Ahmad Shahin, Ahed Al-Wahadni

Veneering Techniques and Materials of Zirconia Based Restorations

Veneering Techniques of Zirconia

• Broschiertes Buch

Produktbeschreibung

Aim: The aim of this investigation was to examine the effects of the veneering technique on the fracture resistance, failure pattern, and shade reproducibility of zirconia based crowns. Materials and methods: A prepared tooth was scanned using CAD/CAM technology to fabricate 45 cobalt chromium (CoCr) testing dies. Forty five zirconia copings of 0.5mm uniform thickness were milled and devided according to the veneering technique into 3 groups: layering veneering (LV), overpressing veneering (OV), and digital veneering (DV). A spectrophotometer was used to measure the shade coordinates of an A2 shade tab, as well as the shade coordinates for each specimen. Both the CIE Lab (¿Eab) and the CIE DE2000 (¿E00) color difference formulas were applied to compare between the shade tab and the study groups . Afterwards, the specimens were thermo-cycled then statically loaded until failure. Failed crowns were inspected and failure patterns were identified. One way ANOVA and multiple comparison bonferroni tests were applied for statistical analysis of the results. Conclusion: LV was superior to other groups in terms of shade reproducibility and fracture resistance.

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Produktdetails

• Verlag: Noor Publishing
• Seitenzahl: 136
• Erscheinungstermin: 30. Januar 2017
• Arabisch
• Abmessung: 220mm x 150mm x 9mm
• Gewicht: 221g
• ISBN-13: 9783330842847
• ISBN-10: 3330842849
• Artikelnr.: 47696002

Autorenporträt

Ahmad Shahin is a specialist in fixed and removable prosthodontics. He holds an MClinDent Prosthodontics Degree. Between your hands is his Master¿s Degree thesis which presents valuable information regarding some of the latest technologies in the dental field. The results of this thesis were also published in the Journal of Prosthodontics.