For years the best solutions for missing teeth were bridges, removable partial or full dentures.
Removable teeth, no matter how well made, do not feel or function like natural teeth. Historically fixed bridges came as close as possible to the feel of natural teeth. However, this necessitates "cutting down" and crowning natural healthy teeth to support the bridge.
Some people can wear full dentures without fit problems, but it is not uncommon for a denture wearer to live with pain and irritation of the gums or have difficulty eating or speaking. Many denture wearers are anxious about whether or not their denture is going to slip and cause embarrassment.
When several teeth are missing, a removable partial denture may provide the support needed to fill in the spaces. Partial dentures usually attach to natural teeth with unsightly clasps and hooks. These very obvious attachments can cause undue stress on the existing natural teeth and promote tooth decay.