One of the more common events that could occur if a missing tooth is not replaced is drifting or movement of the adjacent and / or opposing teeth. Adjacent teeth move into the space of the missing tooth and the opposing teeth could move upwards or downwards to the space of the missing tooth. This could potentially affect one’s chewing function and the overall occlusal balance which can potentially damage the jaw joints and possibly cause headaches and migraines. Also, when a tooth is not replaced, the underlying bone could shrink in height and width which could limit replacement options in the future.