Applied anatomy of mb-2 root canal orifice of maxillary first permanent molar with operating microscope;

The operating microscope in the treatment of endodontics;

The development of a coupling device of laser knifeand operating microscope;

This paper introduces the characteristics and the methods of making a sterilized fixer of the objective lens of surgical microscope.

Design of the digital imaging system of the surgical operation microscope on PACS;