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[Basic considerations on the use of the Excimer laser in dentistry]
T Liesenhoff1, T Bende, H Lenz
1Abteilung für Mikromorphologie, Freie Universität Berlin.
Deutsche Zahnarztliche Zeitschrift
|January 1, 1990
Summary
Laser irradiation at 4-6 J/cm2 ablates hard tooth tissue, exposing natural structures without thermal damage. Surface morphology varies based on beam interaction with dentin tubules and enamel prisms.
Area of Science:
- Dental materials science
- Laser-tissue interactions
Context:
- Investigating laser applications in dentistry.
- Understanding hard tissue modification mechanisms.
Purpose:
- To evaluate the effects of specific laser energy densities on dental hard tissues.
- To characterize the surface morphology of enamel and dentin post-irradiation.
Summary:
- Scanning Electron Microscopy (SEM) studies demonstrated that laser irradiation within 4-6 J/cm2 energy density range effectively removes hard tooth structure via photoablation.
- This process exposes natural tissue structures without inducing thermal alterations.
- Surface morphology is dependent on the interaction angle with dentin tubules and enamel prisms.
- Optimal laser parameters (4-6 J/cm2, peripheral fading) prevented structural changes in deeper tissue layers.
Impact:
- Provides insights into precise laser ablation for dental procedures.
- Highlights the potential for controlled modification of tooth surfaces.
- Establishes optimal parameters for laser treatment to avoid collateral thermal damage.