The influence of clinically induced variability on the bi-axial fracture strength of cemented aluminous core porcelain discs

摘要

Objectives: Zinc phosphate cements are supplied in powder/liquid from so thata range of mixing ratios are naturally generated in clinical practice. However, these cements are known to have a deleterious effect on dental ceramics and the impact of variations in cement mixing on the strength of dental porcelain was investigated in the present study. Methods: Vitadur-N core Porcelain was fabricated into discs 915 mm diameter and 2 mm thickness), zinc phosphate cements of different Mixing ratios were applied to the discs to produce a luting cement thickness and the samples were stored for 24 h prior to testing in water- Bath at 37 ± 1 deg. C.