I had temporary veneers fitted (plastic ones) & they look awful! There's a big hole on the front of one. Is this normal?(photo)

I would recommend returning to your dentist to have adjustments made to your temporaries so they are more cosmetic for you. The temporaries I make for my patients are pretty cosmetic, but not all temporaries are. Be sure you ask your dentist to let you see the permanent veneers in your mouth before having them bonded. This will let you see if there is anything that you would like to change. I hope this helps.  Feel free to click to save my name below, in case you have more questions in the future.

visit your cosmetic dentist. and discuss your concern. its my advice , tell your cosmetic dentist to put finals on yr teeth , check it once and if u r happy, than go of cementation. and if u r not happy , tell him for changes. remember, once cementation is done . no changes is possible.

As soon as the Temporary veneers were done and you did not like them you should have said something right away.  They should mimic the final veneer very closely. Immediately go back to them and share your concerns. They should fix it right away. Make sure you try on the final veneers before it is permanently cemented in place and let them know if you don't like something.  TI will be very hard to change anything after it is bonded in place permanently.