Effect of Veneering Techniques on Shear and Microtensile Bond Strengths of Zirconia-Based All-Ceramic Systems
Küçük Resim Yok
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
QUINTESSENCE PUBLISHING CO INC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Purpose: To evaluate shear (SBS) and microtensile (mu TBS) bond strengths of zirconia cores veneered using different fabrication techniques. Materials and Methods: Seventy-five IPS e.max ZirCAD plates were fabricated and divided into three groups according to the following veneering techniques: layering, pressing, and CAD-on. The specimens of the layering group were veneered with IPS e.max Ceram, and the specimens of the pressing group were veneered with IPS e. max Zir-Press. Veneering ceramics in the CAD-on group were milled from IPS e.max CAD, fused with the core by using a glass-fusion ceramic, and then crystallized. Bond strength tests were performed using a universal testing machine at a crosshead speed of 0.5 mm/min for the SBS test and 1 mm/min for the mu TBS test. Mean SBS and mu TBS (MPa) were analyzed with one-way ANOVA and Tukey's HSD test (p < 0.05). Results: Significant differences in SBS were observed between the groups (p < 0.05). The mean SBS for the CAD-on group was significantly higher (31.89 +/- 5.83 MPa) than those of the layering (14.27 +/- 4.45 MPa) and pressing (12.23 +/- 3.04 MPa) groups. However, the mean mu TBS of the CAD-on (30.41 +/- 8.64 MPa), layering (21.71 +/- 3.40 MPa) and pressing (20.74 +/- 6.36 MPa) groups were not statistically significant (p > 0.05). Conclusion: The CAD-on technique showed the highest shear bond strengths of the tested groups, and most of the specimens failed cohesively instead of failing at the adhesive interface.
Açıklama
Anahtar Kelimeler
zirconia, veneering techniques, CAD-on, all-ceramics, bond strength
Kaynak
JOURNAL OF ADHESIVE DENTISTRY
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
19
Sayı
6
