If you have a cavity that is too deep, a traditional filling may not suffice. In some cases, it will be tried, but you will still experience pain when eating or high sensitivity to cold. In these cases, a root canal in Chicago could be the next-best option for you. While some people think that removing the tooth is the best route to take, it’s always best to keep your original teeth. Such treatment is virtually painless and will leave you feeling better than before. Because of modern technology and anesthesia, you aren’t likely to have any pain at all during or after the procedure.