European Journal of Prosthodontics and Restorative Dentistry

Effect of increased post length due to the presence of the remaining coronal structure on the fracture strength of post-retained restorations

Abstract

Abstract - This study evaluated the effects of the remaining coronal tissue and post type on the fracture strength of incisors. Sixty human maxillary central incisors were sectioned at the cemento-enamel junction or at 2 mm above this junction. The roots received cast cores and posts, fibre posts, or relined fibre posts (n = 10 each). A compressive load was applied over the cores until fracture. In the absence of coronal structure, the fracture strength did not differ among the post types evaluated. In the presence of remaining coronal structure, the fracture strength was higher in specimens with cast cores and posts.

KEYWORDS: Compressive strength; Post and core technique; Dental restoration.

Authors

J.L. Rodrigues, P.I. Seraidarian, D.D. Oliveira, W.C. Jansen, K.P.S.Alves, A.L. Faria-e-Silva

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