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Evaluation of Effect of Teeth Whitening Agents on Enamel and Long-Term Patient Satisfaction: A Prospective Study
Ekta Gupta1, Kiran Singbal2, Pratik Agrawal3
1Department of Orthodontics and Dentofacial Orthopeadics, Siddhpur Dental College and Hospital, Patan, Gujarat, India.
Introduction:
Teeth whitening is one of the most frequently requested cosmetic dental procedures. However, concerns about the long-term impact of various whitening methods on enamel microhardness and patient satisfaction remain. This study aimed to evaluate the effects of three commonly used whitening techniques-professional in-office bleaching, at-home bleaching, and over-the-counter (OTC) products-on enamel microhardness and patient satisfaction over time.
Methods:
A total of 90 participants were divided into three groups: 30 received in-office bleaching, 30 performed at-home bleaching, and 30 used OTC whitening products. Enamel microhardness was measured before and after treatment using a Vickers microhardness tester. Patient satisfaction was assessed via a standardized questionnaire at two intervals: immediately post-treatment and three months later.
Results:
Significant differences were found between the groups regarding enamel microhardness, with in-office bleaching causing the greatest reduction (P < 0.05). At-home bleaching showed a moderate decrease, while OTC products had the least impact on microhardness. In contrast, patient satisfaction was highest in the in-office bleaching group, followed by at-home and OTC groups.
Conclusion:
Although in-office bleaching led to a significant reduction in enamel microhardness, it was associated with the highest patient satisfaction. This highlights the need for clinicians to balance efficacy and enamel preservation when recommending whitening treatments.
