Pulp response of anionic lyophilized collagen matrix with or without hydroxyapatite after pulpotomy in dog's teeth

Materials Research

Léa Assed Bezerra Da Silva²  Mario Roberto Leonardo²  Paulo Nelson-filho²  Alexandra Sárzyla Medeiros²  Marcos Antonio Rossi¹ 

[1] ,University of São Paulo School of Dentistry of Ribeirão Preto Department of Pediatric DentistryRibeirão Preto SP ,Brazil

关键词: collagen;    hydroxyapatite;    calcium hydroxide;    pulpotomy;   

DOI  :  10.1590/S1516-14392006000200012

来源: SciELO

【 摘 要 】

The aim of the present study was to evaluate histologically the pulp response of anionic lyophilized collagen matrix with or without hydroxyapatite as a biomaterial pulp-capping agent in pulpotomy of dogs' teeth. Sixty pre-molar roots from three dogs were used. After pulpotomy, the remaining pulp tissue was capped with one of the following materials: Group I (20 roots): anionic lyophilized collagen matrix; Group II (20 roots): anionic lyophilized collagen matrix associated with hydroxyapatite; Group III (10 roots): calcium hydroxide (p.a.) paste in saline; Group IV (10 roots): zinc oxide eugenol cement. After 90 days the animals were killed by anesthetic overdose and the teeth were removed and submitted to histological processing. According to the histopathological results, we concluded that the zinc oxide eugenol cement and anionic lyophilized collagen matrix with or without hydroxyapatite did not present satisfactory pulp response and that calcium hydroxide is the suitable material for pulpotomy.

【 授权许可】

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