PULPAL AND PERIAPICAL RESPONSE OF DOGS’ TEETH AFTER PULPOTOMY AND USE OF ENAMEL MATRIX DERIVATIVE AS A CAPPING AGENT
Journal Title: Revista Científica do CRO-RJ / Rio de Janeiro Dental Journal - Year 2019, Vol 4, Issue 2
Abstract
Objective: To evaluate the pulpal and periapical response of dogs’ teeth after pulpotomy and use of Enamel Matrix Derivative (EMD) as capping agent. Methods: Pulpotomy was performed in 40 teeth from 4 dogs and the remaining pulp tissue was recovered with the following materials: Groups I and IV: EMD (Emdogain®); Groups II and V: calcium hydroxide; Groups III and VI: zinc oxide and eugenol cement. After 7 days (Groups I, II, and III) and 70 days (Groups IV, V, and VI), the animals were euthanized and the teeth were removed and processed for histological analysis; were analyzed using Kruskal-Wallis test followed by Dunn test or Mann Whitney test ( =0.05). Results: 7-day period: in Group I, it was observed a mild to moderate inflammatory infiltrate and intense vascular proliferation while Group II presented a mild inflammatory infiltrate and an intact pulp tissue (p < 0.05). Group III presented a moderate to severe inflammatory infiltrate. 70- day period: Groups IV and VI showed no dentin bridge formation, the remaining pulp tissue presented necrotic areas with inflammatory cells in the periapical region and bone and cementum resorption (p > 0.05). In Group V, there was dentin bridge formation, absence of inflammation and absence of mineralized tissue resorption (p < 0.05). Conclusion: EMD as a capping material after pulpotomy did not show either satisfactory tissue response or capacity of inducing deposition of mineralized tissue in dental pulp.
Authors and Affiliations
Léa Assed Bezerra da Silva, Lisa Danielly Curcino Araujo, Marcela Martín del Campo Fierro, Francisco Wanderley Garcia de Paula Silva, Raquel Assed Bezerra da Silva, Paulo Nelson Filho, Alberto Consolaro, Mário Roberto Leonardo
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