Custom Bleaching Trays are the best way to achieve whitening of your teeth. We see you for a short appointment and take impressions of your upper and lower teeth. The trays are fabricated at our office within a few days. We will go over instructions on how to use the Opalescence® Bleaching Gel or the SDI poladayCP Gel in your trays for the best results. We carry refills for the Opalescence® Bleaching Gels in our office in 10% and 15% strengths and the SDI poladayCP in 22% and 35% strengths .