Sealing ability of castor oil polymer as a root-end filling material.
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.
de Martins
Giovana Ribeiro
GR
Dental School of São José dos Campos, São Paulo State University, São José dos Campos, SP, Brazil.
Carvalho
Claudio Antonio Talge
CA
Valera
Marcia Carneiro
MC
de Oliveira
Luciane Dias
LD
Buso
Leonardo
L
Carvalho
Alessandra Sverberi
AS
D017607:Aluminum Compounds; D001704:Biopolymers; D017610:Calcium Compounds; D002368:Castor Oil; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D004338:Drug Combinations; D005899:Glass Ionomer Cements; D006801:Humans; D010087:Oxides; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials; D017640:Silicates
D017607:Aluminum Compounds; D001704:Biopolymers; D017610:Calcium Compounds; D004338:Drug Combinations; D005899:Glass Ionomer Cements; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002368:Castor Oil