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Fracture resistance of root filled molar teeth restored with glass fibre bundles.
Int Endod J. 2010 May; 43(5):356-62.IE

Abstract

AIM

To evaluate the effect of unidirectional or woven glass fibre tapes inserted into MOD cavity preparations on the fracture resistance of root filled molar teeth.

METHODOLOGY

Extracted human molar teeth were randomly divided into six groups (n = 15) : G1 - sound teeth, control; G2 - MOD cavity preparation; G3 - MOD + root canal treatment (Endo); G4 - MOD + Endo + composite resin restoration (Resin); G5 - MOD + Endo + unidirectional fibre (UF) + Resin; G6 - MOD + ;Endo + woven fibre (WF) + Resin. The teeth were subjected to a compressive fracture test in a universal testing machine. After testing, two failure modes were classified: pulp chamber floor or cusp.

RESULTS

The highest and the lowest mean fracture strengths were found in sound teeth (G1) (4960N) and MOD + root canal treatment (G3) (612.84N), respectively, with significant differences from the other groups (P < 0.05). The remaining groups had statistically similar means. In G5 and G6, there was a tendency for fracture to occur in the pulp chamber floor compromising tooth integrity.

CONCLUSIONS

The insertion of glass fibres into MOD cavity preparations and restoring them with composite resin was not different than molar teeth filled with composite resin only in terms of fracture resistance. Fibres placed into MOD cavities do not reinforce teeth.

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Authors+Show Affiliations

Rodrigues FB
Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
Paranhos MP
No affiliation info available
Spohr AM
No affiliation info available
Oshima HM
No affiliation info available
Carlini B
No affiliation info available
Burnett LH
No affiliation info available

MeSH

Acid Etching, DentalBisphenol A-Glycidyl MethacrylateComposite ResinsCompressive StrengthDental Cavity PreparationDental EnamelDental MaterialsDental Pulp CavityDental Restoration, PermanentDental Stress AnalysisGlassGlass Ionomer CementsGutta-PerchaHumansMaleatesMaterials TestingMolarRoot Canal Filling MaterialsRoot Canal TherapyStress, MechanicalTooth FracturesTooth, Nonvital

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

20518927

Citation

Rodrigues, F B., et al. "Fracture Resistance of Root Filled Molar Teeth Restored With Glass Fibre Bundles." International Endodontic Journal, vol. 43, no. 5, 2010, pp. 356-62.
Rodrigues FB, Paranhos MP, Spohr AM, et al. Fracture resistance of root filled molar teeth restored with glass fibre bundles. Int Endod J. 2010;43(5):356-62.
Rodrigues, F. B., Paranhos, M. P., Spohr, A. M., Oshima, H. M., Carlini, B., & Burnett, L. H. (2010). Fracture resistance of root filled molar teeth restored with glass fibre bundles. International Endodontic Journal, 43(5), 356-62. https://doi.org/10.1111/j.1365-2591.2009.01666.x
Rodrigues FB, et al. Fracture Resistance of Root Filled Molar Teeth Restored With Glass Fibre Bundles. Int Endod J. 2010;43(5):356-62. PubMed PMID: 20518927.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture resistance of root filled molar teeth restored with glass fibre bundles. AU - Rodrigues,F B, AU - Paranhos,M P G, AU - Spohr,A M, AU - Oshima,H M S, AU - Carlini,B, AU - Burnett,L H,Jr PY - 2010/6/4/entrez PY - 2010/6/4/pubmed PY - 2010/9/30/medline SP - 356 EP - 62 JF - International endodontic journal JO - Int Endod J VL - 43 IS - 5 N2 - AIM: To evaluate the effect of unidirectional or woven glass fibre tapes inserted into MOD cavity preparations on the fracture resistance of root filled molar teeth. METHODOLOGY: Extracted human molar teeth were randomly divided into six groups (n = 15) : G1 - sound teeth, control; G2 - MOD cavity preparation; G3 - MOD + root canal treatment (Endo); G4 - MOD + Endo + composite resin restoration (Resin); G5 - MOD + Endo + unidirectional fibre (UF) + Resin; G6 - MOD + ;Endo + woven fibre (WF) + Resin. The teeth were subjected to a compressive fracture test in a universal testing machine. After testing, two failure modes were classified: pulp chamber floor or cusp. RESULTS: The highest and the lowest mean fracture strengths were found in sound teeth (G1) (4960N) and MOD + root canal treatment (G3) (612.84N), respectively, with significant differences from the other groups (P < 0.05). The remaining groups had statistically similar means. In G5 and G6, there was a tendency for fracture to occur in the pulp chamber floor compromising tooth integrity. CONCLUSIONS: The insertion of glass fibres into MOD cavity preparations and restoring them with composite resin was not different than molar teeth filled with composite resin only in terms of fracture resistance. Fibres placed into MOD cavities do not reinforce teeth. SN - 1365-2591 UR - https://www.unboundmedicine.com/medline/citation/20518927/Fracture_resistance_of_root_filled_molar_teeth_restored_with_glass_fibre_bundles_ L2 - https://doi.org/10.1111/j.1365-2591.2009.01666.x DB - PRIME DP - Unbound Medicine ER -