Did the Dentist not suggest a denture - if he dose'nt fancy the plastic type, he could go for a metal (titanium) denture.
Depending on what size and how many teeth are needed, it could cost from around �500.00. This type of denture fits much better (I have had my top one for 35 years now).
Dentists nowdays don't seem to favour 'bridges' much, they tend to always suggest 'implants' which are around �2,500 each tooth !!!!
When he has had his teeth removed and the healing process is finished, I would suggest he find himself a Dental Technican (these are people who make false teeth, crowns, bridges etc) for the actual Dentists. They sometimes have a better understanding of 'replacement' teeth than the dentist.
Good Luck
Denise