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Influência do curativo de demora à base de hidróxido de cálcio na reparação dos tecidos apicais e periapicais de dentes sem vitalidade pulpar com ou sem lesão periapical visível radiograficamente: estudo histopatológico em dentes de cães

Authors: Silva, Ronaldo Souza Ferreira da;

Influência do curativo de demora à base de hidróxido de cálcio na reparação dos tecidos apicais e periapicais de dentes sem vitalidade pulpar com ou sem lesão periapical visível radiograficamente: estudo histopatológico em dentes de cães

Abstract

O presente estudo teve como objetivo avaliar o efeito do emprego do curativo de demora à base de hidróxido de cálcio na reparação apical e periapical após tratamento endodôntico de dentes de cães sem vitalidade pulpar, com ou sem lesão periapical visível radiograficamente. Os canais radiculares de 80 raízes de pré-molares superiores e inferiores foram submetidos ao método de indução experimental de lesões periapicais ou mantidos expostos ao meio bucal por 30 dias para contaminação. Realizado o preparo biomecânico, os canais radiculares foram obturados em única sessão ou receberam curativo de demora com pasta à base de hidróxido de cálcio por 15 dias, quando foram obturados com cimento AH Plus. Após o período de 180 dias os animais foram mortos e as peças submetidas ao processamento histológico e coradas pelo HE e Tricrômico de Mallory para avaliação da influência da presença da lesão periapical radiográfica e do emprego do curativo de demora na reparação apical e periapical. Os resultados obtidos demonstraram que o curativo de demora à base de hidróxido de cálcio foi de fundamental importância para a reparação dos tecidos apicais e periapicais, com diferença significante com relação aos grupos obturados em sessão única (p<0,05).

The aim of this study was to evaluate the apical and periapical repair after endodontic treatment of teeth with pulp necrosis, with or without radiographic chronic periapical lesion in mongrel dogs. Eighty root canals of premolars teeth were used. Half of them was submitted to the experimentally induced chronic lesions method and the others was opened to the oral environment for 30 days for contamination. After biomechanical preparation, the root canals were filled in a single visit or they received a root canal dressing with calcium hydroxide for 15 days before root canal filling with AH Plus sealer. The animals were killed, after 180 days, by anesthetic overdose, and the histological sections were stained with H/E and Mallory Trichromic for microscopic evaluation of the influence of radiographic periapical lesion and the use of root canal dressing in the apical and periapical repair. The obtained results showed that the intracanal dressing based on calcium hydroxide was essential to the repair of the apical and perapical tissues, with significant difference to the groups filled in a single visit (p<0,5).

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pós-graduação em Odontologia - FOAR

Country
Brazil
Keywords

Necrosis, Calcium hydroxide, Necrose da polpa dentária, Endodontia, Hidroxido de calcio, Endodontics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green