i have had a chipped tooth (half broken) for 10 years now. However i have notted when i brush too often i tend to get a pimple or may be a rash inside my nose just where the middle bone starts above the lips. The chipped teeth is the one of the fron 2 teeth. SO you can say that i gennerally have the rash (may be 2-3mm) just above the teeth in the nose. is it due to infection being caused due to brushing too much over the chipped teeth?