How to improve light curing output

Abstract

There are several reasons for low intraoral curing light output as reported in the CRA Newsletter February 1989.l TRCINSFORNER STEPUP Output 126 VAC Fig. 1 illustrates the variation in light output versus line voltage input. The equipment used was a Cure Rite radiometer (EFOS, Williamsville, N. Y.), a Fluke 8921A True RMS voltmeter (John Fluke Mfg. Co., Everett, Wash.), a Visilux curing light (3M, St. Paul, Minn.) and a variable transformer. If low voltage is a problem, a wired small transformer will raise the alternating current line voltage; a 6-volt l-ampere transformer is commonly available (Fig. 2). If, after the wiring as shown is completed, the output is reduced by 6V (114 V), the leads marked x and y should be reversed. The output of the transformer needs to be rated for amperage rating of the curing light. X