| posterior palatal seal | The seal at the posterior border of a denture. See: posterior palatal seal area. Synonym: palatal seal, post dam, postdam, postpalatal seal. (05 Mar 2000) |
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| posterior palatal seal area | The soft tissues along the junction of the hard and soft palates on which pressure within the physiologic limits of the tissues can be applied by a denture to aid in the retention of the denture. Synonym: post dam area, postpalatal seal area. (05 Mar 2000) |
| arch bar | Any one of several types of wires, bar's, or splints conforming to the arch of the teeth, extending from one side of the arch to the other and located labially, or lingually; used for the treatment of jaw fractures and/or stabilization of injured teeth. (05 Mar 2000) |
| bar | 1. A piece of wood, metal, or other material, long in proportion to its breadth or thickness, used as a lever and for various other purposes, but especially for a hindrance, obstruction, or fastening; as, the bars of a fence or gate; the bar of a door. "Thou shalt make bars of shittim wood." (Ex. Xxvi. 26) 2. An indefinite quantity of some substance, so shaped as to be long in proportion to its breadth and thickness; as, a bar of gold or of lead; a bar of soap. 3. Anything which obstructs, hinders, or prevents; an obstruction; a barrier. "Must I new bars to my own joy create?" (Dryden) 4. A bank of sand, gravel, or other matter, especially. at the mouth of a river or harbor, obstructing navigation. 5. Any railing that divides a room, or office, or hall of assembly, in order to reserve a space for those having special privileges; as, the bar of the House of Commons. 6. The railing that incloses the place which counsel occupy in courts of justice. Hence, the phrase at the bar of the court signifies in open court. The place in court where prisoners are stationed for arraignment, trial, or sentence. The whole body of lawyers licensed in a court or district; the legal profession. A special plea constituting a sufficient answer to plaintiff's action. 7. Any tribunal; as, the bar of public opinion; the bar of God. 8. A barrier or counter, over which liquors and food are passed to customers; hence, the portion of the room behind the counter where liquors for sale are kept. 9. An ordinary, like a fess but narrower, occupying only one fifth part of the field. 10. A broad shaft, or band, or stripe; as, a bar of light; a bar of colour. 11. A vertical line across the staff. Bars divide the staff into spaces which represent measures, and are themselves called measures. A double bar marks the end of a strain or main division of a movement, or of a whole piece of music; in psalmody, it marks the end of a line of poetry. The term bar is very often loosely used for measure, i.e, for such length of music, or of silence, as is included between one bar and the next; as, a passage of eight bars; two bars' rest. 12. <veterinary> The space between the tusks and grinders in the upper jaw of a horse, in which the bit is placed. The part of the crust of a horse's hoof which is bent inwards towards the frog at the heel on each side, and extends into the center of the sole. 13. <chemical> A drilling or tamping rod. A vein or dike crossing a lode. 14. A gatehouse of a castle or fortified town. A slender strip of wood which divides and supports the glass of a window; a sash bar. Bar shoe, a trial before all the judges of one the superior courts of Westminster, or before a quorum representing the full court. Origin: OE. Barre, F. Barre, fr. LL. Barra, W. Bar the branch of a tree, bar, baren branch, Gael. & Ir. Barra bar. 91. Source: Websters Dictionary (01 Mar 1998) |
| bar clasp | A clasp whose arms are bar-type extensions from major connectors or from within the denture base; the arms pass adjacent to the soft tissues and approach the point of contact on the tooth in a gingivo-occlusal direction, a clasp consisting of two or more separate arms located opposite to each other on the tooth; the bar arms arise from the framework or from a connector and may traverse the soft tissue; one arm (bar), the retentive arm, usually terminates in the infrabulge (gingival convergence) area of the tooth; the other, the reciprocal arm, usually terminates on the suprabulge (occlusal convergence) area. Synonym: Roach clasp. (05 Mar 2000) |
| bar clasp arm | A clasp arm which has its origin in the denture base or major connector; it consists of the arm which traverses but does not contact the gingival structures, and a terminal end which approaches its contact with the tooth in a gingivo-occlusal direction. (05 Mar 2000) |
| bar clip attachments | Fixed bar joints or rigid bar units used for splinting abutments with removable sleeves or clips within the partial denture for supporting and/or retaining the prosthesis. Synonym: bar clip attachments. (05 Mar 2000) |
| bar joint denture | A complete denture that is supported by both soft tissue and natural teeth that have been altered so as to permit the denture to fit over them. The altered teeth may have been fitted with short or long copings, locking devices, or connecting bars. Synonym: bar joint denture, hybrid prosthesis, overdenture, telescopic denture. (05 Mar 2000) |
| bar of bladder | A fold of mucous membrane extending from the orifice of the ureter of one side to that of the other side. Synonym: plica interureterica, bar of bladder, Mercier's bar, plica ureterica, torus uretericus, ureteric fold. (05 Mar 2000) |
| bar screen | A screen made of parallel bars set 3/4" to 2" apart used to filter out large objects. (05 Dec 1998) |
| bar-sleeve attachments | Fixed bar joints or rigid bar units used for splinting abutments with removable sleeves or clips within the partial denture for supporting and/or retaining the prosthesis. Synonym: bar clip attachments. (05 Mar 2000) |
| Passavant's bar | A prominence on the posterior wall of the naso-pharynx formed by contraction of the superior constrictor of the pharynx during swallowing. Synonym: Passavant's bar, Passavant's pad, Passavant's ridge. (05 Mar 2000) |
| median bar of Mercier | A prominent band of fibromuscular tissue involving the interureteric ridge or neck of the urinary bladder, occasionally resulting in urinary obstruction. (05 Mar 2000) |
| Mercier's bar | A fold of mucous membrane extending from the orifice of the ureter of one side to that of the other side. Synonym: plica interureterica, bar of bladder, Mercier's bar, plica ureterica, torus uretericus, ureteric fold. (05 Mar 2000) |
| continuous bar retainer | A metal bar, usually resting on lingual surfaces of teeth, to aid in their stabilization and to act as indirect retainer's. Synonym: continuous clasp. (05 Mar 2000) |