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KMID : 0362320080330030213
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Journal of Korean Academy of Operative Dentistry
2008 Volume.33 No. 3 p.213 ~ p.223
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Shear bond strength of dentin bonding agents cured with a plasma arc curing light
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Kwon Young-Chul
Kim Sun-Young
Chung Sae-Joon
Han Young-Chul
Lee In-Bog
Son Ho-Hyun
Um Chung-Moon
Cho Byung-Hoon
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Abstract
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The objective of this study was to compare dentin shear bond strength (DSBS) of dentin bonding agents (DBAs) cured with a plasma arc (PAC) light curing unit (LCU) and those cured with a light emitting diode (LED) LCU. Optical properties were also analyzed for Elipar freelight 2 (3M ESPE); LED LCU, Apollo 95E (DMT Systems); PAC LCU and VIP Junior (Bisco); Halogen LCU. The DBAs used for DSBS test were Scotchbond Multipurpose (3M ESPE), Singlebond 2 (3M ESPE) and Clearfil SE Bond (Kuraray). After DSBS testing, fractured specimens were analyzed for failure modes with SEM. The total irradiance and irradiance between 450 nm and 490 nm of the LCUs were different. LED LCU showed narrow spectral distribution around its peak at 462 nm whereas PAC and Halogen LCU showed a broad spectrum. There were no significant differences in mean shear bond strength among different LCUs (P > 0.05) but were significant differences among different DBAs (P < 0.001)
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KEYWORD
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PAC, LED, Dentin bonding agent, Spectral irradiance, Energy density, Dentin shear bond strength
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