The influence of resin composite with high fiber aspect ratio on fracture resistance of severely damaged bovine incisors

Lassila, Lippo and Oksanen, Viivi and Fráter, Márk and Vallittu, Pekka K. and Garoushi, Sufyan (2020) The influence of resin composite with high fiber aspect ratio on fracture resistance of severely damaged bovine incisors. DENTAL MATERIALS JOURNAL, 39 (3). pp. 381-388. ISSN 0287-4547

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Abstract

The aim was to determine the fracture-behavior of incisors restored with different post-core foundations and crown made of conventional composite (PFC, G-aenial Anterior). Forty bovine-incisors were cut and divided into 5 groups. Group A had teeth restored using fiber-post and Gradia Core as core build-up and crown of PFC. Group B contained teeth restored with fiber-post and core made of everX Flow and crown of PFC. In Group C, the teeth were restored with everX Flow as post-core and crown of PFC. Group D, post-core-crown restorations were indirectly made from CERASMART. Group E, teeth were restored with Gradia Core as post-core and crown of PFC. Restored teeth were statically-loaded until fracture. ANOVA revealed that restoration technique significantly affected load-bearing capacity (p<0.05). Restored incisors (Group B) had the highest load-bearing capacity (443 N) among all groups. Using everX Flow as core material with fiber-post is promising to strengthen structurally compromised incisors.

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