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KMID : 0358920050320040604
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Journal of the Korean Academy of Pedodontics
2005 Volume.32 No. 4 p.604 ~ p.610
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MICROLEAKAGE IN RESIN COMPOSITE POLYMERIZED WITH VARIOUS LIGHT CURING UNITS
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Park Sung-Jin
Kim Dae-Eop
Lee Kwang-Hee
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Abstract
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This study was to evaluate the effects of several light curing units on the microleakage of composite resin restorations in primary teeth.
The types of curing units were traditional low intensity halogen light(Optilux 360), plasma arc light(Filpo), low heat plasma arc light(Aurys) and high intensity LED(Freelight 2). After preparing cavities on sound primaty teeth. cavities were filled with composite resin(Z100) using the same resin bond agent(Scotchbond MultiPurpose) and were cured with each curing light system. After storing each specimen in sterile water for 24 hours, thermal circulation was done 1,000 times followed by pigmentation using 2% methylene blue solution. Each specimen was sliced and the degree of Aurys was 0.95 which was the lowest and Freelight 2(1.05), Filpo(1.25), Optilux360(1.30) followed. But values were not shown statistically significant difference (P>0.05).
The results suggest that the newly developed curing units which has advantage in children by decreasing discomfort and procedure time can increase the microleakage of the composite resin.
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KEYWORD
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Light curing, Microleakage, Primary teeth
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