公开(公告)号：CA2102884A1

公开(公告)日：1994-09-05

申请号：CA2102884

申请日：1993-11-10

Applicant: IBM

Inventor： WYNNE JAMES J ,  JACOBS JASON M

IPC: A61C3/02 ,  A61B17/00 ,  A61B17/24 ,  A61B18/00 ,  A61B18/20 ,  A61B18/22 ,  A61C1/00 ,  B23K26/03 ,  A61C17/00

Abstract: DENTAL PROCEDURES AND APPARATUS USING ULTRAVIOLET RADIATION An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage to healthy enamel, dentin or other pulp structures.