Production of inexpensive LED curing units is on the rise, but can those units compare with American-made VALO? Dr. Dan Fischer explains the difference between LED lights inexpensively manufactured overseas and VALO engineering. He summarizes findings in research by Dr. Richard Price and then outlines requirements for a curing light being used for posterior restorations and bulk fill restorations. Dr. Fischer also gives tips for getting an accurate reading on your light curing meter. Dan E. Fischer is President and CEO of Ultradent Products, Inc. He is extensively involved in the research and development of many dental products and maintains a part-time practice with an emphasis on esthetic dentistry.