Abstract
To improve sensitivity of dental caries detection by laser-induced breakdown spectroscopy (LIBS) analysis, it is proposed to utilize emission peaks in the ultraviolet. We newly focused on zinc whose emission peaks exist in ultraviolet because zinc exists at high concentration in the outer layer of enamel. It was shown that by using ratios between heights of an emission peak of Zn and that of Ca, the detection sensitivity and stability are largely improved. It was also shown that early caries are differentiated from healthy part by properly setting a threshold in the detected ratios. The proposed caries detection system can be applied to dental laser systems such as ones based on Er:YAG-lasers. When ablating early caries part by laser light, the system notices the dentist that the ablation of caries part is finished. We also show the intensity of emission peaks of zinc decreased with ablation with Er:YAG laser light.
| Original language | English |
|---|---|
| Title of host publication | Clinical and Biomedical Spectroscopy and Imaging IV |
| Publisher | SPIE |
| Volume | 9537 |
| ISBN (Electronic) | 9781628417029 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
| Event | Clinical and Biomedical Spectroscopy and Imaging IV - Munich, Germany Duration: 2015 Jun 22 → 2015 Jun 24 |
Other
| Other | Clinical and Biomedical Spectroscopy and Imaging IV |
|---|---|
| Country/Territory | Germany |
| City | Munich |
| Period | 15/6/22 → 15/6/24 |
Keywords
- dental caries detection
- hollow optical fiber
- Laser-induced breakdown spectroscopy
- ultraviolet spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Atomic and Molecular Physics, and Optics
- Radiology Nuclear Medicine and imaging