Which procedure involves applying an entirely new hard acrylic base to a denture?

Which procedure involves applying an entirely new hard acrylic base to a denture?

• A. Hard Reline
• B. Impression Materials
• C. Rebase
• D. 5-7 years

Answer: (C)

Replacing the entire base of a denture with fresh hard acrylic while keeping the teeth in their current positions is called a rebase. This restores the fit and stability of the denture by creating a new base surface, without remaking or altering the arrangement of the teeth. It’s different from a hard reline, which adds material to the tissue-facing surface to improve fit but does not replace the whole base. Impression materials are used to capture the mouth’s shape, not to replace the denture base, and the 5-7 years option is just a distractor. A rebase is chosen when the base is worn, ill-fitting, or deteriorated while the teeth and occlusion remain acceptable.

Replacing the entire base of a denture with fresh hard acrylic while keeping the teeth in their current positions is called a rebase. This restores the fit and stability of the denture by creating a new base surface, without remaking or altering the arrangement of the teeth. It’s different from a hard reline, which adds material to the tissue-facing surface to improve fit but does not replace the whole base. Impression materials are used to capture the mouth’s shape, not to replace the denture base, and the 5-7 years option is just a distractor. A rebase is chosen when the base is worn, ill-fitting, or deteriorated while the teeth and occlusion remain acceptable.