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Load fatigue of compromised teeth: a comparison of 3 luting cements.
Int J Prosthodont. 1998 Nov-Dec; 11(6):558-64.IJ

Abstract

PURPOSE

This study compared the number of cycles to failure of central incisors restored with full cast crowns and then cemented with 3 different luting cements.

MATERIALS AND METHODS

Fifteen human maxillary central incisors received cast post-and-core restorations. These were cemented with zinc phosphate. The teeth were then divided into 3 groups of 5 samples each. Each tooth had a ferrule length of 1.0 mm and was prepared for a full crown. A waxing jig was used to standardize the load application point on all waxed crowns. Complete cast crowns were cemented to the compromised teeth using 3 different luting cements: a zinc phosphate cement (control group), a resin-modified glass-ionomer cement, and a resin cement with a dentin bonding agent. A fatigue load of 1.5 kg was applied at a rate of 72 cycles per minute until failure of the cement layer occurred between the crown and the tooth (preliminary failure). The independent variable was the number of load cycles required to create preliminary failure. An electrical resistance strain gauge was used to provide evidence of preliminary failure.

RESULTS AND CONCLUSION

The resin cement samples had a significantly higher number of load cycles to preliminary failure than both the zinc phosphate and the resin-modified glass ionomer (P < or = 0.05). There was no significant difference between the zinc phosphate and the resin-modified glass-ionomer cements.

Authors+Show Affiliations

University of Washington, Seattle, USA.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

10023218

Citation

Junge, T, et al. "Load Fatigue of Compromised Teeth: a Comparison of 3 Luting Cements." The International Journal of Prosthodontics, vol. 11, no. 6, 1998, pp. 558-64.
Junge T, Nicholls JI, Phillips KM, et al. Load fatigue of compromised teeth: a comparison of 3 luting cements. Int J Prosthodont. 1998;11(6):558-64.
Junge, T., Nicholls, J. I., Phillips, K. M., & Libman, W. J. (1998). Load fatigue of compromised teeth: a comparison of 3 luting cements. The International Journal of Prosthodontics, 11(6), 558-64.
Junge T, et al. Load Fatigue of Compromised Teeth: a Comparison of 3 Luting Cements. Int J Prosthodont. 1998 Nov-Dec;11(6):558-64. PubMed PMID: 10023218.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Load fatigue of compromised teeth: a comparison of 3 luting cements. AU - Junge,T, AU - Nicholls,J I, AU - Phillips,K M, AU - Libman,W J, PY - 1999/2/19/pubmed PY - 1999/2/19/medline PY - 1999/2/19/entrez SP - 558 EP - 64 JF - The International journal of prosthodontics JO - Int J Prosthodont VL - 11 IS - 6 N2 - PURPOSE: This study compared the number of cycles to failure of central incisors restored with full cast crowns and then cemented with 3 different luting cements. MATERIALS AND METHODS: Fifteen human maxillary central incisors received cast post-and-core restorations. These were cemented with zinc phosphate. The teeth were then divided into 3 groups of 5 samples each. Each tooth had a ferrule length of 1.0 mm and was prepared for a full crown. A waxing jig was used to standardize the load application point on all waxed crowns. Complete cast crowns were cemented to the compromised teeth using 3 different luting cements: a zinc phosphate cement (control group), a resin-modified glass-ionomer cement, and a resin cement with a dentin bonding agent. A fatigue load of 1.5 kg was applied at a rate of 72 cycles per minute until failure of the cement layer occurred between the crown and the tooth (preliminary failure). The independent variable was the number of load cycles required to create preliminary failure. An electrical resistance strain gauge was used to provide evidence of preliminary failure. RESULTS AND CONCLUSION: The resin cement samples had a significantly higher number of load cycles to preliminary failure than both the zinc phosphate and the resin-modified glass ionomer (P < or = 0.05). There was no significant difference between the zinc phosphate and the resin-modified glass-ionomer cements. SN - 0893-2174 UR - https://www.unboundmedicine.com/medline/citation/10023218/Load_fatigue_of_compromised_teeth:_a_comparison_of_3_luting_cements_ DB - PRIME DP - Unbound Medicine ER -