Sealing ability of castor oil polymer as a rootend filling material
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Data
2009-01-01
Autores
De Martins, Giovana Ribeiro [UNESP]
Talge Carvalho, Claudio Antonio [UNESP]
Valera, Marcia Carneiro [UNESP]
De Oliveira, Luciane Dias [UNESP]
Buso, Leonardo [UNESP]
Carvalho, Alessandra Sverberi [UNESP]
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Resumo
objective: The purpose of this study was to evaluate the sealing ability of castor oil polymer (COP), mineral trioxide aggregate (MTA) and glass ionomer cement (GIC) as root-end filling materials. Forty-five single-rooted human teeth were cleaned and prepared using a step-back technique. The apical third of each root was resected perpendicularly to the long axis direction. All teeth were obturated with gutta-percha and an endodontic sealer. After, a root-end cavity with 1.25-mm depth was prepared using a diamond bur. The specimens were randomly divided into three experimental groups (n=15), according to the root-end filling material used: G1) COP; G2) MTA; G3) GIC. The external surfaces of the specimens were covered with epoxy adhesive, except the root-end filling. The teeth were immersed in rhodamine B dye for 24 hours. Then, the roots were sectioned longitudinally and the linear dye penetration at the dentin/material interface was determined using a stereomicroscope. ANOVA and Tukey's tests were used to compare the three groups. The G1 group (COP) presented smaller dye penetration, statistically different than the G2 (MTA) and G3 (GIC) groups (p<0.05). No statistically significant difference in microleakage was observed between G2 and G3 groups (p>0.05). The results of this study indicate that the COP presented efficient sealing ability when used as a root-end filling material showing results significantly better than MTA and GIC.
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Palavras-chave
Castor oil polymer, Marginal sealing, Microleakage, Root-end filling material
Como citar
Journal of Applied Oral Science, v. 17, n. 3, p. 220-223, 2009.