Optical, Mechanical, and Chemical Properties of Colored Compomer

다국어 초록 (Multilingual Abstract)

Recently introduced color compomers for deciduous teeth may improve the cooperation of children in dental clinics. These products have several colors and glittering effect. The purpose of this study was to test the effect of coloring and glittering on light transmittance and microhardness of colored compomers. Two commercial products, Twinky Star and Glasiosite (Voco, Cuxhaven, Germany), were used for this study. The cured samples were examined using scanning electron microscopy. Several samples were prepared and measured using a Vickers hardness tester (FM-7, Future-Tec Inc., Tokyo, Japan). After that, three samples were randomly chosen for the light transmittance analysis using spectrophotometer (CARY 5G, Varian, Victoria, Australia) and the absorbance was measured. The fluoride content released from the sample was measured using an ion chromatograph (LC-10AVP Series, Shimadzu, Tokyo, Japan). It is concluded from the present study that the color of each compomer may affect the light transmittance, resulting in change of the microhardness value. The included glittering particles additionally decreased the microhardness of colored compomers. The accumulated fluoride concentrations for 14 days were far less than 0.2 ppm in all tested compomers, even though they were supposed to release fluoride.
Key words: Color compomer, Light transmittance, Microhardness, Fluoride release

참고문헌 (Reference)

1 O'Brien, "“Translucency of dental porcelains" 70-75, 1980

2 O'Brien, "“Translucency of dental porcelains" 70-75, 1980

3 Asmussen, "and from experi-mental resin composites" 93-97,

4 Kawaguchi, "The relation-ship between cure depth and transmission coefficient of visible-light-activated resin composites" 516-521,

5 A, "The physical and mechan-ical properties of anterior and posterior composite restorativematerials" 365-368, 1989

6 A. Peutzfeldt, "Surface hardness and wear of glass ionomers and compomers" 10 : 15-17, 1997

7 W. Geurtsen, "Residual monomer/additive release and variability in cytotoxicity of light-curingglass-ionomer cements and compomers" 77 : 2012-2019, 1998

8 T. Itota, "Release and recharge of fluoride by restorative materials" 18 : 347-353, 1999

9 K, Yoshida, "Properties of opaque resincomposite containing coated and silanized titanium dioxide" 80 : 864-868, 2001

10 I.H. el-Kalla, "Mechanical properties ofcompomer restorative materials" 24 : 2-8, 1999

11 B. Behrend, "Long-term effects of four extrac-tion media on the fluoride release from four polyacid-modifiedcomposite resins (compomers) and one resin-modified glass-ion-omer cement" 58 : 631-637, 2001

12 A, "Fluoride release from some den-tal materials in different solutions" 14-19,

13 H. K. Yip, "Fluoride release from a polyacid-modified resin composite and 3 resin-modified glass-ionomermaterials" 31 : 261-266, 2000

14 N. Atar, "Fluoride release and uptake capaci-ties of fluoride-releasing restorative materials" 28 : 395-402, 2003

15 S. M. Chung, "Elastic modulus of resin-based dental restorative materials: a microindentation approach" 72 : 246-253, 2005

16 W. Geurtsen, "Effect of stor-age media on the fluoride release and surface microhardness of42 Sung-Wook Hwang, Tae-Yub Kwon, Kyo-Han Kim, Yong-Hoon Kwon, Hyung-Il Kim, and Jai-Bong LeBiomaterials Research 207four polyacid-modified composite resins (compomers)," 15 : 196-201, 1999

17 I, "Conversion in different depths ofultraviolet and visible lighting activated composite materials" 179-192, 1982

18 Taira, "Anal-ysis of photo-initiators in visible-light cured dental composite res-ins" 24-28, 1988