Abstract
Objective To compare the efficacy of Wy10 bleaching equipment and Beyond Ⅱcold light whitening apparatus for discolored tooth.Methods 100 patients were randomed into two groups:treatment group and control group.50 patients accepted the treatment of Wy10 (treatment group),and another 50 patients accepted the treatment of Beyond Ⅱ (control group).Efficacy was measured according to the Vita classical shade guide after treatment.Sensitivity between groups were tested by SPSS11.0 software package.Results The two groups did not significantly differ in tooth shade at the end of the treatment.Significant differences in sensitivity were detected between experimental group and control group (P＜0.05).Conclusions Both of treatment with using the Wy10 and Beyond Ⅱ system shows significant clinical efficacy,and Wy10 bleaching equipment can significantly solve patients' problems due to postoperative tooth sensitivity and fear. Key words: Wy10 bleaching equipment; In office cold light bleaching; Discolored tooth
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