Keywords
Dental impression materials Técnica de Moldagem Odontológica
Materiais para Moldagem Odontológica
How to Cite
Abstract
A quality molding is essential for the success of dental prosthesis manufacturing and its outcome is directly dependent on the dimensional stability, precision and flexibility of the impression materials as well as the technique used. Addition silicone is one of the most favored impression materials in dentistry. Its dimensional accuracy is superior to all other impression materials available in the market, being able to copy fine details of dental structures. Factors that influence the accuracy of a molding include proper material handling and the technique used. The aim of this paper was to report a modified molding technique that combines the qualities of one and two-step double viscosity molding techniques without adding time and cost. The technique consisted of accommodating the silicon heavy mass throughout the length of the stock tray by pressing it with fingers in the areas corresponding to the teeth forming a concave shape. Then the fluid silicone was added in the concavity area until it was completely filled. The adapted single step molding technique with addition silicone was effective, being easy to be performed in the clinical daily life. It makes possible to combine the advantage of the two-step molding technique in copying the details due to the predominance of fluid silicone and the advantage of the one-step technique in decreasing clinical time.
References
2. Punj A, Bompolaki D, Garaicoa J. Dental impression materials and techniques. Dent Clin N Am. 2017 Oct; 4(61):779-796.
3. Pande NA, Parkhedkar RD. An evaluation of dimensional accuracy of one-step and two-step impression technique using addition silicone impression material: an in vitro study. Indian Prosthodont Soc. 2013 Jul; 13(3):254-9.
4. Levartovsky S, Zalis M, Pilo R, Harel, N, Ganor Y, Brosh T. The Effect of One-Step vs. Two-Step Impression Techniques on Long-Term Accuracy and Dimensional Stability when the Finish Line is within the Gingival Sulcular Area. Journal of Prosthodontics. 2013 Feb; 23(2):124-133.
5. Caputi S, Varvara G. Dimensional accuracy of resultant casts made by a monophase, one-step and two-step, and a novel two-step putty/light-body impression technique: an in vitro study. The Journal of Prosthetic Dentistry. 2008; 99(4):274-281.
6. Mubashir AS, Motwani BK, Sahu S, Singh S, Kulkarni S. Dimensional accuracy & stability of silicone putty wash impression technique with different thickness of light body material. J Cont Med A Dent. 2015 jan; 3(1):81-4.
7. Wostmann B, Rehmann P, Balkenhol M. Influence of impression technique and material on the accuracy of multiple implant impressions. Int J Prosthodont. 2008; (21)299-301.
8. Rathee S, Eswaran B, Eswaran MA, Prabhu R, Geetha KR, Krishna GP, et al. A comparison of dimensional accuracy of addition silicone of different consistencies with two different spacer designs - in-vitro study. Journal of Clinical and Diagnostic Research. 2014 Jul; 8(7):38-41.
9. Faria ACL, Rodrigues RCS, Macedo AP, Mattos MGC, Ribeiro RF. Accuracy of stone casts obtained by different impression materials. Brazilian Oral Research. 2008; 22(4):293-8.
10. Kumari N, Nandeeshwar D. The dimensional accuracy of polyvinyl siloxane impression materials using two different impression techniques: an in vitro study. The Journal of Indian Prosthodontic Society. 2015; 15(3):211-7.