J Korean Acad Conserv Dent.  2008 Sep;33(5):463-471. 10.5395/JKACD.2008.33.5.463.

The effectiveness of sealing technique on in-office bleaching

• Lee Y
• Kwon SR
• Park JW

• KMID: 1986785
• DOI: http://doi.org/10.5395/JKACD.2008.33.5.463

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.

Keyword

In-office bleaching; LLDPE wrap; Sealed bleaching technique; Tooth shade

MeSH Terms

Hydrogen Peroxide
Juglans
Light
Peroxides
Polyethylene
Tooth
Urea
Hydrogen Peroxide
Peroxides
Polyethylene
Urea

Figure

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  Figure 1 Criteria of patient selection.

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  Figure 2 Experimental protocol for the day of the in-office bleaching procedure.

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