The effectiveness of sealing technique on in-office bleaching.
10.5395/JKACD.2008.33.5.463
- Author:
Yoon LEE
1
;
So Ran KWON
;
Jeong Won PARK
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Yonsei University Youngdong Severance Hospital, Seoul, Korea. pjw@yuhs.ac
- Publication Type:Clinical Trial ; Original Article
- Keywords:
In-office bleaching;
LLDPE wrap;
Sealed bleaching technique;
Tooth shade
- MeSH:
Hydrogen Peroxide;
Juglans;
Light;
Peroxides;
Polyethylene;
Tooth;
Urea
- From:Journal of Korean Academy of Conservative Dentistry
2008;33(5):463-471
- CountryRepublic of Korea
- Language:English
-
Abstract:
This study investigated the clinical effectiveness and safety of sealed bleaching compared to conventional in-office bleaching using a randomized clinical trial of split arch design. Ten participants received a chairside bleaching treatment on the upper anterior teeth, and each side was randomly designated as sealed or control side. A mixture of Brite powder (PacDent, Walnut, USA), 3% hydrogen peroxide and carbamide peroxide (KoolWhite, PacDent, Walnut, USA) were used as bleaching agent. The control side was unwrapped and the experimental side was covered with a linear low density polyethylene (LLDPE) wrap for sealed bleaching. The bleaching gel was light activated for 1 hour. The tooth shades were evaluated before treatment, after treatment, and at one week check up by means of a visual shade (VS) assessment using a value oriented shade guide and a computer assisted shade assessment using a spectrophotometer (SP). The data were analyzed by paired t-test. In the control and sealed groups, the visual shade scores after bleaching treatment and at check up showed statistically significant difference from the preoperative shade scores (p < .05). The shade scores of the sealed group were significantly lighter than the control immediately after bleaching and at the check-up appointment (p < 0.05). Compared to prebleaching status, the DeltaE values at post-bleaching condition were 4.35 +/- 1.38 and 5.08 +/- 1.34 for the control and sealed groups, respectively. The DeltaE values at check up were 3.73 +/- 1.95 and 4.38 +/- 2.08 for the control and sealed groups. DeltaE values were greater for the sealed group both after bleaching (p < .05) and at check up (p < .05). In conclusion, both DeltaE and shade score changes were greater for the sealed bleaching group than the conventional bleaching group, effectively demonstrating the improvement of effectiveness through sealing.
