Interesting that you bring up toothbrushes. Actually some company spent tons of money and time to come up with THE ULTIMATE shape for a toothbrush. They tried a

Interesting that you bring up toothbrushes. Actually some company spent tons of money and time to come up with THE ULTIMATE shape for a toothbrush. They tried all different shapes, twists, angles and grips. The result? Simple straight toothbrushes are the most ergonomic and effective shapes.