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][6][7][8]

Medical uses

Multi-unit abutments are used to align the prosthesis on a level restorative platform, adjust for variations in implant heights, and place the implant connection at the same level as or just below the gingival surface.

Terminology

Abutment (dentistry)
a supporting element fixed in the implant,[9] a prosthesis is directly attached to the abutment: a crown, multiple restoration or a splinted restoration of a complete dentition.
Multi-unit abutment
A multi-unit abutment is a type of abutment that allows for the connection of multiple implant fixtures to a single prosthesis. They can be angled or straight, and come in various sizes and shapes to fit different implant systems and clinical situations.[10]

References

  1. ↑ Resnik, Randolph (January 25, 2020). Misch's contemporary implant dentistry (4th ed.). Elsevier Health Sciences. p. 879. ISBN 9780323478267.
  2. ↑ Byrne, Gerard (June 3, 2014). Fundamentals of Implant Dentistry. Wiley. p. 168. ISBN 9781118274965.
  3. ↑ Drago, Carl (February 19, 2020). Implant Restorations. Wiley. p. 358. ISBN 9781119538158.
  4. ↑ K. Ho, Christopher C., ed. (October 5, 2021). Practical Procedures in Implant Dentistry. Wiley. p. 247. ISBN 9781119399186.
  5. ↑ Nazarian, Dr Ara (2022-02-18). "Predictable immediate guided implant placement and provisionalisation". Dental Tribune International. Retrieved 2023-03-14.
  6. ↑ "Zygoma implant multi-unit abutment: solve this puzzle?". OsseoNews. 2018-08-31. Retrieved 2023-04-04.
  7. ↑ "What are Multi-Unit Abutments? - Chicago Dental Implants". Teeth Chicago Dental Implants. 2020-05-23. Retrieved 2023-04-04.
  8. ↑ Yurij, Curatorial (2022-12-15). "Titanium. What Alloys Tooth Implants Are Made Of". uniqa.dental. Retrieved 2023-04-12.
  9. ↑ "Glossary of Implant Dentistry" (PDF). International Congress of Oral Implantologists. Retrieved 29 April 2023.
  10. ↑ Wu, Yu-Ling; Wu, Aaron Yu-Jen (2017-04-21). "A method of fabricating an accurate repositioning device for relocating multiple multiunit abutments". The Journal of Prosthetic Dentistry. 118 (4): 564–566. doi:10.1016/j.prosdent.2017.01.009. ISSN 0022-3913. PMID 28434683.
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