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

Opposite to or directly away from the *apex.

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

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

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

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

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

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

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

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

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

A material used to smooth or roughen a softer material by mechanical wear. It may be delivered in a high

A localized accumulation of *pus in a cavity caused by tissue breakdown as a result of infection or foreign