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Development of an optical manipulator of the yttrium aluminum garnet laser for dental use


Journal of Dental Health (Tokyo) 30(1): 12-16
Development of an optical manipulator of the yttrium aluminum garnet laser for dental use
Experimental results of a laser impaction onto tooth enamel in vitro for the purpose of caries prevention have been reported using extracted human or animal teeth, but few in vivo experiments have been reported using extracted human or animal teeth, but few in vivo experiments have been reported in the literature because of the lacking of a suitable device for guiding the laser beam. Thus, the development of an optical manipulator for the laser is necessary for its clinical use. A useful optical manipulator for dental use of an Nd-YAG [yttrium-aluminum-garnet] laser is described. The optical manipulator enables the passage of a normal and a giant pulse beam of the YAG laser. The device consists of 4 arms for beam passage, 8 articulating joints for reflection, and terminal hand-piece, which can also be operated with a foot-switch. Each elbow contains a prism reflector and allows 360.degree. C rotation at each joint, thus providing up to 6 degrees of freedom in beam positioning. Transmission through the optical systems is more than 65%. Directing the laser beam onto a given area of oral tissue is simple and it can be precisely controlled by handling of the terminal hand-piece with the guide beam of a He-Ne laser.

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Accession: 005132509



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