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Abstract
This study compared the breaking strengths of all-ceramic crowns constructed with
aluminous porcelain, the Cerestore system, and the Dicor system on an anterior tooth
preparation. Fifteen crowns from each group were constructed to comparable dimensions
on dies from the same master die. Ten crowns from the same group were cemented on
the master die and loaded until catastrophic failure. Five crowns from each group
were embedded and sectioned to examine internal adaptation. No significant difference
was found between the load necessary to produce failure in the aluminous porcelain
and Dicor crowns and the load needed to initiate crack formation in the Cerestore
crowns. However, seven of the 10 Cerestore crowns showed a two-phase failure pattern;
the difference between crack initiation and catastrophic failure was significant.
Within the limitation of this study, neither the Cerestore (high alumina core) nor
the Dicor (castable glass-ceramic) produced an all-ceramic crown superior to the current
aluminous porcelain crown.
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References
- The shrink-free ceramic crown.J Prosthet Dent. 1983; 49: 182-187
- The science of alumina ceramics in the art of restorative dentistry.Quintessence Dent Technol. 1982; 6: 769-775
- The strength and strengthening mechanisms of dental ceramics.in: McLean JW Dental ceramics. Proceeding, of the First International Symposium of Ceramics. Quintessence, Chicago1983: 117
- The reinforcement of dental porceiain with ceramic oxides.Br Dent J. 1965; 119: 251-265
- Faulty porcelain jacket crowns.Aust Dent J. 1982; 17: 436-440
- Introduction to ceramics.in: 2nd ed. John Wiley & Sons, New York1976: 809
- 2nd ed. The science and art of dental ceramics. vol I. Quintessence, Chicago1979: 40
- A comparative study of the strength of aluminous porcelain jacket crowns constructed with the conventional and twin foil techniques.J Prosthet Dent. 1982; 48: 271-281
- Compressive strengths of conventional, twin-foil, and an all-ceramic crown.J Prosthet Dent. 1984; 52: 215-220
- A compressive strength study of an all-ceramic crown.J Prosthet Dent. 1985; 53: 301-303
- The fit of Cerestore, twin-foil and conventional ceramic crowns [Abstract].J Dent Res. 1985; 64: 362
- Introduction to ceramics.in: 2nd ed. John Wiley & Sons, New York1976: 371
- Precise porcelain jacket crowns.Aust Dent J. 1972; 17: 269-273
- Method for matching dimensional characteristicss of die and impression materials [Abstract].J Dent Res. 1984; : 235
- Die materials: a comparison of properties.in: 3rd ed. Thesis. Indiana University, Indianapolis, Ind1986
- Evaluation of a new epoxy resin die material.J Prosthbt Dent. 1985; 54: 136-140
- “Shrink-free” ceramic crown system factors influencing the core margin fit.Quintessence Dent Technol. 1986; 10: 81-87
Article info
Footnotes
Supported in part by the Research and Education Foundation of Prosthodontics.
Identification
Copyright
© 1989 The C. V. Mosby Company. Published by Elsevier Inc.
