Publicação: Comparison of resin push-out strength to root dentin of bovine- and human-teeth
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Aim : To compare the push-out strength of bovine- and human-root dentin and, thus, evaluate the suitability of bovine-root dentin to substitute human-root dentin for bond strength testing. Materials and Methods : Ten single-rooted human-teeth and ten bovine incisors were prepared using a #3 bur of a fiber post system (12 mm long). The posts were duplicated with resin cement (Duolink). The root canals were treated with All Bond 2 adhesive system and the resin posts were cemented using Duolink. The specimens were cut perpendicular to their long axis, yielding disc-specimens with 1.5 mm thickness, which were submitted to a push-out test (1 mm/min). Ten bond strength values per group (n = 10) were used for statistical analysis (Student t test, a =.05). Results : Statistically significant differences were found for the bond strength values between bovine- (4.1 1.3 MPa) and human-root dentin (8.6 5.7 MPa) (P =.0001). Conclusion : The push-out strengths of bovine- and human-root dentin were statistically different.
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Bovine tooth, Human-tooth, Push-out test, Root dentin, dentin bonding agent, resin cement, animal, cattle, comparative study, dental bonding, dental care, dental surgery, dentin, disease model, drug effect, endodontics, human, methodology, nonparametric test, standard, tooth crown, tooth root, ultrastructure, Animals, Cattle, Dental Bonding, Dental Marginal Adaptation, Dental Restoration Failure, Dental Stress Analysis, Dentin, Dentin-Bonding Agents, Disease Models, Animal, Humans, Post and Core Technique, Reference Standards, Resin Cements, Root Canal Preparation, Statistics, Nonparametric, Tooth Root
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Inglês
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Indian Journal of Dental Research, v. 20, n. 3, p. 332-336, 2009.
