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a-

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 15 words.

Prefix denoting absence of, lacking, without; e.g. atoxic (not poisonous), abacterial (without bacteria).

abapical

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

Opposite to or directly away from the apex.

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abapical adj.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 10 words.

Opposite to or directly away from the *apex.

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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abarticulation n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 17 words.

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

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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Abbé–Estlander operation

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 79 words.

[R. Abbé (1851–1928), American surgeon; J. A. Estlander (1831–81), Finnish surgeon] A full thickness flap

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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ABCDE approach

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 412 words.

The method of assessment of critically ill patients and those suffering from cardiorespiratory arrest. A = Airway, B = Breathing,

abdomen n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 36 words.

That part of the body cavity below the chest and separated from it by the diaphragm. It contains a number

abdominal thrust

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 5 words.

abduction n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 18 words.

Movement away from the midline; e.g. the lateral rectus muscle is an abductor of the eye.

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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aberrant adj.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 21 words.

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

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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abfraction n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 88 words.

The loss of tooth structure in the *cervical region of the *crown of a tooth. Some research studies

ablation n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 27 words.

The removal or excision of a piece of tissue, usually by surgery. Surface ablation of the skin may be carried

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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abrasion n.

Edited by Robert Ireland.

in A Dictionary of Dentistry

January 2010; p ublished online January 2010 .

Reference Entry. Subjects: Dentistry. 127 words.

1. The non-bacterial loss of tooth tissue due to frictional wear by extrinsic agents. Common causes are *toothbrushing,

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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