We like to maintain and conserve of every single teeth but not all of the teeth can be saved. There are many reason we cannot conserve the teeth. Extensive caries or decayed teeth, gum disease, tooth fracture, and etc. can lead more serious problem if we keep the teeth in our mouth. It will develop to abscess, cyst, granuloma, or even serious infection that can threat our life. When we wait there are more disadvantage factors than the advantage factor exodontia or tooth extraction is needed.