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Nightguard vital bleaching and its effect on enamel surface morphology
R H Leonard1, J C Eagle, G E Garland
1Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill 27599-7450 USA. Ralph_Leonard@dentistry.unc.edu
Summary
Nightguard vital bleaching (NGVB) with 10% carbamide peroxide showed minimal enamel surface changes after 14 days. These effects on dental enamel did not worsen at the 6-month follow-up, indicating a safe whitening treatment.
Area of Science:
- Dental Science
- Biomaterials Science
Background:
- The impact of nightguard vital bleaching (NGVB) on dental enamel surface morphology remains debated.
- Prior research indicates varied effects, from minimal changes to post-treatment deterioration.
Purpose of the Study:
- To investigate the in vivo effects of 10% carbamide peroxide NGVB on enamel morphology.
- To assess changes after 2 weeks of treatment and at 6 months post-treatment using scanning electron microscopy (SEM).
Main Methods:
- Ten patients underwent 14 days of NGVB treatment (8-10 hours/day).
- Dental impressions were taken at baseline, 14 days, and 6 months for SEM analysis.
- Examiners evaluated enamel surface morphology changes masked to treatment stage.
Main Results:
- A 14-day NGVB regimen using 10% carbamide peroxide resulted in minimal alterations to enamel surface morphology.
- Observed effects on dental enamel did not exhibit worsening at the 6-month follow-up point.
Conclusions:
- NGVB with 10% carbamide peroxide demonstrates a safe profile regarding enamel surface morphology.
- The study supports that NGVB treatment does not lead to progressive enamel degradation over time.