Tags

Type your tag names separated by a space and hit enter

Fracture resistance of endodontically treated teeth restored with glass fiber posts of different lengths.
J Prosthet Dent. 2014 Jan; 111(1):30-4.JP

Abstract

STATEMENT OF PROBLEM

Endodontically treated teeth are known to have reduced structural strength. Glass fiber posts may influence fracture resistance and should be evaluated.

PURPOSE

The purpose of this study was to evaluate the influence of glass fiber post length on the fracture resistance of endodontically treated teeth.

MATERIAL AND METHODS

Forty intact human maxillary canines were selected and divided into 4 groups, the control group consisting of teeth restored with a custom gold cast post and core, with a length of two-thirds of the root. Other groups received prefabricated glass fiber posts in different lengths: group 1/3, removal of one-third of the sealing material (5 mm); group 1/2, removal of one-half of the sealing material (7.5 mm); and group 2/3, removal of two-thirds of the sealing material (10 mm). All the posts were cemented with resin cement, and the specimens with glass fiber posts received a composite resin core. All the specimens were restored with a metal crown and submitted to a compressive load until failure occurred. The results were evaluated by 1-way ANOVA, and the all pairwise multiple comparison procedures (Tukey honestly significantly difference test) (α=.05).

RESULTS

The ANOVA showed significant differences among the groups (P<.002). The Tukey test showed that the control group presented significantly higher resistance to static load than the other groups (control group, 634.94 N; group 1/3, 200.01 N; group 1/2, 212.17 N; and group 2/3, 236.08 N). Although teeth restored with a cast post and core supported a higher compressive load, all of them fractured in a catastrophic manner. For teeth restored with glass fiber posts, the failure occurred at the junction between the composite resin core and the root.

CONCLUSION

The length of glass fiber posts did not influence fracture load, but cast post and cores that extended two-thirds of the root length had significantly greater fracture resistance than glass fiber posts.

Authors+Show Affiliations

Private practice, Bauru, SP, Brazil. Department of Prosthodontics, Bauru Dental School, University of São Paulo (USP), São Paulo, Brazil.Professor, Department of Prosthodontics, Bauru Dental School, University of São Paulo (USP), São Paulo, Brazil.Professor, Department of Prosthodontics, Bauru Dental School, University of São Paulo (USP), São Paulo, Brazil.Professor, Department of Prosthodontics, Bauru Dental School, University of São Paulo (USP), São Paulo, Brazil.Professor and Research Coordinator, Department of Prosthodontics, Dental School, University of Southern Santa Catarina (UNISUL), Santa Catarina, Brazil. Electronic address: jeffripe@rocketmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24161260

Citation

Franco, Erico Braga, et al. "Fracture Resistance of Endodontically Treated Teeth Restored With Glass Fiber Posts of Different Lengths." The Journal of Prosthetic Dentistry, vol. 111, no. 1, 2014, pp. 30-4.
Franco EB, Lins do Valle A, Pompéia Fraga de Almeida AL, et al. Fracture resistance of endodontically treated teeth restored with glass fiber posts of different lengths. J Prosthet Dent. 2014;111(1):30-4.
Franco, E. B., Lins do Valle, A., Pompéia Fraga de Almeida, A. L., Rubo, J. H., & Pereira, J. R. (2014). Fracture resistance of endodontically treated teeth restored with glass fiber posts of different lengths. The Journal of Prosthetic Dentistry, 111(1), 30-4. https://doi.org/10.1016/j.prosdent.2013.09.013
Franco EB, et al. Fracture Resistance of Endodontically Treated Teeth Restored With Glass Fiber Posts of Different Lengths. J Prosthet Dent. 2014;111(1):30-4. PubMed PMID: 24161260.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture resistance of endodontically treated teeth restored with glass fiber posts of different lengths. AU - Franco,Erico Braga, AU - Lins do Valle,Accacio, AU - Pompéia Fraga de Almeida,Ana Lúcia, AU - Rubo,José Henrique, AU - Pereira,Jefferson Ricardo, Y1 - 2013/10/22/ PY - 2013/10/29/entrez PY - 2013/10/29/pubmed PY - 2014/10/17/medline SP - 30 EP - 4 JF - The Journal of prosthetic dentistry JO - J Prosthet Dent VL - 111 IS - 1 N2 - STATEMENT OF PROBLEM: Endodontically treated teeth are known to have reduced structural strength. Glass fiber posts may influence fracture resistance and should be evaluated. PURPOSE: The purpose of this study was to evaluate the influence of glass fiber post length on the fracture resistance of endodontically treated teeth. MATERIAL AND METHODS: Forty intact human maxillary canines were selected and divided into 4 groups, the control group consisting of teeth restored with a custom gold cast post and core, with a length of two-thirds of the root. Other groups received prefabricated glass fiber posts in different lengths: group 1/3, removal of one-third of the sealing material (5 mm); group 1/2, removal of one-half of the sealing material (7.5 mm); and group 2/3, removal of two-thirds of the sealing material (10 mm). All the posts were cemented with resin cement, and the specimens with glass fiber posts received a composite resin core. All the specimens were restored with a metal crown and submitted to a compressive load until failure occurred. The results were evaluated by 1-way ANOVA, and the all pairwise multiple comparison procedures (Tukey honestly significantly difference test) (α=.05). RESULTS: The ANOVA showed significant differences among the groups (P<.002). The Tukey test showed that the control group presented significantly higher resistance to static load than the other groups (control group, 634.94 N; group 1/3, 200.01 N; group 1/2, 212.17 N; and group 2/3, 236.08 N). Although teeth restored with a cast post and core supported a higher compressive load, all of them fractured in a catastrophic manner. For teeth restored with glass fiber posts, the failure occurred at the junction between the composite resin core and the root. CONCLUSION: The length of glass fiber posts did not influence fracture load, but cast post and cores that extended two-thirds of the root length had significantly greater fracture resistance than glass fiber posts. SN - 1097-6841 UR - https://www.unboundmedicine.com/medline/citation/24161260/Fracture_resistance_of_endodontically_treated_teeth_restored_with_glass_fiber_posts_of_different_lengths_ DB - PRIME DP - Unbound Medicine ER -