作者检查了1004名深井作业工人,年龄为20～50岁。他们接触职业性有害物质和环境,如煤粉尘、二氧化硅、二氧化碳、高温和潮湿等。采掘作业时戴用滤尘面罩。又检查对照组219名非矿工,他们均未接触类似的职业性有害物。研究结果表明,1004名受检者牙齿重度磨损有750人,占74.7±1.37%。业己确定 The author examined 1004 deep-well workers, aged 20 to 50 years. They are exposed to occupational hazards and the environment, such as coal dust, silica, carbon dioxide, heat and moisture. Wear dust mask when mining operations. Another 219 non-miners in the control group were examined, and none of them had any exposure to similar occupational hazards. The results show that, 1004 subjects suffered severe tooth wear 750, accounting for 74.7 ± 1.37%. Industry has been established