An In-Vitro Comparison of Post Space Impression using Two Different Technique with Polyvinylsiloxane and Vinyl Siloxane Ether Impression Material
Main Article Content
Abstract
Purpose: To identify the best impression material and technique for completeness and voids free post space impression.
Materials and method: 5 extracted maxillary central incisors mounted on acrylic block used and modified by biomechanical preparation of root canal and filled with gutta purcha. Post space was prepared and impression were made using Polyvinylsiloxane and Vinyl Siloxane Ether using two different technique. Technique 1 performed only with anesthetic needle and 23 gauge orthodontic wire, whereas technique 2 performed with additional use of lenturospiral. Data were collected and statistical analysis were done to identify best technique and material for completeness and voids free post space impression.
Results: There was statistical difference between technique 1 and 2 with Polyvinylsiloxane material [Group A = 68%, Group B = 88%] and no difference in both techniques while making impression with Vinyl Siloxane Ether material[Group B,D= 96%]. Maximum voids in post space impression were found in polyvinyl siloxane impression material using technique 1 [mean: 2.424] and least voids found in technique of impression making using Vinyl Siloxane Ether material [mean: 0.52]
Conclusion: Impression made with Vinyl Siloxane Ether impression material, with anesthetic needle, lenturospiral and 23 gauge orthodontic wire, is considered to be the better of Polyvinylsiloxane impression material.
Article Details
References
Sokol DJ. Effective use of current core and post concepts. J Prosthet Dent. 1984 Aug 1;52(2):231-4.
Perel ML, Muroff FI. Clinical criteria for posts and cores. J Prosthet Dent. 1972 Oct 1;28(4):405-11.
Robbins JW. Restoration of the endodontically treated tooth. Dent Clin North Am. 2002 Apr 1;46(2):367-84.
Chee WW, Cho GC, Marzola R. An in vitro comparison of 5 Techniques for impressing dowel space preparations. J Prosthodont. 2000 Mar;9(1):19-22.
Rayyan MR, Aldossari RA, Alsadun SF, Hijazy FR. Accuracy of Cast posts fabricated by the direct and the indirect techniques. J Prosthet Dent. 2016 Sep;116(3):411-5.
SCHWARTZ R, ROBBINS J. Post Placement and Restoration of Endodontically Treated Teeth: A Literature Review. J Endod. 2004 May;30(5):289-301.
Trebilcock CE, Evans DB. A two-stage impression technique for The indirect fabrication of multiple cast dowel and cores. J Prosthet Dent. 1991 Oct;66(4):422-5.
Lacy AM, Fukui H, Bellman T, Jendresen MD. Time-dependent Accuracy of elastomer impression materials. Part II: Polyether, Polysulfides, and polyvinylsiloxane. J Prosthet Dent. 1981 Mar;45(3):329-33.
German MJ, Carrick TE, McCabe JF. Surface detail reproduction of Elastomeric impression materials related to rheological properties. Dent Mater. 2008 Jul 1;24(7):951-6.
Lu H, Nguyen B, Powers JM. Mechanical properties of 3 Hydrophilic addition silicone and polyether elastomeric impression Materials. J Prosthet Dent. 2004 Aug;92(2):151-4.
Stober T, Johnson GH, Schmitter M. Accuracy of the newly Formulated vinyl siloxanether elastomeric impression material. J Prosthet Dent. 2010 Apr;103(4):228-39.
Nassar U, Oko A, Adeeb S, El-Rich M, Flores-Mir C. An in vitro Study on the dimensional stability of a vinyl polyether silicone Impression material over a prolonged storage period. J Prosthet Dent. 2013 Mar;109(3):172-8.
Williams C, Kumar M, Bajpai M, Agarwal D. Prosthodontic Management of Endodontically Treated Teeth: A Literature Review. Int J Clin Prev Dent. 2014 Mar 30;1(1):45-6
Stern N, Hirshfeld Z. Principles of preparing endodontically treated Teeth for dowel and core restorations. J Prosthet Dent. 1973 Aug;30(2):162-5.
DeSort KD. The prosthodontic use of endodontically treated teeth: Theory and biomechanics of post preparation. J Prosthet Dent. 1983 Feb;49(2):203-6.
Goerig AC, Mueninghoff LA. Management of the endodontically Treated tooth. Part II: Technique. J Prosthet Dent. 1983 Apr;49(4):491-7.
Chan RW, Bryant RW. Post-core foundations for endodontically Treated posterior teeth. J Prosthet Dent. 1982 Oct;48(4):401-6.
Dilts WE, Welk DA, Stovall J. Retentive properties of pin materials In pin-retained silver amalgam restorations. J Am Dent Assoc. 1968 Nov;77(5).
Trebilcock CE, Evans DB. A two-stage impression technique for The indirect fabrication of multiple cast dowel and cores. J Prosthet Dent. 1991 Oct;66(4):422-5.
20.Hofstede TM, Ercoli C. An indirect technique for fabrication of a Post and core wax pattern. J Prosthet Dent. 2002 Mar 1:87(3):341-2.
Rosen H. Operative procedures on mutilated endodontically treated Teeth. J Prosthet Dent. 1961 Sep 1;11(5):973-86.
Sabbak SA. Indirect fabrication of multiple post-and-core patterns With a vinyl polysiloxane matrix. J Prosthet Dent. 2002 Nov;88(5):555-7.
Pitigoi-Aron G, Streacker AB, Schulze KA, Geissberger M. Accuracy of cast posts and cores using a new investigative method. Gen Dent. 60(3):e153-7.
Mishra N, Shah DS, Shah RJ. Journal of Indian Prosthodontic Society. Vol. 9, The Journal of Indian Prosthodontic Society. 2009. 219 p
Dipti Shah, Kalpesh Vaishnav, Pankaj Patel, Aneri Patel, Shivanee Patel, Bharavi Desai, Modified Post Space Impression Technique to Edge on Prevailing Best Technique: In Vitro Study. J Res Adv Dent 2018;7(3):13-20.
Shetty RM, Bhandari GR, Mehta D. Elastomeric Impression Material. World J Dent. 2014;5(2):134-7.
Stober T, Johnson GH, Schmitter M. Accuracy of the newly Formulated vinyl siloxanether elastomeric impression material. J Prosthet Dent. 2010 Apr;103(4):228-39.
Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed Prosthodontics, 4th edition,2004.