Full upper replacements
The upper set of teeth is replaced with implants. Missing tooth roots are replaced with implants, which are covered under the gum line. A healing period of up to six months allows the implants to take. After healing, the implants are uncovered and extensions are attached. Replacement teeth are affixed to the implants and extensions. In some cases, full upper replacements can be removed.
Full lower replacement
The lower set of teeth is replaced with implants. Full lower replacement usually only uses four to six implants (near the front), which are used to anchor a denture. This obviates the need for denture adhesive.