Category: A
-
Aplastic
Without development; not forming. Nondevelopment of an organ or part. Unable to develop new cells or tissue.
-
Aplasia
Incomplete development of an organ or tissue. Congenital absence may be characteristic. Lack of development of an organ or tissue, or of the cellular products from an organ or tissue. The failure of an organ to develop resulting from congenital factors or disease in infancy. A lack of growth of tissue. The absence of an…
-
Apicoectomy
Intentional surgical excision of the apical end of a tooth root. In dentistry, the surgical removal of the apex of the tooth. The surgical removal of the tip of the root in the tooth and the infected tissue surrounding it. This procedure is performed by an endodontist, a dentist specially trained to treat the nerves…
-
Apically positioned flap
A flap sutured in a direction apical to its original presurgical position.
-
Apical abscess
A localized collection of pus and inflamed tissue located at or around the apical end of a tooth. An abscess in the socket around the root of a tooth. An abscess in the bone around the apex of a tooth. An acute abscess is extremely painful and the commonest cause of a swollen face. A…
-
Apical
Referring to, or in the direction of, a root apex. Of the apex; also used in the sense of distal (which is preferred). At the tip of a branch or stem. Belonging to the apex. Relating to the tip of the plant itself or of a plant part. Situated at the top or tip of…
-
Aphtha (plural: aphthae)
An ulcer of the oral mucous membrane occurring exclusively on movable tissue.
-
Aphonia
Loss or absence of voice as a result of the failure of the vocal cords to vibrate properly. Loss of the voice resulting from disease, injury to the vocal cords, or various psychological causes, such as hysteria. Inability to produce normal speech sounds; may be due to either organic disease or psychological causes. Loss or…
-
Aphasia
Defect or loss of the power of expression by writing, speech or signs, or of comprehending written or spoken language due to disease of or injury to the brain. Loss of a previously possessed facility of language comprehension or production that cannot be explained by sensory or motor defects or by diffuse cerebral dysfunction; it…
-
Aphagia
Inability to swallow; abstention from eating. Refusal to eat brought about by a lesion of the lateral hypothalamus. A condition in which a person is unable to swallow. Inability to swallow, due to pain or paralysis, as in myasthenia gravis.