Casting made simple using modified sprue design: An in vitro study.

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dc.contributor.authorBaskaran, B Eswaran
dc.contributor.authorPrabhu, K R Geetha
dc.contributor.authorPrabhu, R
dc.contributor.authorKrishna, G Phani
dc.contributor.authorEswaran, M A
dc.contributor.authorGajapathi, B
dc.date.accessioned2015-01-03T11:27:33Z
dc.date.available2015-01-03T11:27:33Z
dc.date.issued2014-05
dc.description.abstractBackground: Success in dental casting restorations for fixed partial dentures (FPDs) depends on the castability. Castability is described as the ability of an alloy to faithfully reproduce sharp detail and fine margins of a wax pattern. The goal of a prosthodontist is to provide the patient with restorations that fit precisely. Regardless of the alloy used for casting, the casting technique should yield a casted alloy, which should possess sufficient mass, surface hardness and minimal porosity after casting. Materials and Methods: Twenty patterns for casting were made from three‑dimensional printed resin pattern simulating a 3 unit FPD and casted using modified sprue technique. Later test samples were cemented sequentially on stainless steel model using pressure indicating paste and evaluated for vertical marginal gap in eight predetermined reference areas. Marginal gap were measured in microns using Video Measuring System (VMS2010F‑CIP Corporation, Korea). A portion of the axial wall of the cast abutments depicting premolar and molar were sectioned and embedded in acrylic resin and tested for micro hardness using Reichert Polyvar 2 Met Microhardness tester (Reichert, Austria) and porosity using Quantimet Image Analyzer (Quantimet Corporation London, England). Results: The results obtained for marginal gap, micro hardness, and porosity of all test samples were tabulated, descriptive statistics were calculated and the values were found to be within the clinically acceptable range. Conclusion: The new sprue technique can be an alternative and convenient method for casting which would minimize metal wasting and less time consuming. However, further studies with same technique on various parameters are to be conducted for its broad acceptance.en_US
dc.identifier.citationBaskaran B Eswaran, Prabhu K R Geetha, Prabhu R, Krishna G Phani, Eswaran M A, Gajapathi B. Casting made simple using modified sprue design: An in vitro study. Indian Journal of Dental Research. 2014 May-Jun; 25(3): 340-345.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/154583
dc.language.isoenen_US
dc.source.urihttps://www.ijdr.in/article.asp?issn=0970-9290;year=2014;volume=25;issue=3;spage=340;epage=345;aulast=Baskaranen_US
dc.subjectCobalt‑chromium alloyen_US
dc.subjectmarginal gapen_US
dc.subjectmicrohardnessen_US
dc.subjectmodified sprueen_US
dc.subjectporosityen_US
dc.subjectthree‑dimensional printed resin patternen_US
dc.subject.meshChromium Alloys --therapeutic use
dc.subject.meshDental Alloys
dc.subject.meshDental Casting Investment
dc.subject.meshDental Casting Techniques --instrumentation
dc.subject.meshEquipment Design
dc.subject.meshIn Vitro Techniques
dc.subject.meshSurface Properties
dc.titleCasting made simple using modified sprue design: An in vitro study.en_US
dc.typeArticleen_US
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