The effect of light on tooth whitening: a split‐mouth design. Issue 2 (12th July 2012)

• Record Type: Journal Article
• Authors: Henry, RK; Bauchmoyer, SM; Moore, W; Rashid, RG
• Is Part Of: International journal of dental hygiene. Volume 11:Issue 2(2013:May)
• Page Start: 151
• Page End: 154
• Publication Date: 2012-07-12
• Subjects: Dental hygiene -- Periodicals; Dental hygienists -- Periodicals; 617.60105
• DOI: 10.1111/j.1601-5037.2012.00568.x
• Languages: English
• ISSNs: 1601-5029

Abstract

<abstract abstract-type="main" id="idh568-abs-0001"> <title>Abstract</title> <sec id="idh568-sec-0001" sec-type="section"> <title>Objectives</title> <p>Conflicting research exists on the effect that various lights have on in‐office tooth whitening. The aim of this study was to determine whether a sodium arc bulb lamp used with 25% hydrogen peroxide shows significant differences in shade using a split‐mouth design.</p> </sec> <sec id="idh568-sec-0002" sec-type="section"> <title>Methods</title> <p>Forty‐nine subjects meeting study criteria had anterior teeth whitened with a 25% hydrogen peroxide in‐office whitening system. The light was used on a randomly selected right or left half of the mouth. The opposing side was whitening only with gel. Shades were recorded using a spectrophotometer before, immediately after, 1 and 2 weeks post‐whitening. Sensitivity was also recorded using a visual analogue scale. Values were analysed with a Friedman test with a stepdown Bonferroni adjustment for multiple comparisons.</p> </sec> <sec id="idh568-sec-0003" sec-type="section"> <title>Results</title> <p>All teeth increased in lightness after whitening procedures. The only significant differences between use of the light and without use of the light were on the maxillary arch 1 week after whitening (<italic>P</italic> = 0.010). Sensitivity was greatest immediately after whitening but subsided within 1 week of whitening.</p> </sec> <sec id="idh568-sec-0004" sec-type="section"> <title>Conclusions</title> <p>The use of a sodium arc bulb lamp with 25% hydrogen peroxide in‐office whitening produces better results on maxillary teeth up to 1 week after whitening is completed. Subjects could not distinguish differences on each side of the mouth.</p> </sec> </abstract>