alexa Abstract | Evaluation of Influence of Thermocycling on Shear Bond Strength of Two Different Zirconia Systems Bonded to Dentin Using Resin Cements - An In Vitro Study
ISSN: 2247-2452

Oral Health and Dental Management
Open Access

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Research Article Open Access

Abstract

Objectives: Information about the retentive strength of luting agents for zirconium oxide–based crowns is limited. The purpose was to determine the ability of selected luting agents to retain a representative zirconium oxide ceramic crown under clinically simulated conditions. Methods: 56 sound freshly extracted first permanent molars were selected. Teeth were divided randomly into two groups based on the type of zirconia system used. Each group was further subdivided based on the type of resin cement used and each subgroup was further subdivided into two halves based on thermocycling. Shear bond strength was measured using Universal Testing Machine and then the samples were observed under magnification (80X) using a Stereomicroscope to identify the nature of bond failure. Student t test was applied on the data obtained. The log transformation, if required, was applied to normalize the data and p > 0.05 was considered significant. Results : Mean bond strength of Panavia F2.0 with Cercon before and after thermocycling was 9.45 Mpa, 13.45 Mpa and With Ziecon was 9.59 Mpa and 12.37 Mpa respectively. Mean bond strength of Rely X U200 with Cercon before and after thermocycling was 8.10Mpa and 11.81Mpa and with Ziecon was 8.12 Mpa and 10.63Mpa respectively. Significance: Panavia F2.0 was found to be better presented highly significant results than Rely X U200 with both Zirconia Systems. Thermocycling significantaly affects the bond strength of both the resin cements with dentin. There was no significant difference was observed between shear bond strength of two zirconia systems. Highlights: • This study revealed that the type and composition of Zirconia systems does not affect the shear bond strength of Zirconia todentin. • Composition, type of resin cement, and oral conditions affect the bond strength of Zirconia to dentin.

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Author(s): Manbir Singh, Sharad Gupta, Abhishek Nagpal, Akshay Bhargava, Hari Parkash, Megha Sethi

Keywords

Prosthodontics

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