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a-

a-   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
17 words

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

abapical

abapical   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
10 words

Opposite to or directly away from the apex.

abarticulation

abarticulation   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
18 words

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

Abbé–Estlander operation

Abbé–Estlander operation   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
82 words

[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 ...

ABCDE approach

ABCDE approach   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
409 words
The method of assessment of critically ill patients and those suffering from cardiorespiratory arrest. A = Airway, B = Breathing, C = Circulation, D = Disability, E = Exposure. It provides ... More
abdomen

abdomen   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
37 words

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

abduction

abduction   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
18 words

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

aberrant

aberrant   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
21 words

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

abfraction

abfraction   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
99 words
Illustration(s):
1
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 ... More
ablation

ablation   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
27 words

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

abrasion

abrasion   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
126 words
Illustration(s):
1
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 ... More
abrasive

abrasive   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
81 words

A material used to smooth or roughen a softer material by mechanical wear. It may be delivered in a high pressure stream of air (...

abscess

abscess   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
225 words
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 ... More
absorbable gelatin(e) sponge

absorbable gelatin(e) sponge   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
23 words

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

absorbent

absorbent   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
18 words

Describing a material capable of taking up other substances by suction, e.g. an absorbent paper point.

absorption

absorption   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
26 words

The passage of one substance to another by penetration or solution. For example, the passage of liquids into the mucosa...

absorption layer

absorption layer   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
20 words

An amorphous zone on the dentine surface into which adhesive agents can flow. See also hybrid layer.

abuse

abuse   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
42 words

Any action which deliberately harms or injures another person, including inappropriate use of any substance, especially those that alter consciousness (e.g. ...

abut

abut   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
12 words

To touch or border upon. To have a common boundary.

abutment

abutment   Quick reference

A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
164 words
A tooth, tooth root, or implant used to support a fixed or removable prosthesis (bridge or partial denture). It may provide either the terminal support for a prosthesis or additional ... More

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