Difference between post curing composite hardness with heating using dry sterilizer and radiation using light box

Ratih Widyasari; Mochammad Richata Fadil; Endang Sukartini

doi:10.24198/pjd.vol22no2.26869

Difference between post curing composite hardness with heating using dry sterilizer and radiation using light box

Ratih Widyasari, Mochammad Richata Fadil, Endang Sukartini

Abstract

Introduction: Composite resin has been used as a restoration material for quite a long time. Two different methods were expected to show result of which method that would be the most promising. Aim of study is to analyzed differences the hardness of one composite resin subjected to two post curing treatments. Methods: This study was a true experimental research (in vitro). The subjects were 30 specimens of the hybrid light cured resin composites made in a mold (6 mm diameter and 4 mm high). The hardness of all specimens were tested using Rebound Hardness Tester. Data were compared using ANOVA and post hoc analysis (for pairwise independent groups) using t-tests. Results: This study showed that post curing treatment by heat (for 10 min at 110 ^oC ) showed higher hardness (p<0.005). Conclusion: There was difference of hardness between two methods of post curing. Moreover, post curing with dry heat sterilizer at 110^oC for 10 min was found to be the most promising post curing method.

Keywords

Hardness, resin composite, post curing.

Full Text:

PDF

References

Anusavice K. Philip‘s science of dental material. 11th ed. St.Louis: W.B.Saunders Co; 2003.

Craig RG, Powers JM. Restorative dental materials. 12th ed. St.Louis: Mosby; 2006.

Goldberg IS, Slutzky H, Gorfil C, Smidt A. Restoration of Endodontically Treated Teeth Review and Treatment. Int J Dent 2009: 1-9.

Laiza T, Accetta AM. Influence of post cure treatment in hardness and marginal adaptation of composite resin inlay restorations: an in vitro study. J Appl Oral Sci 2009;17(6):617-22.

Klymus ME, Oshima HMS. Influence of the mechanical properties of composites for indirect dental restorations on pattern failure. Baltic Dent and Maxillofacial J 2007;9:57-60.

Lombardo GHL, Carvalho CF. Influence of additional polymerization in the microhardness of direct composite resins. Cienc Odont Bras 2007;10(2):10-15.

Emami N, Soderholm KJ. How light irradiance and curing time affect monomer conversion in light-cured resin composites. Eur J Oral Sci 2003;111(6):536-42.

Chen YC, Ferracane JL, Prahl SA. Quantum yield of conversion of the photoinitiator camphorquinone. Dental Materials 2007;23:655-64.

Jong LCG, Opdam NJM, Bronkhorst EM, Roeters JJM, Wolke JGC, Geitenbeek B. The effectiveness of different polymerization protocols for class II composite resin restorations. Journal of Dentistry 2007;35:513-20.

Schneider LFJ, Pfeifer CSC, Consani S, Prahl SA, Ferracane JL. Influence of photoinitiator type on the rate of polymerization, degree of conversion, hardness and yellowing of dental resin composites. Dental materials ;24:1169-1117.

Hofmann N, Hugo B, Klaiber B. Effect of radiation type (LED or QTH) on photo-activated composite shringkage strain kinetics, temperature rise, and hardness. Eur J Oral Sci 2002;110:471-79.

Tolosa MCCG, Paulillo LAMS, Giannini M, Souza AJ, Santos Dias CT. Influence of composite restorative materials and light-curing units on diametrical tensile strength. Braz Oral Res 2005;19(2):123-6.

Denny N, Nina D, Renny F. Degree of conversion komposit. JITEKGI 2010;7(1):27-30.

Mesquita RV, Geis-Gerstorfer J. Influence of temperature on the visco-elastic properties of direct and indirect dental composite resins. Dental Materials 2008;24:623-632.

Santos GB, Monte Alto RV, Sampaio Filho HR, De Silva EM,Fellows CE. Light transmission on dental resin composites. Dental materials. 2008;24:571-5.

Lopes LG, Franco EB, Pereira JC, Mondelli RFL. Effect of light-curing units and activation mode on polymerization shrinkage and shrinkage streaa of composite resins. J Appl Oral Sci 2008;16(1):35-42.

DOI: https://doi.org/10.24198/pjd.vol22no2.26869