Contemporary issues in photocuring.
Currently, there is much confusion regarding differences among the variety of light-curing units on the market. Units range from conventional, fixed, continuous output quartz-tungsten-halogen (QTH) models, to very high-intensity systems such as the plasma-arc (PAC) units and the argon-ion lasers. Also, a trend has been established for purposefully providing low light intensity output during initial phases of the curing exposure: the so-called "soft-start" method. Proponents of this method state that by decreasing the rate at which a photoactivated resin cures, stress buildup at the tooth/restoration interface can be minimized, resulting in enhanced marginal integrity.
Rueggeberg
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School of Dentistry, Medical College of Georgia, Augusta, Georgia, USA.
D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects*; D003748:Dental Equipment; D018772:Dental Marginal Adaptation; D003799:Dental Stress Analysis; D005609:Free Radicals; D006244:Hardness; D007834:Lasers; D008027:Light; D019563:Mechanics; D017319:Photosensitizing Agents / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000528:radiation effects; D013674:Technology, Dental / Q000379:methods*; D013729:Terpenes / Q000737:chemistry / Q000528:radiation effects
D003188:Composite Resins; D005609:Free Radicals; D017319:Photosensitizing Agents; D011108:Polymers; D013729:Terpenes; C048339:camphoroquinone