ArticleJournal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]2026
Effects of Overnight Whitening Pens on Hydrogen Peroxide Penetration, Color Change, and Enamel Surface Properties.
Article in Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.], 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
Funding
Abstract
objectiveTo evaluate hydrogen peroxide (HP) permeability into the pulp chamber, objective color change, and enamel surface morphology after overnight use of over-the-counter (OTC) whitening pens. MATERIALS AND
methodsFifty sound premolars were assigned to five groups (n = 10): control, Optic White Pen LED (OW), Colgate Luminous White Whitening Pen (LW), Equate Teeth Whitening Kit (EQ), and Whiteness Perfect 10% (WP). Fifteen molars were used for enamel surface analyses (microhardness and roughness). Products were applied for 8 h/day for 10 days. HP penetration (μg/mL) and color change (ΔE
resultsEQ showed the highest HP concentration and the lowest pH. HP penetration was significantly higher for EQ and lowest for WP (p < 0.05). No significant differences in ΔE
conclusionsOvernight OTC whitening pens showed comparable cumulative bleaching efficacy. However, EQ resulted in greater pulpal HP penetration and enamel softening. CLINICAL SIGNIFICANCE: Prolonged overnight OTC whitening pen use may increase pulpal exposure and enamel softening risk, reinforcing cautious use and professional supervision.
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