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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).
Components such as Palatal Finger Springs, Buccal Canine Retractor, Z-Spring, T-Spring, Coffin Spring, Active Labial Bows (Mill's Bow or Roberts retractor), Screws and Elastics are all considered to be active components of the removable functional appliances. If a spring is moving one tooth it is made of 0.5mm thick stainless steel wire.
Diplôme d'études supérieures spécialisées (French pronunciation: [diplom detyd sypeʁjœʁ spesjalize], DESS) was an old diploma in France, which is no longer awarded.It completed a fifth year of higher education aimed at professional practice.
A crown (the dental prosthesis) is then connected to the abutment with dental cement, a small screw, or fused with the abutment as one piece during fabrication. [16]: 211–232 Dental implants, in the same way, can also be used to retain a multiple tooth dental prosthesis either in the form of a fixed bridge or removable dentures.
A dental prosthesis is an intraoral (inside the mouth) prosthesis used to restore (reconstruct) intraoral defects such as missing teeth, missing parts of teeth, and missing soft or hard structures of the jaw and palate. [1] Prosthodontics is the dental specialty that focuses on dental prostheses.
Emerson C. Angell was the first person to publish a paper about palatal expansion in 1860 in Dental Cosmos. He placed a screw between the maxillary premolars of a 14-year-old girl for two weeks. When she returned, he observed expansion in her upper arch. In 1877, Walter Coffin developed the Coffin Spring for the purpose of arch expansion.