Research Article

Comparative evaluation of color change induced by over-the-counter whitening pens

Volume: 29 Number: 1 March 27, 2026
TR EN

Comparative evaluation of color change induced by over-the-counter whitening pens

Abstract

Objective: This study aimed to assess and compare the short-term whitening performance of three over-the-counter (OTC) whitening pens and one home bleaching agent on extracted human teeth using spectrophotometric color evaluation. Materials and Methods: Sixty maxillary incisors were randomly distributed into five groups (n = 12 each): three OTC whitening pens (iSmile, SDI Pola Luminate, CleverCool), one home bleaching gel (SDI Polanight), and a control group. Whitening protocols were applied according to manufacturers’ directions for seven consecutive days. Tooth color was recorded at baseline (T0), after 7 days of treatment (T7), and at day 14 (T14) using a spectrophotometer. Color change (ΔE) was calculated through the CIELab system. Statistical analysis was performed with one-way ANOVA and Tukey’s post-hoc tests (α = 0.05). Results: All experimental groups presented significantly greater ΔE values compared with the control (p < 0.001). The iSmile pen produced the most noticeable change at both T7 and T14. SDI Polanight achieved similar but slightly lower whitening, while Pola Luminate and CleverCool provided moderate improvements with no significant difference between them. Conclusion: OTC whitening pens are capable of delivering visible short-term whitening effects, although their effectiveness varies across products. A higher peroxide concentration was associated with a more pronounced bleaching outcome.

Keywords

References

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Details

Primary Language

English

Subjects

Restorative Dentistry , Dental Materials

Journal Section

Research Article

Publication Date

March 27, 2026

Submission Date

September 24, 2025

Acceptance Date

November 12, 2025

Published in Issue

Year 2026 Volume: 29 Number: 1

EndNote
Yıldırım Manav E, Yılmaz Çakıroğlu AE (March 1, 2026) Comparative evaluation of color change induced by over-the-counter whitening pens. Cumhuriyet Dental Journal 29 1 99–103.

Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.


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