The effect of Beyond cold light tooth whitening kit on bleaching the teeth changed in color with age

Objective: To evaluate the effect and safety of Beyond cold light tooth whitening kit on bleaching the teeth changed in color with age. Methods: 426 teeth changed in color with age in 32 patients were bleached with Beyond cold light tooth whitening kit, and 431 teeth changed in color with age in 32 patients were bleached with Aulen bleaching agent as control. The changes of teeth color were evaluated by VITA shade guide matching, and the sensitivity of tooth was recorded. Results:The highly effective rate (89.7%) of experimental group was significantly higher than that(73.3%) of control group(P0.05). Nine of thirty-two patients(28.1%)had slight tooth aches or gingival injury in experimental group, and 10 of thirty-two patients(31.3%)had different degree of tooth aches or gingival injury in control group, there was no difference between the two groups(P0.05). Conclusion: Beyond cold light tooth whitening kit is proved to be an effective, safe and quick method of bleaching the teeth changed in color with age.