EFFECT OF 10-PERCENT-CARBAMIDE-PEROXIDE ON COLOR OF PROVISIONAL RESTORATION MATERIALS

To improve esthetic results, nightguard vital bleaching of teeth using 40 percent carbamide peroxide, or CP, may be indicated when an anteri or tooth is restored with a provisional crown, This study evaluated th e effect of NGVB solutions containing 10 percent CP on the color stabi lity of provisional restoration materials. Disks were fabricated from six representative provisional restoration materials and were tested i n five different 10 percent CP bleaching agents. An orange discolorati on occurred with provisional materials that contained methacrylate whe n they were exposed to 10 percent CP bleaching solutions.