| appl | appliance; application, applied |
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| AA | 1) Aortic Arch(= Arcus Aortae)(= AA); ´ëµ¿¸Æ±Ã 2) Aplastic Anemia - Anemia |
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| AAS | Aarskog-Scott [syndrome]; acid aspiration syndrome; alcoholic abstinence syndrome; American Academy ... |
| AB-SAAP | autologous blood selective aortic arch perfusion |
| IAA | Interrupted aortic arch |
|---|---|
| IAA | Interruption of the aortic arch |
| ribbon arch appliance | An appliance consisting of a rectangular wire inserted into a specially designed bracket attached to the labial and buccal surfaces of the teeth. (05 Mar 2000) |
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| ribbon arch | A thin, ribbon-shaped, rectangular orthodontic arch wire applied to the dental arch's so that its widest dimension is parallel to the labial or buccal surfaces of the teeth. (05 Mar 2000) |
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| Reil's ribbon | A band of white fibres originating from the gracile and cuneate nuclei and decussating in the lower medulla; thence it passes upward through the centre of the medulla oblongata, close to the median raphe; on entering the pons it spreads out laterally to form a flat band ascending over the dorsal border of the pontine nuclei; in the mesencephalon it passes over the dorsal border of the substantia nigra and is displaced laterally by the red nucleus; passing medial to the medial geniculate body, the bundle enters and terminates in the ventral posterior nucleus of the thalamus. Throughout their course, the fibres retain a somatotopic order such that those originating from the gracile nucleus and representing the lower extremity lie lateral to those originating in the cuneate nucleus and representing the arm. The medial lemniscus conveys somatic-sensory information involved in tactile discrimination (two-point discrimination), position sense, and vibration sense. Synonym: lemniscus medialis, medial fillet, Reil's band, Reil's ribbon. (05 Mar 2000) |
| ribbon | 1. A fillet or narrow woven fabric, commonly of silk, used for trimming some part of a woman's attire, for badges, and other decorative purposes. 2. A narrow strip or shred; as, a steel or magnesium ribbon; sails torn to ribbons. 3. Same as Rib-band. 4. Driving reins. 5. A bearing similar to the bend, but only one eighth as wide. 6. A silver. The blue ribbon, and The red ribbon, are phrases often used to designate the British orders of the Garter and of the Bath, respectively, the badges of which are suspended by ribbons of these colours. See Blue ribbon, under Blue. Ribbon fish. A tapeworm. A nemertean. Origin: OE. Riban, OF. Riban, F. Ruban, probably of German origin; cf. D. Ringband collar, necklace, E. Ring circle, and band Alternative forms: riband, ribband. Source: Websters Dictionary (01 Mar 1998) |
| ribbon synapse | <biology, physiology> Ultrastructurally distinct type of synapse found in a variety of sensory receptor cells such as retinal photoreceptor cells, cochlear hair cells and vestibular organ receptors, as well as in a nonsensory neuron, the retinal bipolar cell. Unlike most neurons, these cells do not use regenerative action potentials but release transmitter in response to small graded potential changes. Ribbon synapses have different exocytotic machinery from conventional synapses in containing dense bars or ribbons anchored to the presynaptic membrane covered with a layer of synaptic vesices. The ribbons have been proposed to shuttle synaptic vesicles to exocytotic sites. (23 Aug 1998) |
| appliance | <dentistry> Anything the orthodontist attaches to your teeth to move your teeth or to change the shape of your jaw (05 Mar 2000) |
| Roger-Anderson pin fixation appliance | An appliance used in extraoral fixation of mandibular fractures and prognathic corrections in which pins placed in the bone segments are joined by metal connecting rods. See: external pin fixation. (05 Mar 2000) |
| craniofacial appliance | A device used to immobilise and/or reduce mandibular or midfacial fractures. See: fixation. (05 Mar 2000) |
| Hawley appliance | <dentistry> A removable wire and acrylic palatal appliance used to retain or stabilise the teeth in their new position following orthodontic tooth movement; with modifications it can be used to move teeth as an active orthodontic appliance. Synonym: Hawley appliance. (05 Mar 2000) |
| surgical appliance | A metal or plastic appliance constructed prior to surgery and used to immobilise or support mucosal, skin, bone, or bone marrow grafts during the postoperative phase. (05 Mar 2000) |
| intraoral fracture appliance | A metal or acrylic device attached to the teeth with wire or cement; used to immobilise fractures of the maxilla and mandible. (05 Mar 2000) |
| obturator appliance | An appliance used to obliterate congenital or acquired defects of the jaws and surrounding structures, usually made of acrylic or rubber. (05 Mar 2000) |
| orthodontic appliance | A mechanism for the application of pressure to the teeth and their supporting tissues to produce changes in the relationship of the teeth and/or the related osseous structures. (05 Mar 2000) |
| orthodontic appliance design | The planning, calculation, and creation of an apparatus for the purpose of correcting the placement or straightening of teeth. (12 Dec 1998) |
| edgewise appliance | A fixed, multibanded orthodontic appliance using an attachment bracket the slot of which receives a rectangular archwire horizontally, which gives precise control of tooth movement in all three planes of space. (05 Mar 2000) |
| extraoral fracture appliance | A device used for extraoral reduction and fixation of maxillary or mandibular fractures, in which pins, clamps, or screws interjoined with metal or acrylic connectors are used to align the fractured segments. See: external pin fixation. (05 Mar 2000) |
| ribbon arch appliance |
An appliance developed by EH Angle prior to the Edgewise appliance, using a rectangular wire in a vertical slot to gain multidirectional control. Bracket was inverted and used by PR Begg for his technique.
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