Safety of laser use under the dental microscope
Hidetoshi Saegusa dds
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorSatoshi Watanabe dds
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorTomoo Anjo dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorArata Ebihara dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorHideaki Suda dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorHidetoshi Saegusa dds
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorSatoshi Watanabe dds
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorTomoo Anjo dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorArata Ebihara dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorHideaki Suda dds, phd
Pulp Biology and Endodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Search for more papers by this authorAbstract
The aim of this study was to investigate the safety of laser use under the dental microscope. Nd:YAG, Er:YAG and diode lasers were used. The end of the tips was positioned at a distance of 5 cm from the objective lens of a dental microscope. Each eye protector was made into a flat disc, which was fixed on the lens of the microscope. The filters were placed in front of the objective lens or behind the eye lens. Transmitted energy through the microscope with or without the filters was measured. No transmitted laser energy was detected when using matched eye protectors. Mismatched eye protectors were not effective for shutting out laser energy, especially for Nd:YAG and diode lasers. None or very little laser energy was detected through the microscope even without any laser filter. Matched filters shut out all laser energy irrespective of their positions.
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