About 12 years ago DH's dentist encouraged him to get implants. The ballpark price for what was suggested was roughly the same as the cost of a nice new car. He got a second opinion from his sister's dentist and was told that there was about a 30% failure rate for the type of work he needed, it would be painful, and the final results wouldn't make a lot of change in the appearance of his mouth -- he had two partial plates that were really well made, and he was very happy with them. He didn't get the implants.
If you question the recommendation, go for a second opinion.
If you question the recommendation, go for a second opinion.