My dentist has referred me to another dentist t do a root canal on tooth #18.  I have tossed around the idea of just having it pulled but was told the tooth above it would start getting long and longer with time if there was not tooth beneath it.  Is this true and how long would that take for the tooth the do that?
Hello have read your query. Yes that's true. If opposing tooth is not present den the tooth ll try to move to fill that place or until any resistance is reached. This is called physiological migration of teeth. And if u extract your molar your opposing molar ll not contribute in mastication also. But in case of third molar if you don't want to go for act you can get it extracted. Hope this ans helpsRegards