Yes, you are right. it is always better to save the natural tooth if it can be saved. You have to find out the cause of the mobility. If it is because of the gum problem and there is the bone loss then the gum treatment is needed and if the mobility is because of infection which can be because of decay, then root canal treatment is advised. You have to visit your dentist to find out the options. You can go for splinting also. For more info on root canal treatment you can visit the following link on our website......http://www.identalhub.com/articlecategory-root-canal-therapy-17.aspx