(redirected from occlusal)
Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.
Related to occlusal: occlusal adjustment


The relationship of the masticatory surfaces of the maxillary teeth to the masticatory surfaces of the mandibular teeth when the jaws are closed.
(computer science)
In computer vision, the obstruction of a view.
The retention of undissolved gas in a solid during solidification.
A closing or shutting up.
Adhesion of gas or liquid on a solid mass, or the trapping of a gas or liquid within a mass.
The deficit in muscular tension when two afferent nerves that share certain motor neurons in the central nervous system are stimulated simultaneously, as compared to the sum of tensions when the two nerves are stimulated separately.



the absorption of a substance from a gaseous medium by solids or melts. During occlusion, gases are absorbed by the entire volume of the absorbent rather than by the surface layer. In this sense, occlusion is similar to absorption, which is the dissolution of gases in liquids.

The most common type of occlusion involves the absorption of gases by metals; for example, hydrogen is occluded by metals of Group VIII of the periodic table of elements. At room temperature, one volume of iridium absorbs more than 800 volumes of hydrogen, and one volume of palladium absorbs more than 700 volumes of hydrogen. The occluded gas interacts with the metal to form a solid solution; sometimes a part of the gas combines with the metal to yield other chemical compounds, for example, hydrides and nitrides.



(also bite), the relationship between the surfaces of the upper and lower teeth when in contact. The various forms of occlusion are established only when all the permanent teeth are present. With normal occlusion, each upper tooth, except the central incisors and the wisdom teeth, must touch the corresponding bottom tooth and the tooth behind it when the jaws are in contact. The sagittal surface passes between the central incisors of the upper and lower jaws.

There are four types of physiological occlusion. With orthognathous occlusion, the front teeth of the upper jaw cover the corresponding teeth of the lower jaw. Biprognathous occlusion is similar but with a more pronounced slant forward of the upper and lower teeth and of the alveolar processes. With a straight bite, the front teeth close on the edges of the incisors, and with an opisthognathous bite, the front teeth of both upper and lower jaws are inclined backward.

Pathological occlusion, which includes overbite, decreases the chewing efficiency of the teeth. It may be a congenital anomaly of development of the dentomaxillary system or a result of tooth removal or jaw disease or injury.


Gavrilov, E. I., and I. M. Al’shits. Ortopedicheskaia stomatologiia. Moscow, 1970.
Kurliandskii, V. Iu. Rukovodstvo k prakticheskim zaniatiiam po ortopedicheskoi stomatologii, 3rd ed. Moscow, 1973.


occluded front

occluded frontclick for a larger image
Fronts formed by the merging of cold and warm fronts. If a cold front overtakes a warm front, the result would be an occluded front. Also known as a frontal occlusion or an occlusion. See also front.
References in periodicals archive ?
It is easy to position for both occlusal and contrast photographs.
The occlusal surfaces show pitting, scratching and enamel chipping of antemortem origin, indicating the intense use of the teeth.
As one of the game-changing products selected by the IDT Editorial Advisory Board, the Implant bite post is set to provide a seamless occlusal solution for those working with dental implants.
Many studies have tested the performance of diagnostic methods mainly used for occlusal surfaces.
Clenching was simulated by the action of resultant force vectors of four bilateral masticatory muscles, responsible for the elevation of the mandible, which was assumed as static occlusal load.
Dental plaque is present at all 198 patients with maladapted periodontal fixed prosthetic restorations and strengthens the action with the iatrogenic prosthetic factors (maladapted cervical edge, occlusal, proximal, the incorrect relation of the bridge-body to the crest, irritation given by the material used in the restoration of the prostheses).
Prosthesis is present in all 198 patients with fixed prosthetic restorations maladapted periodontal and adds to iatrogenic prosthetic factors (cervical, occlusal, proximal marginal unadjusted, incorrect report of the bridge with the crest, material used in prosthesis).
All of the clinical periodontal and related endodontic restorative-prosthetic, implantological, and occlusal cases presented in the book are drawn from his own practice.
The first 25 consecutive patients with high occlusal plane angulation, dysfunction, and pain who were treated with temporomandibular joint (TMJ) total joint prostheses and simultaneous maxillomandibular counterclockwise rotation were evaluated before surgery (T1), immediately after surgery (T2), and at the longest follow-up (T3) for surgical movements and long-term stability.
The occlusal surface of the tooth is opposite the end where the root is located (apical end).
0]) significantly correlate with the number of occlusal surfaces (Lorscheider et al.
Lake Zurich, IL 800/323-8029) have shown promise in the diagnosis of occlusal caries.