retention form

retention form,

the provision made in a prepared tooth cavity to hold in place a restoration and to prevent its displacement.

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form,

n the configuration, shape, or particular appearance of anything.

form, acquaintance,

n a registration sheet for new patients on which data (e.g., the patient's name and address) are recorded and that contains a statement of the policies of the specific dental professional's office or clinic and the responsibilities of the office or clinic to the patient.

form, anatomic,

n the natural shape of a part.

form, anatomic charting,

n one of three types of manually recorded dental documentation, features a graphic template displaying a representation of each tooth, as well as the roots and gingival tissues. Design provides for note taking associated with each tooth. The form becomes part of the patient's legal health records and is useful for planning patient care and ascertaining legal questions regarding treatment, and is relied upon for patient identification in the event of an emergency. See also form, examination.

form, arch,

n the shape of the dental arch. See also arch, dental.

form, convenience,

n the modifications necessary, beyond basic outline form, to facilitate proper instrumentation for the preparation of the cavity or insertion of the restorative material; also the placing of starting points or slight undercuts to retain the first portions of restorative material while succeeding portions are placed.

Anatomic charting form.

form, examination,

n the written documentation recording the thorough assessment of the oral cavity and surrounding structures. The form should include patient history and descriptions of observed abnormalities of visible characteristics. Also called
record form.

Geographic charting form.

form, face,

n the outline form of the face from an anterior frontal view.

form, functional,

n the shape that permits optimal performance.

form, geographic charting,

n one of three types of manually recorded dental documentation, describes each tooth by either a number or a letter within a quadrant. The gingival tissues and roots of the teeth are not included, making this chart unsuitable for periodontal assessment.

form, message,

n a checklist form, by means of which dental office staff can quickly make a record of telephone communications for the dental staff to look at later.

form, occlusal,

n the form of the occlusal surface of a tooth, a row of teeth, or dentition.

form, outline,

n the shape of the area of the tooth surface included within the cavosurface margins of a prepared cavity.

form, posterior tooth,

n the distinguishing contours of the occlusal surface of the various posterior teeth.

form, registration,

n a form used to gather personal (nonprofessional) data about a patient.

form, resistance,

n the shape given to a prepared cavity to enable the restoration and remaining tooth structure to withstand masticatory stress.

form, retention,

n the provision made in a cavity preparation to prevent displacement of the restoration.

form, root,

n the shape of the root of the tooth. It is capable of being modified by such factors as resorption and cemental apposition.

form, tooth,

n the characteristics of the curves, lines, angles, and contours of various teeth that permit their identification and differentiation.

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retention (rēten´shn),

n 1. power to retain; capacity for retaining; the inherent property of a restoration to maintain its position without displacement under stress; results from close adaptation of the restoration to the prepared form of the tooth, usually aided by cement.
n 2. term relating to the provision in cavity preparation for preventing displacement of a restoration. Retention supplements resistance form and is specifically created to resist any lateral or tipping force that may be brought against the restoration during and after its insertion.
n 3. resistance of a denture to removal in a direction opposite that of its insertion; the quality inherent in the denture that resists the force of gravity, adhesiveness of foods, and forces associated with the opening of the jaws.
n 4. the period of treatment during which the individual wears an appliance to maintain the teeth in the desired position.

retention arm,

n See arm, retention.

retention, circumferential,

n frictional resistance to displacement derived from completely veneering the exposed tooth surface.

retention, denture,

n 1. the means by which dentures are held in position in the oral cavity; the maintenance of a denture in its position in the oral cavity; the resistance to the movement of a denture from its basal seat in a direction opposite to that in which it was inserted.
n 2. the resistance of a denture to vertical movement in the occlusal direction from its basal seat.

retention, direct,

n retention obtained in a removable partial denture by the use of attachments or clasps that resist removal from abutment teeth.

retention form,

n See form, retention.

retention, indirect,

n retention obtained in a removable partial denture through the use of indirect retainers.

retention, partial denture,

n the fixation of a fixed partial denture by means of crowns, inlays, or other retainers.

retention, pin,

n See pin, retention.

retention, pinhole,

n one or more small holes, 2 to 3 mm in depth, placed in suitable areas of a cavity preparation parallel with the general line of draft to provide or supplement resistance and retention form.

retention, radicular,

n retention derived from projections of metal into the root canals of pulpless teeth.

retention, removable partial denture,

n the resistance to movement of a removable partial denture from its supporting structures, gained by the use of direct and indirect retainers or other attachments.

retention terminal,

n See clasp, circumferential arm; clasp, circumferential, arm retentive.