There are different types of dentures. They can be worn on the upper jaw, lower jaw, or both at the same time. If you want to learn about dentures then read the full info here.
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Types of Dentures:-
Complete Dentures: Complete dentures (sometimes called full dentures) are installed when all of your natural teeth are missing.
Partial dentures: required if only a few natural teeth are missing. To secure partial dentures, brackets or nails are often included that extend from the dentures and enclose the remaining natural teeth.
Large dentures: Large dentures are a type of denture that covers the natural roots of the teeth that are located in the jawbone. If you leave the roots in place, the bone will be preserved and the prosthesis is effectively given more "grip."
Immediate dentures: Dentures are placed in the mouth immediately after tooth extraction. This means that during the healing of the gums, a person should not be without teeth. If the gum is judged to have "settled", new dentures are made.
Copying Prostheses: When a person finds a particular set of prostheses satisfactory, copies of them can be made. Often, small changes are made to improve the fit of the prosthesis.
Retained prosthesis for implants: A dental implant is basically a titanium metal screw that is attached to a socket drilled in the jawbone. Implants can be used to hold or "hold" dentures. In such cases, special fasteners to the inner surface of the prosthesis (such as pliers, buttons, or magnets) are used to connect the implant.