Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30169
Polymerisation Shrinkage of Light−Cured Hydroxyapatite (HA)−Reinforced Dental Composites

Authors: Bilge S. Oduncu, Sevil Yucel, Ismail Aydin, Isil D. Sener, Gokhan Yamaner

Abstract:

The dental composites are preferably used as filling materials due to their esthetic appearances. Nevertheless one of the major problems, during the application of the dental composites, is shape change named as “polymerisation shrinkage" affecting clinical success of the dental restoration while photo-polymerisation. Polymerisation shrinkage of composites arises basically from the formation of a polymer due to the monomer transformation which composes of an organic matrix phase. It was sought, throughout this study, to detect and evaluate the structural polymerisation shrinkage of prepared dental composites in order to optimize the effects of various fillers included in hydroxyapatite (HA)-reinforced dental composites and hence to find a means to modify the properties of these dental composites prepared with defined parameters. As a result, the shrinkage values of the experimental dental composites were decreased by increasing the filler content of composites and the composition of different fillers used had effect on the shrinkage of the prepared composite systems.

Keywords: Dental composites, hydroxyapatite (HA), BisGMA, shrinkage.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1070913

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1678

References:


[1] R. L. Bowen and W. A Marjenhoff, "Dental composites/glasses ionomer: The materials," Adv. Dent. Res., vol. 6, pp. 44-49, 1992.
[2] E. Asmussen and A. Peutzfeldt, "Influence of UEDMA, Bis-GMA and TEGDMA on selected mechanical properties of expeimental resin composites," Dent. Mater., vol. 14, pp. 51-56, 1998.
[3] G. Willems, P. Lambrechts, M. Braem, J. P. Celis and G. Vanherle, "A classification of dental composites according to their morphological and mechanical characteristics", Dent. Mater., vol. 8, pp. 310-319, 1992.
[4] R. W. Phillip, Skinner-s Science of Dental Materials. Philadelphia: Saunders, 9th ed., 1991.
[5] A. Peutzfeldt, "Resin composites in dentistry: The monomer systems," Eur. J. Oral Sci., vol. 105, pp. 97-116, 1997.
[6] B. M. Grifftihs, M. Naasan, M. Sherriff and T. F. Watson, "Variable polymerization shrinkage and the interfacial micropermeability of a dentin bonding system," J. Adhes. Dent., vol. 1, pp. 119-131, 1999.
[7] P. Koran and R. Kurschner, "Effect of sequential versus continuous irradiation of a light-cured resin composite on shrinkage, viscosity, adhesion and degree of polymerization," Am. J. Dent., vol. 11, pp. 17- 22, 1998.
[8] G. L. Unterbrink and W. H. Liebenberg, "Flowable resin composites as filled adhesives: literature review and clinical recommendations," Quintessence, vol. 30, pp. 249-257, 1999.