My 3 year old crown split, and the warranty has expired. Insurance won't cover. Should I look for a new dentist?

My 3 year old crown split in half. My dentist will do a new crown with zirconia and accepts no responsibility for this crown (he applied) and also gave me the provisio that my insurance probably will not pay out as it has only been 3 years. I asked his policy and he said he warrants up to one year. Is it time to seek out a new dentist? I go faithfully every six months and take very good care of my teeth!