1 Add 1/2 cup sugar, the ginger, chicken broth, vinegar, soy sauce, sesame oil, and peanut oil; bring to a boil and cook for 3 minutes.  Dissolve 2 teaspoons of cornstarch into the water, and stir into the boiling sauce.
Well, the tooth can continue to decay, which could result in the loss of the tooth and possibly the need for a root canal. I would go ahead and get it filled. Not all fillings are silver. They do have fillings that are closer to natural tooth colors. You can tell your dentist that you don't want that ugly silver thing.
Once the pulp decays, you're on the road to tooth loss. Everyone around you may also find that your breath is pretty fierce. Ideally, though, you wouldn't let a cavity get to this point -- you'd see a dentist and take measures to prevent tooth loss. In that sense, you can stop a cavity from getting worse. However, some sources may suggest that you can treat a cavity through re-mineralization without a dentist's intervention.