Resin teeth containing inorganic fillers have high hardness, but their dyeing resistance is obviously reduced. Why is it important to contain inorganic fillers in the stain resistance of dentures? Resin teeth containing inorganic fillers are equivalent to pure resin materials containing some small particles, and there are many gaps around these small particles, especially on the occlusal surface after molars. After small particles are exposed, on the one hand, the grinding position is not polished, on the other hand, the grinding position will soon be colored.
When the resin material contains inorganic filler, the hardness is greatly improved, but the wear resistance and dyeing resistance are obviously reduced. Therefore, if we blindly pursue high hardness, we will inevitably lose the demand for wear resistance and dyeing resistance.