I had the nerve deleted from the lower six tooth, a post will be installed. The fifth was deleted itself half a year ago. All the other teeth are still with nerves. My dentist says, I need to crown that tooth. But there exist a lot of techiques to do that e.g. ceramics, metal, false teeth attachement whatever. Could you please suggest what is the best option, taking into consideration the fact, that my teeth are prone to decay.