Many of our patients wear down the sides of their teeth with a combination of excessive force, abrasive toothpastes, and stiff bristled toothbrushes.  A recent Scandinavian study simulated toothbrush abrasion on extracted teeth.  They found that the abrasiveness of the toothpaste had the most significant effect on how fast teeth erode.  Stiffer bristled toothbrushes had a lesser effect.  Our advice still remains the same...