Evaluation of the effects of thermal changes on the bond strength between zirconia framework and veneering ceramic during the firing process

Yeşim Ölçer Us; Betül Tuncelli

Makale detayları

Evaluation of the effects of thermal changes on the bond strength between zirconia framework and veneering ceramic during the firing process

Yazarlar:

Yeşim Ölçer Us | Betül Tuncelli

Yayıncı:

Istanbul University

Ana Başlıklar:

Dentistry

Dergi:

European Oral Research Vol.57 Issue 2, pp.108-114

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001292013

pISSN:

2630-6158

Anahtar kelimeler:

Özet:

 Purpose The aim of this in-vitro study was to evaluate the effect of thermal changes to shear bond strength during the firing process of veneering porcelain on a zirconia framework. Materials and Methods Single yttria-stabilized tetragonal zirconia polycrystal Y-TZP framework ceramic Kavo Dental GmbH and three different types of veneering ceramics IPS e.max Ceram, Vita VM9, and GC Initial Zr-FS were used. One-hundred-twenty standard disc-shaped samples were prepared from zirconia blocks by using a CADCAM system Kavo Everest. Four different cooling processes maximum, 25Cmin, 50Cmin and 75Cmin were applied to the veneering ceramics and the shear bond strength SBS test was performed. Ceramic surfaces were investigated by using scanning electron microscopeic SEM. The possible occurrence of a tm transformation of zirconia was evaluated by X-Ray Diffraction XRD. Two-way analysis of variance, Bonferroni correction and paired comparisons were used for statistical analysis. Results The main effects of veneering ceramics on shear bond strength were found to be significant p0.042. The mean shear bond strength values differ according to the cooling process p0.001. The monoclinic phase ratio increased in groups with fast cooling process. Conclusion The thermal changes during the firing process of veneering porcelain on a zirconia framework influenced the shear bond strength of the all-ceramic bilayered system. A slow cooling process provided higher strength for bilayer ceramic samples.

 Purpose The aim of this in-vitro study was to evaluate the effect of thermal changes to shear bond strength during the firing process of veneering porcelain on a zirconia framework. Materials and Methods Single yttria-stabilized tetragonal zirconia polycrystal Y-TZP framework ceramic Kavo Dental GmbH and three different types of veneering ceramics IPS e.max Ceram, Vita VM9, and GC Initial Zr-FS were used. One-hundred-twenty standard disc-shaped samples were prepared from zirconia blocks by using a CADCAM system Kavo Everest. Four different cooling processes maximum, 25Cmin, 50Cmin and 75Cmin were applied to the veneering ceramics and the shear bond strength SBS test was performed. Ceramic surfaces were investigated by using scanning electron microscopeic SEM. The possible occurrence of a tm transformation of zirconia was evaluated by X-Ray Diffraction XRD. Two-way analysis of variance, Bonferroni correction and paired comparisons were used for statistical analysis. Results The main effects of veneering ceramics on shear bond strength were found to be significant p0.042. The mean shear bond strength values differ according to the cooling process p0.001. The monoclinic phase ratio increased in groups with fast cooling process. Conclusion The thermal changes during the firing process of veneering porcelain on a zirconia framework influenced the shear bond strength of the all-ceramic bilayered system. A slow cooling process provided higher strength for bilayer ceramic samples.

 Purpose The aim of this in-vitro study was to evaluate the effect of thermal changes to shear bond strength during the firing process of veneering porcelain on a zirconia framework. Materials and Methods Single yttria-stabilized tetragonal zirconia polycrystal Y-TZP framework ceramic Kavo Dental GmbH and three different types of veneering ceramics IPS e.max Ceram, Vita VM9, and GC Initial Zr-FS were used. One-hundred-twenty standard disc-shaped samples were prepared from zirconia blocks by using a CADCAM system Kavo Everest. Four different cooling processes maximum, 25Cmin, 50Cmin and 75Cmin were applied to the veneering ceramics and the shear bond strength SBS test was performed. Ceramic surfaces were investigated by using scanning electron microscopeic SEM. The possible occurrence of a tm transformation of zirconia was evaluated by X-Ray Diffraction XRD. Two-way analysis of variance, Bonferroni correction and paired comparisons were used for statistical analysis. Results The main effects of veneering ceramics on shear bond strength were found to be significant p0.042. The mean shear bond strength values differ according to the cooling process p0.001. The monoclinic phase ratio increased in groups with fast cooling process. Conclusion The thermal changes during the firing process of veneering porcelain on a zirconia framework influenced the shear bond strength of the all-ceramic bilayered system. A slow cooling process provided higher strength for bilayer ceramic samples.

 Purpose The aim of this in-vitro study was to evaluate the effect of thermal changes to shear bond strength during the firing process of veneering porcelain on a zirconia framework. Materials and Methods Single yttria-stabilized tetragonal zirconia polycrystal Y-TZP framework ceramic Kavo Dental GmbH and three different types of veneering ceramics IPS e.max Ceram, Vita VM9, and GC Initial Zr-FS were used. One-hundred-twenty standard disc-shaped samples were prepared from zirconia blocks by using a CADCAM system Kavo Everest. Four different cooling processes maximum, 25Cmin, 50Cmin and 75Cmin were applied to the veneering ceramics and the shear bond strength SBS test was performed. Ceramic surfaces were investigated by using scanning electron microscopeic SEM. The possible occurrence of a tm transformation of zirconia was evaluated by X-Ray Diffraction XRD. Two-way analysis of variance, Bonferroni correction and paired comparisons were used for statistical analysis. Results The main effects of veneering ceramics on shear bond strength were found to be significant p0.042. The mean shear bond strength values differ according to the cooling process p0.001. The monoclinic phase ratio increased in groups with fast cooling process. Conclusion The thermal changes during the firing process of veneering porcelain on a zirconia framework influenced the shear bond strength of the all-ceramic bilayered system. A slow cooling process provided higher strength for bilayer ceramic samples.

Makale detayları

Evaluation of the effects of thermal changes on the bond strength between zirconia framework and veneering ceramic during the firing process

Yazarlar:

Yeşim Ölçer Us | Betül Tuncelli

Yayıncı:

Istanbul University

Ana Başlıklar:

Dentistry

Dergi:

European Oral Research Vol.57 Issue 2, pp.108-114

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001292013

pISSN:

2630-6158

Zirconia

Veneering ceramic

CAD/CAM

Bond strength

Cooling process

Sayı

Makale detayları

Evaluation of the effects of thermal changes on the bond strength between zirconia framework and veneering ceramic during the firing process

Yazarlar: Yeşim Ölçer Us | Betül Tuncelli

Yayıncı: Istanbul University

Ana Başlıklar: Dentistry

Dergi: European Oral Research Vol.57 Issue 2, pp.108-114

Belge Tipi: Makale

Yayın Tarihi: 5/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001292013

pISSN: 2630-6158

Zirconia

Veneering ceramic

CAD/CAM

Bond strength

Cooling process

Sayı

Yazarlar:

Yeşim Ölçer Us | Betül Tuncelli

Yayıncı:

Istanbul University

Ana Başlıklar:

Dentistry

Dergi:

European Oral Research Vol.57 Issue 2, pp.108-114

Belge Tipi:

Makale

Yayın Tarihi:

5/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001292013

pISSN:

2630-6158