Abstract:ObjectiveTo investigate the effect of dental dust collector on controlling air pollution in sandblasting room.MethodsBacterial sedimentation method and dust sampler monitoring method were adopted to monitor the air in a dental sandblasting room.The experimental group used dental dust collector to intervene during cleaning, control group was not taken intervention, the air colony forming unit and dust density before,during and after treatment were compared.ResultsBefore treatment, there were no significant differences in air bacterial count and dust density between two groups (［273.30±85.30］ CFU/m3 vs［265.30±90.30］CFU/m3,P＞0.05; ［0.47±0.03］ mg/m3 vs ［0.45±0.04］ mg/m3, P＞0.05)；during and after treatment, air bacterial count in experimental group were (512.60±99.30) CFU/m3 and （350.70±62.40）CFU/m3 respectively, dust density were (0.61±0.23) mg/m3 and (0.52±0.16) mg/m3 respectively, which were significantly lower than that of control group respectively(［918.90±135.20］CFU/m3,［488.50±85.20］CFU/m3,［3.26±0.35］mg/m3,［1.65±0.21］mg/m3)（P＜0.01 or P＜0.05）.ConclusionDental sandblasting cause air pollution seriously, dental dust collector can effectively remove pollutants， control the sources of pollution, and maintain the cleanliness of the air in dental clinic.