Objective      To investigate the temperature efficiency and time efficiency of the light-wave on the sterilization of the dental solid metal equipment.       Methods      Sterile mouth mirrors

tweezers and probes were artificially contaminated with different indicator bacteria and HBsAg antigen. Then these equipments were disinfected by the light-wave at different temperatures and for different time periods. The inactivation of the bacteria and the destruction of HBsAg antigen were measured with enrichment culture

enzyme-linked immunosorbent assay and Abbott laboratories test.       Results      Staphylococcus aureus and Pseudomonas aeruginosa were thoroughly killed after being disinfected by light-wave at 120 ℃ for 5 min

130 ℃ for 3 min

or 140 ℃ for 1 min.  Candida albicans was thoroughly killed after being disinfected by light-wave at 120 ℃ for 7 min

130 ℃ for 5 min

or 140 ℃ for 3 min. The black variant of Bacillus subtilis was thoroughly killed after being disinfected by light-wave at 120 ℃ for 9 min

130 ℃ for 7 min

or 140 ℃ for 5 min. The HBsAg antigen was destructed after being disinfected by light-wave at 120 ℃ for 7 min

130 ℃ for 5 min

or 140 ℃ for 3 min. And the oral natural bacteria are more likely to be inactivated than the black variant of Bacillus subtilis.       Conclusion      Light-wave achieves rapid sterilization of the dental solid metal equipments. In addition

the higher temperature

the shorter time

and the more efficiency if the equipment can withstand the higher temperature.