| Tsai CY |
------>authors3_c= ------>paper_class1=2 ------>Impact_Factor=None ------>paper_class3=0 ------>paper_class2=0 ------>vol= ------>confirm_bywho=seanlee ------>insert_bywho=cytsai ------>Jurnal_Rank=None ------>authors4_c= ------>comm_author= ------>patent_EDate=None ------>authors5_c= ------>publish_day=12 ------>paper_class2Letter=None ------>page2= ------>medlineContent= ------>unit=F0000 ------>insert_date=20060505 ------>iam=1 ------>update_date=None ------>author=??? ------>change_event=4 ------>ISSN= ------>authors_c= ------>score=185 ------>journal_name=The 64th Annual Meeting of the Japanese Orthodontic Society ------>paper_name=The effect of human tooth bleaching agent in orthodontic bonding strength ------>confirm_date=20071203 ------>tch_id=081003 ------>pmid=16360917 ------>page1= ------>fullAbstract=INTRODUCTION: The purpose of this study was to determine the effect of enamel bleaching on the shear bond strength of orthodontic brackets bonded with a composite adhesive. METHODS: Two protocols were used on 60 human molars. In the at-home bleaching group (n = 30), Opalescence bleaching agent (Ultradent, South Jordan, Utah), which contains 10% carbamide peroxide, was brushed onto the teeth daily for 14 days and left for 6 hours each day. Teeth in the in-office group (n = 30) were treated with Zoom! (Discus Dental, Culver City, Calif), which contains 25% hydrogen peroxide gel, and then exposed to a light source for 20 minutes; these teeth were treated twice. After bleaching, the specimens were randomly divided into equal subgroups and stored in artificial saliva at 37 degrees C for 7 or 14 days before bonding. Shear bond strength testing was performed on all teeth. The Kruskal-Wallis test for nonparametric means was used to determine whether significant differences existed between the various subgroups and an unbleached control group. RESULTS: The mean shear bond strength for the control group was 5.6 +/- 1.8 MPa. Means for the at-home groups were 5.2 +/- 3.6 MPa and 7.2 +/- 3.2 MPa for the 7- and 14-day waiting periods, respectively. Means for the in-office groups were 5.1 +/- 5.3 MPa and 6.6 +/- 2.6 MPa for the 7- and 14-day waiting periods, respectively. The Kruskal-Wallis test (X(2) = 8.089) indicated no significant differences between the 5 subgroups (P = .088). CONCLUSIONS: The results showed that in-office and at-home bleaching did not affect the shear bond strength of orthodontic brackets to enamel. ------>tmu_sno=None ------>sno=13751 ------>authors2=Wang WN ------>authors3=Cheng HY ------>authors4= ------>authors5= ------>authors6= ------>authors6_c= ------>authors=Tsai CY ------>delete_flag=0 ------>SCI_JNo=None ------>authors2_c= ------>publish_area=1 ------>updateTitle=The effect of tooth bleaching on the shear bond strength of orthodontic brackets. ------>language=2 ------>check_flag=None ------>submit_date=None ------>country=None ------>no= ------>patent_SDate=None ------>update_bywho=None ------>publish_year=2005 ------>submit_flag=None ------>publish_month=10 |