| 摘要 |
An improved laser apparatus (1) for periodontal treatment comprising a surgical laser and a handpiece (2) for directing a focussed beam of laser light on to tissue within a periodontal pocket. The improvement comprises a protective shield at the end of the handpiece (2) shaped and dimensioned for insertion into a periodontal pocket and displaceable from a first position preventing the passage of the laser beam to a second position allowing the laser beam to pass. Preferably, the protective shield includes two prongs (17, 18) located at the end of the handpiece (2) and capable of relative lateral displacement thereby providing the effect of an improved laser scalpel. |
