Have you considered putting dentures?

Dentures are mobile prosthetic works for filling missing teeth. Dentures, partial or total, is a solution to replace several teeth or all teeth.

Skeletal dentures

Skeletal prostheses are made from a tough alloy, cast in the laboratory and are very comfortable and resistant. Skeletal dentures can have a special attaching systems (clasps, staple, telescopes) and thus are very well fixed, being removed form the mouth only for sanitation.

If the special systems are checked once a year and damaged silicone sockets are replaced, they can last evan for 30 years.