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ORIGINAL RESEARCH Table of Contents   
Year : 2013  |  Volume : 24  |  Issue : 4  |  Page : 446-450
Comparison of marginal accuracy of castings fabricated by conventional casting technique and accelerated casting technique: An in vitro study


1 Department of Prosthodontics, A.C.P.M. Dental College, Sakri Road, Dhule, Maharashtra, India
2 Department of Operative Dentistry and Endodontics, A.C.P.M. Dental College, Sakri Road, Dhule, Maharashtra, India

Correspondence Address:
S Srikanth Reddy
Department of Prosthodontics, A.C.P.M. Dental College, Sakri Road, Dhule, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9290.118390

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Background: Conventional casting technique is time consuming when compared to accelerated casting technique. In this study, marginal accuracy of castings fabricated using accelerated and conventional casting technique was compared. Materials and Methods: 20 wax patterns were fabricated and the marginal discrepancy between the die and patterns were measured using Optical stereomicroscope. Ten wax patterns were used for Conventional casting and the rest for Accelerated casting. A Nickel-Chromium alloy was used for the casting. The castings were measured for marginal discrepancies and compared. Results: Castings fabricated using Conventional casting technique showed less vertical marginal discrepancy than the castings fabricated by Accelerated casting technique. The values were statistically highly significant. Conclusion: Conventional casting technique produced better marginal accuracy when compared to Accelerated casting. The vertical marginal discrepancy produced by the Accelerated casting technique was well within the maximum clinical tolerance limits. Clinical Implication: Accelerated casting technique can be used to save lab time to fabricate clinical crowns with acceptable vertical marginal discrepancy.


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