Method of preventing tooth decay by laser beam irradiation and chemical treatment
US4877401A · kind A · utility
54Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0606
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for preventing tooth decay comprising: (1) laser irradiation of the tooth's surface with a carbon dioxide laser (wavelength=10.6 microns) at 20 to 50 watts for 1 to 400 seconds, and (2) subsequent chemical treatment of the tooth with a chemical agent such as ethane-1-hydroxy-1, 1-diphosphonic acid at concentrations greater than about 0.00001 molar. The resulting tooth has a reduced dissolution rate in acid and increased resistivity to cavities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.