Objectives: The aim of this study was to investigate the effects of light curing method on the polymerization shrinkage of composite resins.
Materials and Methods: Eight methods of four different light curing units were tested by forming 16 groups using two different composite types. Resin composite specimens weights were determined with an analytical electronic hydrostatic balance in the air and in water before and after curing. Then specific gravity values were determined. Volumetric polymerization shrinkage was calculated using mathematical formulas.
Results: According to the results of this in-vitro study, polymerization shrinkage differed significantly among the light curing units.
Conclusions: When the amount of polymerization shrinkage was compared, it was determined that the curing method, which has the greatest total energy density, caused the greatest amount of shrinkage. It was also found out that some of the curing units affected the shrinkage positively in soft-start mode.
Composite resin; curing light; polymerization shrinkage; light intensity; total energy
Birincil Dil | İngilizce |
---|---|
Bölüm | Original Research Articles |
Yazarlar | |
Yayımlanma Tarihi | 3 Ocak 2012 |
Gönderilme Tarihi | 24 Mart 2011 |
Yayımlandığı Sayı | Yıl 2012Cilt: 15 Sayı: 1 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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