Is it normal to grind down a porcelain crown?
My dentist knocked off my 4 year old porcelain crown, put it back incorrectly. The next day ground it down to adjust it to fit right again. Now it broke. Is this normal practice
My dentist knocked off my 4 year old porcelain crown, put it back incorrectly. The next day ground it down to adjust it to fit right again. Now it broke. Is this normal practice