Tags

Type your tag names separated by a space and hit enter

Fracture strength of flared bovine roots restored with different intraradicular posts.
J Appl Oral Sci. 2009 Nov-Dec; 17(6):574-8.JA

Abstract

OBJECTIVE

The aim of this study was to evaluate the fracture strength and failure mode of flared bovine roots restored with different intraradicular posts.

MATERIAL AND METHODS

Fifty bovine incisors with similar dimensions were selected and their roots were flared until 1.0 mm of dentin wall remained. Next, the roots were allocated into five groups (n=10): GI- cast metal post-and-core; GII- fiber posts plus accessory fiber posts; GIII- direct anatomic post; GIV- indirect anatomic post and GV- control (specimens without intraradicular post). A polyether impression material was used to simulate the periodontal ligament. After periodontal ligament simulation, the specimens were subjected to a compressive load at a crosshead speed of 0.5 mm/min in a servo-hydraulic testing machine (MTS 810) applied at 135 masculine to the long axis of the tooth until failure. The data (N) were subjected to ANOVA and Tukey's post-hoc test (alpha=0.05).

RESULTS

GI and GIV presented higher fracture strength (p<0.05) than GII. GIII presented intermediate values without statistically significant differences (p>0.05) from GI, GII and GIV. Control specimens (GV) produced the lowest fracture strength mean values (p<0.05). Despite obtaining the highest mean value, GI presented 100% of unfavorable failures. GII presented 20% of unfavorable failures. GIII, GIV and GV presented only favorable failures.

CONCLUSIONS

Although further in vitro and in vivo studies are necessary, the results of this study showed that the use of direct and indirect anatomic posts in flared roots could be an alternative to cast metal post-and-core.

Links

PMC Free PDF
PMC Free Full Text
FREE Publisher Full Text

Authors+Show Affiliations

Clavijo VG
Department of Restorative Dentistry, São Paulo State University, Araraquara, SP, Brazil.
Reis JM
No affiliation info available
Kabbach W
No affiliation info available
Silva AL
No affiliation info available
Oliveira Junior OB
No affiliation info available
Andrade MF
No affiliation info available

MeSH

AnimalsCattleCementationChromium AlloysComposite ResinsDental MaterialsDental Prosthesis DesignDental Restoration FailureDental Stress AnalysisDentinGlassIncisorMaterials TestingModels, AnatomicPeriodontal LigamentPost and Core TechniqueResin CementsRoot Canal Filling MaterialsRoot Canal PreparationStress, MechanicalTooth FracturesTooth Root

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20027429

Citation

Clavijo, Victor Grover Rene, et al. "Fracture Strength of Flared Bovine Roots Restored With Different Intraradicular Posts." Journal of Applied Oral Science : Revista FOB, vol. 17, no. 6, 2009, pp. 574-8.
Clavijo VG, Reis JM, Kabbach W, et al. Fracture strength of flared bovine roots restored with different intraradicular posts. J Appl Oral Sci. 2009;17(6):574-8.
Clavijo, V. G., Reis, J. M., Kabbach, W., Silva, A. L., Oliveira Junior, O. B., & Andrade, M. F. (2009). Fracture strength of flared bovine roots restored with different intraradicular posts. Journal of Applied Oral Science : Revista FOB, 17(6), 574-8.
Clavijo VG, et al. Fracture Strength of Flared Bovine Roots Restored With Different Intraradicular Posts. J Appl Oral Sci. 2009 Nov-Dec;17(6):574-8. PubMed PMID: 20027429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture strength of flared bovine roots restored with different intraradicular posts. AU - Clavijo,Victor Grover Rene, AU - Reis,José Maurício dos Santos Nunes, AU - Kabbach,William, AU - Silva,André Luis Faria e, AU - Oliveira Junior,Osmir Batista de, AU - Andrade,Marcelo Ferrarezi de, PY - 2008/08/19/received PY - 2009/07/21/accepted PY - 2009/12/23/entrez PY - 2009/12/23/pubmed PY - 2010/3/24/medline SP - 574 EP - 8 JF - Journal of applied oral science : revista FOB JO - J Appl Oral Sci VL - 17 IS - 6 N2 - OBJECTIVE: The aim of this study was to evaluate the fracture strength and failure mode of flared bovine roots restored with different intraradicular posts. MATERIAL AND METHODS: Fifty bovine incisors with similar dimensions were selected and their roots were flared until 1.0 mm of dentin wall remained. Next, the roots were allocated into five groups (n=10): GI- cast metal post-and-core; GII- fiber posts plus accessory fiber posts; GIII- direct anatomic post; GIV- indirect anatomic post and GV- control (specimens without intraradicular post). A polyether impression material was used to simulate the periodontal ligament. After periodontal ligament simulation, the specimens were subjected to a compressive load at a crosshead speed of 0.5 mm/min in a servo-hydraulic testing machine (MTS 810) applied at 135 masculine to the long axis of the tooth until failure. The data (N) were subjected to ANOVA and Tukey's post-hoc test (alpha=0.05). RESULTS: GI and GIV presented higher fracture strength (p<0.05) than GII. GIII presented intermediate values without statistically significant differences (p>0.05) from GI, GII and GIV. Control specimens (GV) produced the lowest fracture strength mean values (p<0.05). Despite obtaining the highest mean value, GI presented 100% of unfavorable failures. GII presented 20% of unfavorable failures. GIII, GIV and GV presented only favorable failures. CONCLUSIONS: Although further in vitro and in vivo studies are necessary, the results of this study showed that the use of direct and indirect anatomic posts in flared roots could be an alternative to cast metal post-and-core. SN - 1678-7765 UR - https://www.unboundmedicine.com/medline/citation/20027429/Fracture_strength_of_flared_bovine_roots_restored_with_different_intraradicular_posts_ L2 - https://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S1678-77572009000600007&amp;lng=en&amp;nrm=iso&amp;tlng=en DB - PRIME DP - Unbound Medicine ER -