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At-home bleaching system: effects on enamel and cementum
Journal of Esthetic Dentistry
|March 1, 1991
Summary
Vital bleaching of teeth for 30 days caused noticeable shade changes. However, only phosphoric acid gel etching, not bleaching, altered the enamel-cementum surface morphology, as seen under scanning electron microscopy.
Area of Science:
- Dental materials science
- Biomaterials
- Surface morphology analysis
Background:
- Dental bleaching is a common cosmetic procedure.
- Understanding its effects on tooth structure is crucial.
- Enamel-cementum integrity is vital for tooth health.
Purpose of the Study:
- To investigate the impact of vital bleaching on tooth surface morphology.
- To compare bleaching effects with phosphoric acid etching.
- To assess changes in enamel-cementum surface structure.
Main Methods:
- Scanning electron microscopy (SEM) was used for surface analysis.
- Five groups were studied: control, vital bleached (5, 15, 30 days), and acid-etched.
- Morphological changes were documented using SEM imaging.
Main Results:
- No significant surface morphology alterations were observed in vital bleached teeth.
- Phosphoric acid gel etching produced distinct etching patterns on the surface.
- Shade changes were observed in teeth vital bleached for 30 days.
Conclusions:
- Vital bleaching does not significantly alter enamel-cementum surface morphology.
- Phosphoric acid etching induces surface changes, unlike vital bleaching.
- Longer vital bleaching durations may lead to aesthetic shade changes without structural damage.