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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.
[26] in addition it can resist crack propagation in the core material; however, cracks often occur in the veneering material leading to its fracture whether in the tooth-supported or implant-supported bridges. [27] [28] Reports found that the 3×3 mm designed connectors in zirconia bridges increased the strength to resist fracture by 20%. [29] [30]
In dentistry, an abutment is a connecting element. [1] This is used in the context of a fixed bridge (the "abutment teeth" referring to the teeth supporting the bridge), partial removable dentures (the "abutment teeth" referring to the teeth supporting the partial) and in implants (used to attach a crown, bridge, or removable denture to the dental implant fixture).
Dental implant, 3D illustration. A dental implant (also known as an endosseous implant or fixture) is a prosthesis that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, or facial prosthesis or to act as an orthodontic anchor.
Prosthodontics (also called prosthetic dentistry) – Dentures, bridges and the restoration of implants. Some prosthodontists super-specialize in maxillofacial prosthetics , which is the discipline originally concerned with the rehabilitation of patients with congenital facial and oral defects such as cleft lip and palate or patients born with ...
Permanent prosthetics can include fixed dental bridges, implant-supported dentures, or full-arch implant-supported prostheses. They are typically made from durable materials such as ceramic, zirconia, or metal alloys, and are designed to closely resemble natural teeth in both appearance and function.
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One major advantage of the resin-retained bridge over a conventional bridge is the failure mode is likely to be debonding of the retainer. In conventional bridges, the failure mode is likely to be complete fracture of the abutment tooth with difficult-to-manage sequelae, possibly requiring root canal treatment. With a resin-retained bridge the ...