Atul Khajuria, Sukhmeet Kaur Bedi, | International Journal of Nanomaterials and Nanostructures | Vol 12, Issue 1 | ISSN: 2455-5584
Abstract
Demand for tooth whitening is growing worldwide, but conventional peroxide-based bleaching is associated with dentin hypersensitivity, enamel softening, and soft tissue irritation, especially under repeated or high-concentration use. Nanotechnology offers a new class of non-invasive whitening strategies that aim to combine esthetic improvement with enamel protection and remineralization. Among these, nanohydroxyapatite (nanoHAP) toothpastes and gels have the most advanced evidence base; in vitro and in situ studies indicate that nanoHAP deposits within enamel surface defects, modifies light scattering, and provides clinically perceptible color change while supporting remineralization and reducing hypersensitivity. Additional nano-enabled approaches include liposomal delivery of reductants, whitening toothpastes containing nanometal oxides or other nanowhitening agents, and experimental systems using graphene-based or piezoelectric particles capable of generating reactive oxygen species under mechanical or optical activation. Regulatory frameworks have not fully caught up with these innovations. In the United States, most tooth whitening devices are regulated as low-risk medical devices that can be registered with, but not “approved” by, the U.S. Food and Drug Administration (FDA), while gels are typically treated as cosmetics unless they make therapeutic claims. In India, a 2022 Bureau of Indian Standards (BIS) draft standard proposes concentration limits, impurity thresholds, and labelling requirements for whitening and bleaching products, yet does not explicitly address nanospecific risk assessment. Similar regulatory heterogeneity across Asia, Europe, and other developed regions complicates harmonization and market access. This review synthesizes current evidence on nanotechnology-enabled noninvasive tooth whitening, emphasizing nanoHAP and other nanowhitening systems, and compares safety, effectiveness, and regulatory trends in India, the broader Asian region, and developed countries. It identifies critical research gaps, including the need for long-term, India-specific clinical trials and nanoaware regulatory guidance, and outlines priorities for safe, context-appropriate integration of nanotechnology into esthetic dentistry.
Keywords- Nanotechnology in Dentistry, Nano-Hydroxyapatite (Nano-HAP), Enamel Remineralization, Esthetic Dentistry, Dentin Hypersensitivity.
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How to cite this article
@article{KhajuriaA2026,
author = {Atul Khajuria and Sukhmeet Kaur Bedi,},
title = {Nanotechnology-Enabled Non-Invasive Teeth Whitening: Safety, Efficacy, and Regulatory Perspectives with a Focus on India, Asia, and Developed Countries},
journal = {International Journal of Nanomaterials and Nanostructures},
year = {2026},
volume = {12},
number = {1},
issn = {2455-5584},
url = {https://journalspub.com/publication/uncategorized/article=25219}
}