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

Autor(es)

Léa Assed Bezerra da Silva ^[1] ; Mario Roberto Leonardo ^[2] ; Paulo Nelson-Filho ^[3] ; Alexandra Sárzyla Medeiros ^[4] ; Marcos Antonio Rossi ^[5]

Afiliação do(s) autor(es)

^[1] University of São Paulo. School of Dentistry of Ribeirão Preto. Department of Pediatric Dentistry - Brasil

^[2] University of São Paulo. School of Dentistry of Ribeirão Preto. Department of Pediatric Dentistry - Brasil

^[3] University of São Paulo. School of Dentistry of Ribeirão Preto. Department of Pediatric Dentistry - Brasil

^[4] University of São Paulo. School of Dentistry of Ribeirão Preto. Department of Pediatric Dentistry - Brasil

^[5] University of São Paulo. Faculty of Medicine of Ribeirão Preto. Department of Pathology - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 9, n. 2, p. 175-180, 2006-06-00.

Resumo

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. (AU)

• Processo FAPESP: 99/03467-8 - Avaliação histológica do tecido pulpar após pulpotomias em dentes de cães, utilizando matriz colagênica
• Beneficiário: Alexandra Sárzyla Medeiros
• Modalidade de apoio: Bolsas no Brasil - Mestrado