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2. Fixed prosthodontics - Wikipedia

   en.wikipedia.org/wiki/Fixed_prosthodontics

   The cement-retained restorations ensure maximum aesthetics but have two downsides. One, the restoration is cemented to an abutment that is screw retained. If the abutment screw becomes loose the final restoration cannot be removed without destroying it in many instances. This results in a remake and increased cost.

3. Dental implant - Wikipedia

   en.wikipedia.org/wiki/Dental_implant

   While the complication can occur, there does not appear to be any additional peri-implantitis in cement-retained crowns compared to screw-retained crowns overall. [75] In compound implants (two stage implants), between the actual implant and the superstructure (abutment) are gaps and cavities into which bacteria can penetrate from the oral cavity.

4. Multi-unit abutment - Wikipedia

   en.wikipedia.org/wiki/Multi-unit_abutment

   A multi-unit abutment (MUA) is an abutment most commonly used with dental implants in "All-on-Four" protocols. [1] [2] They are designed for screw-retained group restorations, [3] which are often used in combination with angled dental implants [4] and whole arch replacements, as well as screw fixation of bridges made of zirconium or metal-ceramic group restorations to the implant.

5. Crown (dental restoration) - Wikipedia

   en.wikipedia.org/wiki/Crown_(dental_restoration)

   In dentistry, a crown or a dental cap is a type of dental restoration that completely caps or encircles a tooth or dental implant. A crown may be needed when a large dental cavity threatens the health of a tooth. Some dentists will also finish root canal treatment by covering the exposed tooth with a crown.

6. Dental prosthesis - Wikipedia

   en.wikipedia.org/wiki/Dental_prosthesis

   Permanently fixed dental prostheses use dental adhesive or screws, to attach to teeth or dental implants. Removal prostheses may use friction against parallel hard surfaces and undercuts of adjacent teeth or dental implants, suction using the mucous retention (with or without aid from denture adhesives), and by exploiting the surrounding ...

7. All-on-4 - Wikipedia

   en.wikipedia.org/wiki/All-on-4

   The All-on-4 treatment concept is a prosthodontic procedure (i.e replacement of missing teeth) that provides a permanent, screw-retained, same-day replacement for the entire upper and / or lower set of teeth with a bridge or denture. The procedure is best for patients with significant tooth loss or decay, and for people whose bone loss in the ...