Zirconia bridge was only cemented to my implants, it broke in half. Is this dental implant malpractice?

when you perform a bridge over implants,90% of the cases need to be done with abutments that go screw retained, this will make a connection implant - crown. and all the structure will be attached with a metallic bar ,to give the strenght,and then its covered with zyrconia,so that way there si no way that you will brake it.there are many options and of course you can find solutions,to that,just get the type of implants,size and brand.and its avery simple thing to rehab,and if you search abroad you will get amazing results and pricing.