Koniaris, A.

Margaritis, Vasileios

English

Walden University

Walden University ScholarWorks Walden Faculty and Staff Publications 9-1-2015 Challenging the efficacy of different dental bleaching protocols A. Koniaris Vasileios Margaritis Walden University, vasileios.margaritis@waldenu.edu Follow this and additional works at: https://scholarworks.waldenu.edu/facpubs  Part of the Dentistry Commons Recommended Citation Koniaris, A. and Margaritis, Vasileios, "Challenging the efficacy of different dental bleaching protocols" (2015). Walden Faculty and Staff Publications. 592. https://scholarworks.waldenu.edu/facpubs/592 This Conference Proceeding is brought to you for free and open access by ScholarWorks. It has been accepted for inclusion in Walden Faculty and Staff Publications by an authorized administrator of ScholarWorks. For more information, please contact ScholarWorks@waldenu.edu. Walden UniversityScholarWorksSchool of Health Sciences Publications College of Health Sciences9-2015Challenging the efficacy of different dentalbleaching protocolsA. KoniarisVasileios MargaritisWalden UniversityFollow this and additional works at: http://scholarworks.waldenu.edu/shs_pubsPart of the Dentistry CommonsThis Conference Proceeding is brought to you for free and open access by the College of Health Sciences at ScholarWorks. It has been accepted forinclusion in School of Health Sciences Publications by an authorized administrator of ScholarWorks. For more information, please contactScholarWorks@waldenu.edu.DENTAL SCHOOL UNIVERSITY OF ATHENS112CHALLENGING THE EFFICACY OF DIFFERENT DENTAL BLEACHING PROTOCOLS. AN IN VITRO STUDYOPERATIVE DENTISTRY DEPARTMENT, DENTAL SCHOOL,     UNIVERSITY OF ATHENS, GREECEA. Koniaris*, V. Margaritis, M. Antoniadou and A. KakabouraΔΕWhiteningprotocolst1 (baseline) t2 (after staining) t3 (90 days) t4 (180 days)Group 1 (BH) 9,53 (±5,61) 1,2,3 5,20 (±4,05) 1,4,5 12,59 (±6,43) 2,4,6 15,22 (±6,47) 3,5,6Group 2 (BO1) 10,36 (±4,27) 1 5,87 (±5,04) 1,2,3 9,48 (±3,17) 2,4 10,77 (±3,37) 3,4Group 3 (BO2) 11,67 (±5,93) 1 7,31 (±4,66) 1,2,3 11,19 (±6,63) 2 12,43 (±5,94) 3Group 4 (BH-BO1) 12,41 (±5,31) 1,2 4,88 (±2,89) 1,3,4 9,84 (±4,55) 2,3,5 11,71 (±4,61) 4,5Literature1.Dietschi D, Benbachir N, Krejci I. In vitro colorimetric evaluation of the efficacy of home bleaching and over-the-counter bleaching products. Quintessence Int 2010; 41(6): 505-516.2.Scaminaci Russo D, et al. "Color stability of bleached teeth over time: an in vitro study." Eur J Esthet Dent 2010; 5(3): 300-310.3.Giachetti L, et al. "A randomized clinical trial comparing at-home and in-office tooth whitening techniques: A nine-month follow-up." J Am Dent Assoc 2010;141(11): 1357-1364.4.Dawson PF, et al. "A clinical study comparing the efficacy and sensitivity of home vs combined whitening." Oper Dent 2011; 36(5): 460-466.CONCLUSIONS. In-office, at-home and combined bleaching protocols proved to be equally efficient although severaldifferences were detected concerning color coordinates. All protocols tested provided significant color change in stained teethjust after bleaching within the same group. BH had the highest relapse, while BH-BO1 reported better bleaching efficiency at6 months.a b c d ePURPOSE. Investigation of the in vitro efficiency of four dental bleaching protocols on the color change of teeth, stained by ablack tea solution.MATERIALS AND METHODS. One hundred intact, extracted, human incisors were randomly divided (n=4x25/group) andunderwent black tea staining {2gr black tea (M&S Fairtrade Earl Grey) at 100ml boiled distilled water}, for seven days in roomtemperature (Fig.1).The bleaching protocols applied per group were1-4:A. 14 days x 120 min/day 10% CP (Opalescence PF 10%, Ultradent) with trays (bleaching at home-BH),B. 2 times x (3 appl/time x 15min) 40% HP, (Opalescence Boost 40%, Ultradent) (bleaching in office-BO1),C. 3 times x (3 appl/time x 15min) 40% HP, (Opalescence Boost 40%, Ultradent) (bleaching in office-BO2) and,D. 14 days x 120 min/day 10% CP with trays and 2 times x (3appl/time x 15 min) 40% HP (combined BH-BO1).Fig. 1. Materials and methods of the study: a.Tooth numbering, b. Stained natural teeth fixed on frasaco and impression taking, c. Dental cast for splint preparation d. In–office whitening for groups B and C, e.Colorimeter.The color measurements were conducted at baseline (t0) and after staining (t1), bleaching application (t2), 90 (t3) and 180 (t4)days, with a colorimeter (Dr Lance Micro Colour, Braive Instruments) in CIEL*a*b* system. ΔΕ values were calculated relative tot0 and analyzed by three-way ANOVA, Mann-Whitney U and Wilcoxon tests (a=0.01).RESULTS. There were no group-depended differences for ΔE values and L* was significantly different at all times for all groups.All groups presented augmenting L* values from t1 to t2 and diminishing from t2 to t4 (Fig.2). BH had significant differences in L*values at all-times. At t3 and t4 the lowest L* and the highest ΔΕ were reported for BH while the requested combination of ahigh L* and a low ΔΕ was reported to be best for BH-BO1 (Table 1).Fig. 2. Graphs presenting L*, a*, b* and ΔE variation over timeTable 1. Mean ΔE values for all groups at all times. Same numbers within the rows for each parameter (L*, a*, b*) indicate statistically significant differences between time points for each group/row, Friedman test and post-hoc Wilcoxon Signed Ranks test, p<0.01. 

Challenging the efficacy of different dental bleaching protocols

https://scholarworks.waldenu.edu/cgi/viewcontent.cgi?article=1603&context=facpubs

Challenging the efficacy of different dental bleaching protocols

Abstract

Similar works

Full text

Available Versions

Walden University