Effect of Bleach Lamp Using Combination In-office and Take-home Peroxides
Objectives:
To compare effect of 6% hydrogen peroxide (HP) in-office plus 3 days take home 16% carbamide peroxide (CP). Methods: Seventy-seven patients (n=308 teeth) were treated chairside with 6%HP with and without light (Zoom WhiteSpeed) and treated for 3 nights with 16%CP (NiteWhite) overnight starting at visit 3. Visual (VITA Bleachedguide 3D-Master, BG) and instrumental (Vita Easyshade) measurements were taken after in-office and post combination treatment. Color differences (ΔE*) were calculated; ΔE*=2.7 represents the 50:50% acceptability threshold(AT) and ΔE*=1.2 represents 50:50% perceptibility threshold(PT). A paired t-test at the 0.05 alpha level was performed to compare light vs no light means within subjects at each time point for instrumental and visual data. A survey of tooth and gingival sensitivity was completed. Results: Means(s.d.) for time period comparisons are listed below.
The results shows significant differences between light and no light groups for SGU at each time period (p=0.0001, 0.0089, 0.0148, respectively) while there were no significant differences at each time period with respect to ΔE*.
The greatest majority of subjects reported no tooth or gingival sensitivity for in-office while some mild sensitivity was reported for overnight treatment. Conclusions: The use of a bleaching lamp showed improved visual and instrument color changes compared to no light at each time period. An additional 3 nights of treatment with 16% CP after chairside whitening was effective in preventing rebound.
Division: AADR/CADR Annual Meeting
Meeting:2018 AADR/CADR Annual Meeting (Fort Lauderdale, Florida) Location: Fort Lauderdale, Florida
Year: 2018 Final Presentation ID:1560 Abstract Category|Abstract Category(s):Dental Materials 7: Color and Appearance (Esthetics)
Authors
Eldiwany, Magda
( The University of Texas Health Science Center at Houston
, Houston
, Texas
, United States
)
Mirza, Farah
( Philips Oral Healthcare
, Bothell
, Washington
, United States
)
Ontiveros, Joe
( The University of Texas Health Science Center at Houston
, Houston
, Texas
, United States
)
Sly, Marilia
( The University of Texas Health Science Center at Houston
, Houston
, Texas
, United States
)
Pereira Sanchez, Natalie
( The University of Texas Health Science Center at Houston
, Houston
, Texas
, United States
)
Paravina, Rade
( University of Texas at Houston
, Houston
, Texas
, United States
)
Fay, Rose-marie
( University of Texas Health Science Center Houston
, Houston
, Texas
, United States
)
Gonzalez, Maria
( The University of Texas Health Science Center at Houston
, Houston
, Texas
, United States
)
Arriaga, Diana
( University of Texas Health Science Center Houston
, Houston
, Texas
, United States
)
Ward, Marilyn
( Philips
, Bothell
, Washington
, United States
)
Support Funding Agency/Grant Number: Philips Oral Healthcare
Financial Interest Disclosure: Joe Ontiveros Consultation with Consumer Lifestyle, Oral Healthcare, a division of Philips
SESSION INFORMATION
Poster Session
Color and Appearance (Esthetics) II
Saturday,
03/24/2018
, 11:00AM - 12:15PM
TABLES
1) Baseline, 2) Immediately after chairside whitening, 3) one week after chairside whitening, and 4)two weeks after chairside whitening. SGU=shade guide units, ΔE*=instrumental color difference.