1993 Volume 14 Issue Supplement Pages 83-86
Laser-hard tissue interaction has been investigated. We studied the irradiation effect of KrF and ArF excimer lasers on teeth enamel and cow thighbone as a hard tissue. The ratio of Ca atoms to P atoms at irradiated surfaces of both samples was measured by using Electron Probe Micro Analysis (EPMA). The ratio Ca/P increased for KrF laser irradiated surface of teeth enamel and for ArF laser irradiated surface of cow thighbone. No change was observed for another case. The results indicate that single photon absorption at the bone surface and two photon absorption at the teeth enamel surface take place for both KrF and ArF laser irradiation.
We tried to improve a bio-compatibility of alumina surface by KrF laser implantation method. Ca and P atoms were implanted into alumina.
