光照射器と照射条件がコンポジットレジン硬化体の諸性質に及ぼす影響

概要

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The purpose of this study was to examine the influence of curing light units and exposure conditions on the prperties of the polymerization of a lightcured resin composite. Lightfil was used as a resin composite. The curing light units used were a JETLITE, as a halogen lamp curing light source (HAL), a MICROWAVE, as a xenon lamp curing light source (XEN), and a AQUABLUE, as a light-emitting diode curing light source (LED). Each curing light unit was used to cure the resin composite with the irradiation periods according to the manufacture's instructions. The rise in temperature of sruide tip with curing light units during irradiation, and the depth of polymerization, diametral tensile strength, vickers hardness (HV) and polymerization shrinkage of resin composite lightcured were determined. The results obtained were as follows. 1. Greatest rise in temperative of guide tip and shallow polymerization depth of resin composite was observed when XEN curing light unit was used to cure the resin composite as compared with those using HAL and LED. 2. A small HV and diametral tensile strength value were obtained when XEN was used to cure the resin composite as compared with those using HAL and LED. 3. The kind of light source curing unit had no signficant influence on the polymerization shirinkage of resin composite.
2003-06-30