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A scanning electron microscopic study of different caries removal techniques on human dentin
A Rüya Yazici1, Gül Ozgünaltay, Berrin Dayangaç
1Hacettepe University. muharrem.yazici@isbank.net.tr
Operative Dentistry
|July 18, 2002
Summary
Different caries removal methods significantly alter dentin topography. Sono-abrasion effectively cleared smear layers, exposing dentinal tubules, unlike other techniques evaluated by scanning electron microscopy (SEM).
Area of Science:
- Dentistry
- Materials Science
- Biomaterials
Background:
- Dental caries removal is crucial for cavity preparation.
- The topography of dentin after caries removal impacts bonding and sealing.
- Residual smear layer can affect restorative material adhesion.
Purpose of the Study:
- To compare the effects of various caries removal techniques on human dentin surface topography.
- To evaluate the presence and extent of smear layer formation after different removal methods.
- To assess dentinal tubule patency following each technique.
Main Methods:
- Scanning electron microscopy (SEM) was used for high-resolution imaging.
- Thirty-six human carious molars were divided into six groups.
- Techniques included hand excavation, bur, air-abrasion, laser, chemomechanical, and sono-abrasion.
Main Results:
- SEM revealed distinct topographical differences among techniques.
- Hand excavation, bur excavation, and air-abrasion left residual smear layers.
- Sono-abrasion completely removed the smear layer, exposing patent dentinal tubules.
Conclusions:
- Caries removal technique significantly influences dentin surface morphology.
- Sono-abrasion appears most effective in removing smear layer and opening tubules.
- Dentin topography post-caries removal has implications for clinical restorative procedures.