Abstract
The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany) 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1–4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p < 0.05). The apical sealing ability of Biodentine was comparable to MTA at any apical plug thickness.
Highlights
Trauma or caries might result in pulp necrosis in young permanent teeth
mineral trioxide aggregate (MTA) is currently used as a root-end filling material in teeth with open apices [6,7,8,9,10]
A statistically significant difference was not observed between the microleakage values of MTA and Biodentine regardless of apical plug thickness (p > 0.05)
Summary
Trauma or caries might result in pulp necrosis in young permanent teeth. Pulp necrosis in immature permanent teeth will eventually cause cessation of root closure and root maturation. Canal walls become thin and fragile and apex of tooth remains open Under these circumstances, root canal instrumentation will not enable the achievement of an adequate apical stop [1,2,3]. Endodontic treatment of immature permanent teeth with open apices involves inducing of apical closure by apexification procedures [4]. Apexification with calcium hydroxide has been a proven approach and has been successfully performed over a long time. This method requires multiple treatment sessions and due to the presence of thin roots or prolonged exposure of root dentin to calcium hydroxide, the tooth will be more susceptible to root fracture [1, 5]. MTA is currently used as a root-end filling material in teeth with open apices [6,7,8,9,10]
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