stress-bearing area

stress-bearing area,

the portion of the oral structures that is available to support a denture. Also called basal seat area, denture-bearing area.

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area,

n region.

area, apical,

n See base, apical.

area, basal seat,

n (denture-bearing area, denture-supporting area, stress-bearing area, stress-supporting area), the portion of the oral structures available to support a denture.

area, contact,

n See point, contact.

area, denture-bearing,

n See area, basal seat.

area, denture-supporting,

n See area, basal seat.

area, impression,

n the surface of the oral structures recorded in an impression.

area, pear-shaped,

n See pad, retromolar.

area, post dam,

n See area, posterior palatal seal.

area, posterior palatal seal,

n the soft tissues along the junction of the hard and soft palates on which compression, within the physiologic limits of the tissues, can be applied by a denture to aid in its retention.

area, postpalatal seal

n See area, posterior palatal seal.

area, pressure,

n an area of excessive displacement of soft tissue by a prosthesis.

area, recipient,

n the portion of the body on which a skin, bone, tooth, or other graft is placed.

area, relief,

n the portion of the surface of the oral cavity under prosthesis on which pressures are reduced or eliminated.

area, rest (rest seat),

n the prepared surface of a tooth or fixed restoration into which the rest fits, giving support to a removable partial denture.

area, rugae

n (rugae zone), that portion of the hard palate in which rugae are found.

area, saddle,

n See area, basal seat.

area, stress-bearing,

n See area, basal seat.

area, stress-supporting,

n See area, basal seat.

area, supporting,

n the areas of the maxillary and mandibular edentulous ridges best suited to carry the forces of mastication when the dentures are in use. See also area, basal seat.

area, work,

n the entire space in which the dental hygienist moves and works while treating a patient. This includes the instrument tray and dental chair, unit, and light.

Arenaviridae

n a grouping of enveloped, helix-shaped RNA viruses implicated in a relatively benign form of meningitis (lymphoctyic choriomeningitis; severe encephalitic forms do occur rarely) that affects young adults.

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stress,

n 1. a force induced by or resisting an external force; measured in terms of force per unit area.
2. the force of energy directed against a tissue structure or against the function of tissue as the result of injury and trauma associated with fracture, burn, infection, surgical procedure, pharmacologic action, or anxiety states. The response to stress involves local metabolic function, the hormonal activity of the endocrine system regulated by the pituitary gland, and the autonomic and central nervous systems. The stress phenomenon is often associated with the general adaptation syndrome.
3. in prosthetic dentistry, forcibly exerted pressure (e.g., the pressure of the maxillary teeth against the mandibular teeth or the pressure contact of a distorted removable partial denture on the supporting teeth or ridge structures).

stress, axial,

n excessive force applied vertically to the teeth and their periodontium.

stress, bone in,

n the responses of bony structures to applied force. With application of excessive pressure stimuli to bone, adaptation may occur by the formation of thicker and more numerous trabeculae. If tissue components cannot compensate for excessive stress, bone resorption will occur.

stress, buccolingual,

n an excessive pressure exerted against teeth and their attachment apparatus from a buccal or lingual aspect.

stress, compressive,

n the internal induced force that opposes shortening of the material in a direction parallel to the direction of the stress.

stress control,

n See control, stress.

stress, damage to restorations by,

n a mechanical property that pertains to the capacity of substances used for restorative and preventive applications to loosen in response to continual pressure over time. See also strain.

stress response,

n the physiologic changes that occur as a result of threatening situations, including rapid breathing, increased heart rate, and increased perspiration. Also known as the “fight or flight” response.

stress, shearing,

n the internal induced force that opposes the sliding of one plane of the material on the adjacent plane in a direction parallel to the stress.

stress, tensile,

n the internal induced force that opposes elongation of a material in a direction parallel to the direction of stress.

stress-bearing area,

n See area, basal seat.