Evaluation of load at fracture of Procera AllCeram copings using different luting cements.

Autor: Al-Makramani BMA; Postgraduate Student, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaHead, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaDean, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Teknologi MARA, Shah Alam, Malaysia., Razak AAA; Postgraduate Student, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaHead, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaDean, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Teknologi MARA, Shah Alam, Malaysia., Abu-Hassan MI; Postgraduate Student, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaHead, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaDean, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Teknologi MARA, Shah Alam, Malaysia.
Jazyk: angličtina
Zdroj: Journal of prosthodontics : official journal of the American College of Prosthodontists [J Prosthodont] 2008 Feb; Vol. 17 (2), pp. 120-124. Date of Electronic Publication: 2007 Nov 28.
DOI: 10.1111/j.1532-849X.2007.00270.x
Abstrakt: Purpose: The current study investigated the effect of different luting agents on the fracture resistance of Procera AllCeram copings.
Methods: Six master dies were duplicated from the prepared maxillary first premolar tooth using nonprecious metal alloy (Wiron 99). Thirty copings (Procera AllCeram) of 0.6-mm thickness were manufactured. Three types of luting media were used: zinc phosphate cement (Elite), glass ionomer cement (Fuji I), and dual-cured composite resin cement (Panavia F). Ten copings were cemented with each type. Two master dies were used for each group, and each of them was used to lute five copings. All groups were cemented according to manufacturer's instructions and received a static load of 5 kg during cementation. After 24 hours of distilled water storage at 37 degrees C, the copings were vertically compressed using a universal testing machine at a crosshead speed of 1 mm/min.
Results: ANOVA revealed significant differences in the load at fracture among the three groups (p < 0.001). The fracture strength results showed that the mean fracture strength of zinc phosphate cement (Elite), glass ionomer cement (Fuji I), and resin luting cement (Panavia F) were 1091.9 N, 784.8 N, and 1953.5 N, respectively.
Conclusion: Different luting agents have an influence on the fracture resistance of Procera AllCeram copings.
Databáze: MEDLINE
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