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Title: Histopathological evaluation of root canal filling materials for primary teeth
Author: Silva, Léa Assed Bezerra da
Leonardo, Mário Roberto
Oliveira, Daniela S. B. de
Silva, Raquel Assed Bezerra da
Queiroz, Alexandra Mussolino de
Gatón Hernández, Patrícia
Nelson Filho, Paulo
Keywords: Materials dentals
Dental materials
Issue Date: 2010
Publisher: Fundação Odontológica de Ribeirão Preto
Abstract: This study aimed to assess the response of apical and periapical tissues of dogs¿ teeth after root canal filling with different materials. Forty roots from dogs¿ premolars were prepared biomechanically and assigned to 4 groups filled with: Group I: commercial calcium hydroxide and polyethylene glycol-based paste (Calen®) thickened with zinc oxide; Group II: paste composed of iodoform, Rifocort® and camphorated amonochlorophenol; Group III: zinc oxide-eugenol cement; Group IV: sterile saline. After 30 days, the samples were subjected to histological processing. The histopathological findings revealed that in Groups I and IV the apical and periapical regions exhibited normal appearance, with large number of fibers and cells and no resorption of mineralized tissues. In Group II, mild inflammatory infiltrate and mild edema were observed, with discrete fibrogenesis and bone resorption. Group III showed altered periapical region and thickened periodontal ligament with presence of inflammatory cells and edema. It may be concluded that the Calen paste thickened with zinc oxide yielded the best tissue response, being the most indicated material for root canal filling of primary teeth with pulp vitality.
Note: Reproducció del document publicat a:
It is part of: Brazilian Dental Journal, 2010, vol. 21, núm. 1, p. 38-45
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ISSN: 0103-6440
Appears in Collections:Articles publicats en revistes (Odontoestomatologia)

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