It s very common to have lighter shade teeth in front and darker shade in the back. This could be your natural color or could also be due to environmental, habitual or some other reasoning. For example, If you are using a whitening toothpaste and brushing the front teeth more aggressively than the posterior teeth, that would be a habitual reason why Your front teeth are lighter in shade. Although, it's going to be hard to determine the reason for this discrepancy in shade for as long as this is not the natural color of your teeth in office whitening might be a good solution for you.Pedram Sooferi DDS.
Sounds pretty series to me. From your symptoms I can guess that you might be needing a root canal. Definitely need to see a dentist and have it taken care of. The problem will only get worse.Pedram Sooferi, D.D.S.
