auxiliary chemical substances, used during the chemomechanical preparation, and of an intracanal dressing in the periapical healing process. Hundred-ten dental roots from 5 young adult dogs, with necrotic pulp associated to a chronic periapical lesion were endodontically instrumented with a standardized technique, just varying the auxiliary chemical substances: sterile saline (negative control 1); gel base natrosol (negative control 2); 2,5% Sodium hypochlorite (NaOCl); 2% chlorhexidine gel (CG); 2% chlorhexidine liquid (CL). After the chemo-mechanical preparation, 55 roots were immediately filled (singlevisit) and 55 roots received a calcium hydroxide dressing [Ca (OH)2]. The specimens from the multiple-visit groups were filled after 14 days. Past 270 days from the filling, the animals were sacrificed and the specimens were histologically processed. The slides were stained on H.E. or Brown and Breen techniques and were microscopically assessed using previously established criteria. The data were submitted to the Kruskal-Wallis and Dunn, with 5% as significance level. The results demonstrated that the use of CG and NaOCl as auxiliary chemical substances, associated or not to intracanal medication, provided similar results, either in inflammatory infiltrated intensity or in periapical healing

ASSUNTO(S)

endodontics endodontia

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