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:: Volume 26, Issue 3 (7-2014) ::
J Iran Dent Assoc 2014, 26(3): 170-176 Back to browse issues page
Comparison of the Effect of Feldspathic Porcelain and Zirconia on Natural Tooth Wear
Asadollah Ahmadzadeh1 , Alireza Hashemi Ashtiani1 , Saeid Epakchi * 2, Mehdi Pormehdi3 , Ammar Neshati4 , Farnoosh Golmohamadi5 , Najmeh Mousavi6
1- Assistant Professor, Department of Prosthodontics, School of Dentistry, Ahwaz University of Medical Sciences. Ahwaz, Iran
2- Postgraduate student, Department of Prosthodontics, School of Dentistry, Ahwaz University of Medical Sciences. Ahwaz, Iran , saied_epakchi@yahoo.com
3- Assistant Professor, Department of Epidmiology, School of Medicine, Ahwaz University of Medical Sciences. Ahwaz, Iran
4- Assistant Professor, Department of Prosthodontics, School of Dentistry, Army University of Medical Sciences. Ahwaz, Iran
5- Postgraduate student, Department of Prosthodontics, School of Dentistry, Ahwaz University of Medical Sciences. Ahwaz, Iran
6- Assistant Professor, Department of Prosthodontics, School of Dentistry, Ghazvin University of Medical Sciences. Ghazvin, Iran
Abstract:   (8368 Views)

  Background and Aim : Enamel wear is among the main disadvantages of ceramic restorations. Recently, use of full zirconia crowns without dental porcelain has been suggested. The aim of this study was to compare the effect of feldspathic porcelain and zirconia on the wear of natural teeth .

  Materials and Methods : In this experimental study, 22 zirconia specimens were fabricated out of which, 11 specimens were polished and chosen as zirconia specimens while the remaining 11 were used to fabricate porcelain specimens. A total of 22 natural human teeth were also obtained. The natural teeth were photographed by a stereomicroscope in a fixed position and the distance from the cusp tip to a reference point was measured. Next, 11 teeth opposed zirconia and the remaining 11 opposed porcelain specimens in a chewing simulator and subjected to 120,000 masticatory cycles. The teeth were photographed again and the greatest difference between the before and after values ​​ was recorded .

  Results : The mean (± standard deviation) wear rate was 153.8±95.68 and 306.3±127.74, in the zirconia and porcelain groups, respectively and the two groups had a statistically significant difference in this respect (p=0.007 ).

  Conclusion : The mean wear was significantly lower in teeth opposing zirconia than in those opposing feldspathic porcelain .
Keywords: Natural tooth wear, Feldspathic porcelain, Zirconia
Full-Text [PDF 479 kb]   (4741 Downloads)    
Type of Study: Original | Subject: Prosthodontics
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Ahmadzadeh A, Hashemi Ashtiani A, Epakchi S, Pormehdi M, Neshati A, Golmohamadi F et al . Comparison of the Effect of Feldspathic Porcelain and Zirconia on Natural Tooth Wear. J Iran Dent Assoc 2014; 26 (3) :170-176
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Volume 26, Issue 3 (7-2014) Back to browse issues page
Journal of Iranian Dental Association

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