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Effect of core material and restoration design on strength of endodontically treated bovine teeth: a laboratory study.
J Prosthodont. 2008 Aug; 17(6):456-61.JP

Abstract

PURPOSE

The purpose of this study was to evaluate the fracture resistance of bovine teeth restored with one-piece cast core/crowns and no ferrule, compared to teeth restored with amalgam cores and full coverage crowns, with and without a dentine ferrule.

MATERIALS AND METHOD

Thirty bovine incisors were selected and modified to ensure all teeth had axial dentine walls of similar size. The teeth were then randomly allocated to one of the three groups: control group restored with amalgam core and cast crown without ferrule; ferrule group restored with amalgam core and cast crown with a 2-mm dentine ferrule; one-piece group restored with one-piece cast core/crown without ferrule. Each tooth was loaded to the point of fracture.

RESULTS

The mean load resisted by the control group, the ferrule group, and the one-piece group were 1092.5, 1843.5, and 1463.1 N, respectively. The mean load resisted by the ferrule group was significantly greater than the control group (p < 0.001) and the one-piece cast core/crown group (p= 0.04). The mean load resisted by the one-piece cast core/crown group was significantly greater than the control group (p= 0.04).

CONCLUSIONS

The maximum load resistance was significantly enhanced by a 2-mm ferrule compared with teeth with no ferrule and teeth restored with one-piece cast core/crowns. Teeth restored with one-piece cast core/crowns were significantly more resistant to loading than teeth restored with amalgam cores and crowns without a ferrule.

Authors+Show Affiliations

School of Dental Science, University of Melbourne, Victoria, Australia.No affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18544133

Citation

Hinckfuss, Simon, and Peter R. Wilson. "Effect of Core Material and Restoration Design On Strength of Endodontically Treated Bovine Teeth: a Laboratory Study." Journal of Prosthodontics : Official Journal of the American College of Prosthodontists, vol. 17, no. 6, 2008, pp. 456-61.
Hinckfuss S, Wilson PR. Effect of core material and restoration design on strength of endodontically treated bovine teeth: a laboratory study. J Prosthodont. 2008;17(6):456-61.
Hinckfuss, S., & Wilson, P. R. (2008). Effect of core material and restoration design on strength of endodontically treated bovine teeth: a laboratory study. Journal of Prosthodontics : Official Journal of the American College of Prosthodontists, 17(6), 456-61. https://doi.org/10.1111/j.1532-849X.2008.00324.x
Hinckfuss S, Wilson PR. Effect of Core Material and Restoration Design On Strength of Endodontically Treated Bovine Teeth: a Laboratory Study. J Prosthodont. 2008;17(6):456-61. PubMed PMID: 18544133.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of core material and restoration design on strength of endodontically treated bovine teeth: a laboratory study. AU - Hinckfuss,Simon, AU - Wilson,Peter R, Y1 - 2008/06/09/ PY - 2008/6/12/pubmed PY - 2008/12/17/medline PY - 2008/6/12/entrez SP - 456 EP - 61 JF - Journal of prosthodontics : official journal of the American College of Prosthodontists JO - J Prosthodont VL - 17 IS - 6 N2 - PURPOSE: The purpose of this study was to evaluate the fracture resistance of bovine teeth restored with one-piece cast core/crowns and no ferrule, compared to teeth restored with amalgam cores and full coverage crowns, with and without a dentine ferrule. MATERIALS AND METHOD: Thirty bovine incisors were selected and modified to ensure all teeth had axial dentine walls of similar size. The teeth were then randomly allocated to one of the three groups: control group restored with amalgam core and cast crown without ferrule; ferrule group restored with amalgam core and cast crown with a 2-mm dentine ferrule; one-piece group restored with one-piece cast core/crown without ferrule. Each tooth was loaded to the point of fracture. RESULTS: The mean load resisted by the control group, the ferrule group, and the one-piece group were 1092.5, 1843.5, and 1463.1 N, respectively. The mean load resisted by the ferrule group was significantly greater than the control group (p < 0.001) and the one-piece cast core/crown group (p= 0.04). The mean load resisted by the one-piece cast core/crown group was significantly greater than the control group (p= 0.04). CONCLUSIONS: The maximum load resistance was significantly enhanced by a 2-mm ferrule compared with teeth with no ferrule and teeth restored with one-piece cast core/crowns. Teeth restored with one-piece cast core/crowns were significantly more resistant to loading than teeth restored with amalgam cores and crowns without a ferrule. SN - 1532-849X UR - https://www.unboundmedicine.com/medline/citation/18544133/Effect_of_core_material_and_restoration_design_on_strength_of_endodontically_treated_bovine_teeth:_a_laboratory_study_ L2 - https://doi.org/10.1111/j.1532-849X.2008.00324.x DB - PRIME DP - Unbound Medicine ER -