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Surface morphological changes in human enamel following bleaching: an in vitro scanning electron microscopic study
A G Rajesh1, L M Ranganath, K S Prem Kumar
1Department of Conservative Dentistry and Endodontics RKDF Dental College and Research Centre, Hoshangabad Bhopal, Madhya Pradesh, India. denticsdentalcare@gmail.com
The Journal of Contemporary Dental Practice
|August 25, 2012
Summary
Scanning electron microscopy revealed no significant enamel changes after bleaching with McInnes solutions or carbamide peroxide. Bleaching agent concentration and time influence enamel surface morphology.
Area of Science:
- Dental materials science
- Biomaterials engineering
Background:
- Dental bleaching agents are widely used for aesthetic purposes.
- Understanding their effects on tooth enamel is crucial for clinical safety and efficacy.
Purpose of the Study:
- To evaluate morphological and structural enamel changes induced by specific bleaching agents using scanning electron microscopy (SEM).
- To assess the impact of different time intervals on these changes.
Main Methods:
- Human central incisors were treated with old McInnes solution, modified McInnes solution, or 10% carbamide peroxide.
- Samples were exposed to bleaching agents for various durations (15, 30, 60 minutes, 24, and 30 hours).
- Enamel surface morphology was examined using scanning electron microscopy (SEM) at 2000x and 10,000x magnification.
Main Results:
- No significant etching or surface morphology changes were observed in the enamel after treatment.
- The study found no indication of adverse effects on enamel structure under SEM.
Conclusions:
- The evaluated bleaching agents did not cause significant morphological alterations in dental enamel.
- Enamel alterations are dependent on the concentration and duration of bleaching agent exposure.
