| occlusal position | The relationship of the mandible and maxillae when the jaws are closed and the teeth are in contact; it may or may not coincide with centric occlusion. (05 Mar 2000) |
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| occlusal pressure | Any force exerted upon the occlusal surfaces of teeth. Synonym: biting pressure. (05 Mar 2000) |
| occlusal radiograph | <dentistry> The only X-ray that is taken without an X-ray holder. The X-ray film for this procedure is shaped like a large biscuit and the patient is asked to bite on the X-ray film and the top of the X-ray machine is positioned over your nose for a maxillary occlusal X-ray or under your chin for a mandibular occlusal film. The X-ray displays the entire arch. (08 Jan 1998) |
| occlusal rest | A rigid extension of a removable partial denture onto the occlusal surface of a posterior tooth for support of the prosthesis. (05 Mar 2000) |
| occlusal rest bar | A minor connector used to attach an occlusal rest to a major part of a removable partial denture. (05 Mar 2000) |
| occlusal rim | Occluding surfaces built on temporary or permanent denture bases for the purpose of making maxillomandibular relation records and for arranging teeth. Synonym: bite rim, occlusal rim, record rim. (05 Mar 2000) |
| occlusal scheme | The form or design and arrangement of the occlusal and incisal units of a dentition or the teeth on a denture. Synonym: occlusal scheme. (05 Mar 2000) |
| occlusal splints | Rigid or flexible appliances that overlay the occlusal surfaces of the teeth. They are used to treat clenching and bruxism and their sequelae, and to provide temporary relief from muscle or temporomandibular joint pain. (12 Dec 1998) |
| occlusal surface | The surface of a tooth that occludes with or contacts an opposing surface of a tooth in the opposing jaw. Synonym: denture occlusal surface. (05 Mar 2000) |
| occlusal system | The form or design and arrangement of the occlusal and incisal units of a dentition or the teeth on a denture. Synonym: occlusal scheme. (05 Mar 2000) |
| occlusal table | The occlusal or grinding surfaces of the bicuspid and molar teeth. (05 Mar 2000) |
| occlusal vertical dimension | The vertical dimension of the face when the teeth or occlusion rims are in contact in centric occlusion; decrease in occlusal vertical dimension may result from modification of tooth form by attrition or grinding, drifting of teeth, or, in edentulous patients, by resorption of residual ridges; increase may result from modifications of tooth form, tooth position, height of occlusion rims, rebasing or relining, or occlusal splints. (05 Mar 2000) |
| occlusal wear | Attritional loss of substance on opposing occlusal units or surfaces. See: abrasion. (05 Mar 2000) |
| linguo-occlusal | Relating to the line of junction of the lingual and occlusal surfaces of a tooth. (05 Mar 2000) |
| androgenic zone | A transient adrenocortical zone present in some rodents at birth, most notably in mice, situated between the zona reticularis and the adrenal medulla; it degenerates in males with the secretion at puberty and in females during their first pregnancy; it slowly enlarges in unmated females after puberty and does not degenerate until middle age; the X zone appears to secrete no hormone. Synonym: androgenic zone. Misnomer for the foetal adrenal cortex of primates. Synonym: foetal reticularis. (05 Mar 2000) |