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Surface morphology changes in human enamel, dentin and cementum following bleaching: a scanning electron microscopy
M Zalkind1, J R Arwaz, A Goldman
1Department of Prosthodontics, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
Endodontics & Dental Traumatology
|April 1, 1996
Summary
Most bleaching agents cause tooth surface changes, with hydrogen peroxide and DentlBright affecting all dental tissues. Cementum showed the most significant alterations after treatment with hydrogen peroxide, DentlBright, Nu-Smile, and Opalescence.
Area of Science:
- Dentistry
- Dental Materials Science
- Biomaterials
Background:
- Tooth bleaching is a common cosmetic dental procedure.
- Various bleaching agents are available, including hydrogen peroxide and carbamide peroxide-based products.
- Understanding the effects of these agents on tooth structure is crucial for safe and effective use.
Purpose of the Study:
- To evaluate the morphological changes on the surface of human premolars after treatment with different bleaching agents.
- To compare the effects of various bleaching materials on different dental tissues (enamel, dentin, cementum).
Main Methods:
- Human premolars were extracted, sectioned, and cleaned.
- Teeth were divided into six experimental groups.
- Each group was treated with a specific bleaching agent: 30% hydrogen peroxide, 10% carbamide peroxide, sodium perborate, Nu-Smile, Opalescence, or DentlBright.
Main Results:
- Morphological changes were observed on the tooth surface following treatment with most bleaching agents.
- Hydrogen peroxide and DentlBright caused surface alterations in all dental tissues.
- Cementum exhibited more significant changes compared to other tissues when treated with hydrogen peroxide, DentlBright, Nu-Smile, and Opalescence.
Conclusions:
- Different bleaching agents induce varying degrees of morphological changes on tooth surfaces.
- Hydrogen peroxide and DentlBright demonstrate a broad impact across all dental tissues.
- Cementum appears to be particularly susceptible to surface alterations from common bleaching agents like hydrogen peroxide, DentlBright, Nu-Smile, and Opalescence.