Month: January 2020
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Acellular dermal allograft
Allogenic skin graft, derived from a human cadaver, consisting of a thin split‐thickness of dermis, devoid of cellular content following a tissue preparation process.
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Acellular
Devoid of cells. Not containing cells; not having a cell structure. The term “acellular” refers to the absence of cells and is commonly utilized to describe pertussis (whooping cough) vaccines that contain specific components of the pertussis bacteria cell rather than the entire cell itself.
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Accretion
An accumulation of plaque, calculus, or material alba on teeth or dental implants. An increase in size by external addition, intussusception. A gradual increase in size, as through growth or external addition. Abnormal joining of parts that are normally separate. Addition of new material, resulting in growth; accumulation. Addition to an object of the substance…
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Accessory ostium
Occasional opening of the maxillary sinus either into the infundibulum or directly in the wall of the middle meatus.
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Access hole
Opening in a replacement tooth’s occlusal or lingual surface of an implant‐retained prosthesis that provides entrance for abutment or prosthesis screw placement or removal.
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Abutment selection
A step in the prosthodontic treatment whereby a decision is made regarding the type of abutment to be used for the restoration based on dental implant angulation, interarch space, soft tissue (mucosal) height, planned prosthesis, occlusal factors (e.g., opposing dentition, parafunction), esthetics, and phonetic considerations.
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Abutment screw
A threaded fastener used to connect an abutment to a dental implant. It is usually torqued to a final seating position, or single‐piece implant component with a threaded apical portion that can be connected directly to the implant. No additional screw is required to connect and secure the abutment component, or that component which secures…
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Abutment post
That component of a dental implant abutment which extends into the internal structure of a dental implant and is used to provide retention and/or stability to the dental implant abutment.
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Abutment mount
Prefabricated device, usually packaged with an abutment, used for the transfer of an abutment to a dental implant intraorally.
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Abutment‐level impression
The impression of an abutment either directly, using conventional impression techniques, or indirectly, using an abutment impression coping.