Comparison of Dimensional Accuracy and Bond Strength of Combined Reversible – Irreversible Hydrocolloid Impression System with the Other Commonly Used Impression Materials – An In Vitro Study
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2019, Vol 2, Issue 1
Abstract
A dimensionally accurate impression is one of the primary determinants for a precise fitting indirect restoration. There are some factors that affect definitive impression quality such as tooth preparation design, soft tissue management, tray selection, impression material and impression technique.4,5 There are several elastic impression materials available for dental use: synthetic elastomeric materials, including polysulfide, condensation silicone, addition silicone and polyether; and hydrocolloids.6,7 All these materials are used for reproducing oral conditions in order to construct restorations.In the present in-vitro study an attempt to evaluate and compare the dimensional accuracy of the present day available agar syringeable products combined with alginates to that of the other impression materials which are used commonly in the dental clinics is done .Results showed that the tensile strength of the cartriloids with the conventional alginates available is low and not within the clinical limits of the specifically formulated alginate for the laminate technique, dimensional accuracy of the casts produced from all the agar alginate combinations when compared with that of the Addition Silicone was clinically insignificant.
Authors and Affiliations
Dr. Ajay Singh
Keywords
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