The lower portion of my molar broke off ehile I was eating a hard fruit. This tooth has a large filling put in when I was many years younger. The large filling is exposed to one side, while the other is still held and protected by the remain molar. One dentist said I merely need a crown. Another said an in/onlay, possibly a crown - only possible to tell once filling is entirely removed, only then can the tooth structure be assessed. I'm not sure whose opinion is more sound, if any!