New laser-matter interaction concept to enhance hard tissue cutting efficiency
| Autor: | Larry G. DeShazer, Ioana-Mihaela Rizoiu |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Laser ablation
Materials science Enamel paint Laser cutting medicine.medical_treatment Ablation Laser law.invention medicine.anatomical_structure stomatognathic system law visual_art Microscopy medicine visual_art.visual_art_medium Dentin Laser power scaling Composite material Biomedical engineering |
| Zdroj: | Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards. |
| DOI: | 10.1117/12.182949 |
| Popis: | Human enamel and dentin were cut using a 2.8 micrometers erbium laser beam in conjunction with water spray. Ablation rates of the order of 0.14 mm3/s were achieved for both tissues at 4 W average power. An ablation threshold of 0.28 W was determined for dentin when using the water spray. When above threshold, the volume of tissue ablated per joule was discovered to be nearly constant, not related to the average laser power. Comparative microscopy between tissue irradiated with and without water spray demonstrated a lack of thermal effects when the water spray was utilized. |
| Databáze: | OpenAIRE |
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