Fracture resistance and stress distribution of weakened teeth reinforced with a bundled glass fiber–reinforced resin post

Autor: Ricardo Toledo Abreu, Guilherme Schmitt de Andrade, Carlos Rocha Gomes Torres, Amjad Abu Hasna, Cláudio Antonio Talge Carvalho, Alexandre Luiz Souto Borges, Thaís da Silva Alves Santos, João Paulo Mendes Tribst
Přispěvatelé: Oral Regenerative Medicine (ORM), Universidade Estadual Paulista (UNESP)
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Santos, T D S A, Abu Hasna, A, Abreu, R T, Tribst, J P M, de Andrade, G S, Borges, A L S, Torres, C R G & Carvalho, C A T 2022, ' Fracture resistance and stress distribution of weakened teeth reinforced with a bundled glass fiber–reinforced resin post ', Clinical Oral Investigations, vol. 26, no. 2, pp. 1725-1735 . https://doi.org/10.1007/s00784-021-04148-4
Clinical Oral Investigations, 26(2), 1725-1735. Springer Verlag
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1432-6981
Popis: Made available in DSpace on 2022-05-01T08:44:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01 Objectives: To make an in vitro assessment of fracture resistance of weakened and non-weakened teeth receiving intraradicular reinforcement using Rebilda bundled glass fiber–reinforced composite posts (GT), Rebilda conventional glass fiber posts (RP), or both systems combined (GT + RP). Materials and methods: Eighty sound bovine incisors were prepared and divided randomly into eight groups as follows: (a) nWnR: without simulating weakness, and without intraradicular reinforcement; (b) WnR: simulating weakness, but without intraradicular reinforcement; (c) nWGT: without simulating weakness, but with GT; (d) WGT: simulating weakness, and with GT; (e) nWRP: without simulating weakness, but with RP; (f) WRP: simulating weakness, and with RP; (g) nWGTRP: without simulating weakness, but with GT + RP; (h) WGTRP: simulating weakness, and with GT + RP. The specimens were subjected to the load-to-fracture test using the DL-2000MF universal testing machine. The finite element method assessed the mechanical behavior and stress distribution in endodontically treated teeth. Results: The groups nWGTRP and WGTRP presented the best results in the load-to-fracture test, with the former being better than the latter, but with no statistically significant difference (P > 0.05). However, there was a significant difference between these and the other groups (P < 0.05), except for nWRP. Stress distribution inside the canal wall was different among the groups, with promising mechanical behavior for nWGTRP and nWRP. Conclusions: The Rebilda conventional fiber post (RP), combined with the Rebilda bundled glass fiber–reinforced composite post (GT) improves the resistance and stress distribution of immature teeth. Clinical relevance: Longitudinal fracture is less frequent in teeth restored with GT and RP posts. Department of Restorative Dentistry Endodontics Division Institute of Science and Technology São Paulo State University (UNESP), Av. Francisco José Longo 777, São Dimas, SP Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP) Department of Restorative Dentistry Operative Dentistry Division Institute of Science and Technology São Paulo State University (UNESP) Department of Restorative Dentistry Endodontics Division Institute of Science and Technology São Paulo State University (UNESP), Av. Francisco José Longo 777, São Dimas, SP Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP) Department of Restorative Dentistry Operative Dentistry Division Institute of Science and Technology São Paulo State University (UNESP)
Databáze: OpenAIRE
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