Dentures are not the only option to replace missing teeth, but it is one of the most effective yet cost-efficient methods. Besides dentures, other options to replace missing teeth include:
Bridges
Bridges replace teeth by utilizing crowns on the teeth next to the gap and attaching a fake tooth to the crowns. They can only replace one or two missing teeth in a row. They are cemented in place and, therefore, considered a more "permanent" option.
Implants
Implants require a metal post to be inserted into either your upper or lower jaw bone. They can replace a single tooth or multiple teeth by attaching a bridge to the implant. They simulate natural teeth the best out of all the options, but are the most expensive form of tooth replacement.