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abapical

Overview page. Subjects: Earth Sciences and Geography — Dentistry.

Opposite to or directly away from the apex.

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abarticulation

Overview page. Subjects: Dentistry.

The displacement or dislocation of a bone from its normal position (e.g. the temporomandibular joint).

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Abbé flap

Overview page. Subjects: Dentistry — Plastic and Reconstructive Surgery.

[R. Abbé (1851–1928), American surgeon; J. A. Estlander (1831–81), Finnish surgeon] A full thickness flap of tissue taken from the middle portion of usually the lower lip and transferred to...

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ABCDE

Overview page. Subjects: Dentistry — Sports and Exercise Medicine.

A mnemonic for a step-by-step assessment of an athlete who collapses on the field of play. A = Airway and cervical spine (ensure that the airway is clear; suspect a cervical spine injury if...

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aberrant

Overview page. Subjects: Dentistry.

Deviating from the normal. Usually applied to a blood vessel or nerve that fails to follow its normal course.

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abfraction

Overview page. Subjects: Dentistry.

The loss of tooth structure in the cervical region of the crown of a tooth. Some research studies suggest that this is owing to flexural forces applying an excessive biomechanical loading...

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abrasion

Overview page. Subjects: Dentistry.

1. The non-bacterial loss of tooth tissue due to frictional wear by extrinsic agents. Common causes are toothbrushing, particularly with abrasive pastes, pipe smoking, and...

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abrasive

Overview page. Subjects: Dentistry.

A material used to smooth or roughen a softer material by mechanical wear. It may be delivered in a high pressure stream of air (air abrasion) or by adhesion to strips, discs, wheels, or...

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abscess

Overview page. Subjects: Dentistry.

A localized accumulation of pus in a cavity caused by tissue breakdown as a result of infection or foreign materials. It is a tissue defence reaction to prevent the spread of infection to...

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absorbable gelatin(e) sponge

Overview page. Subjects: Dentistry.

A material applied topically to aid haemostasis, usually following a dental extraction. It provides a structure for clot formation.

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