Ort: From 2 Different Sources
An abbreviation for oral rehydration therapy. (See also rehydration therapy.)
ortho- A prefix meaning normal, correct, or straight, as in orthopaedics, a branch of surgery concerned with correcting disorders of the bones and joints.
orthodontic appliances Fixed or removable devices, commonly known as braces, worn to correct malocclusion, or to reposition overcrowded or buck teeth. Usually fitted during childhood and adolescence, they move teeth using sustained gentle pressure. A fixed appliance has brackets attached to the teeth through which an arch wire is threaded and tightened to exert pressure. These are usually kept in place for about a year, after which time a retainer plate may be needed to hold the teeth in place until tooth and jaw growth has finished.
Removable appliances, consisting of a plastic plate with attachments that anchor over the back teeth, are used when only one or a few teeth need correcting. They apply force by means of springs, wire bows, screws, or rubber bands fitted to the plate.
see oral rehydration therapy.
Orthodontics is the branch of dentistry concerned with the prevention and treatment of dental irregularities and malocclusion.... orthodontics
A form of di?culty in breathing so severe that the patient cannot bear to lie down, but must sit or stand up. As a rule, it occurs only in serious affections of the heart or lungs.... orthopnoea
An operation to correct deformity of the jaw and the severe malocclusion that is invariably associated with it. The bones of the jaw are repositioned under general anaesthesia, and often require splinting (see splinting, dental) until they heal.... orthognathic surgery
Techniques used mainly in children to measure and evaluate squint, including eye exercises, assessment of monocular and binocular vision, and measures to combat amblyopia.... orthoptics
Use of appliances to support or correct weakened or deformed joints.... orthotics
(Latin) From the garden Ortensiah, Ortensea, Ortenseah, Ortense, Ortenze, Ortenzia, Ortenzea, Ortensiana, Ortensie, Ortensi, Ortensy, Ortensey, Ortensee, Ortenzi, Ortenzie, Ortenzee... ortensia
The examination and treatment by exercises of squints and their sequelae (see EYE, DISORDERS OF).... orthoptic treatment
(Teutonic) Resembling a serpent Ortrud, Ortrude, Ortrouda, Ortroude, Ortroud... ortruda
(Greek) In mythology, an island where Artemis and Apollo were born Ortegia, Ortigia... ortygia
An appliance worn to support part of the body or hold it in a fixed position. It may be used to correct or halt the development of a deformity, to aid mobility, or to relieve pain. (See also caliper splint; corset; splint.)... brace, orthopaedic
A soft foam or stiffened device that is worn to treat pain or instability of the neck.... collar, orthopaedic
combining form denoting 1. straight. Example: orthograde (having straight posture). 2. normal. Example: orthocrasia (normal reaction to drugs).... ortho
adj. describing or relating to a tissue specimen that stains normally.... orthochromatic
an appliance used to move teeth as part of orthodontic treatment. A fixed appliance is fitted to the teeth by stainless steel bands or brackets that hold a special archwire, to perform complex tooth movements; it is used by dentists with specialist training (orthodontists). A removable appliance is a dental plate with appropriate retainers and springs to perform simple tooth movements; it is removed from the mouth for cleaning by the patient.... orthodontic appliance
n. the use of contact lenses designed to reshape the cornea in the treatment of refractive errors, such as myopia (short sight).... orthokeratology
n. the condition of complete balance between the alignment of the two eyes, such that perfect alignment is maintained even when one eye is covered. This theoretically normal state is in fact rarely seen, since in most people there is a minimal tendency for the eyes to deviate (see heterophoria).... orthophoria
n. see amblyoscope.... orthoptoscope
n. (pl. orthoses) a surgical appliance that exerts external forces on part of the body to support joints or correct deformity. —orthotic adj.... orthosis
adj. relating to the upright position of the body: used when describing this posture or a condition caused by it. See hypotension.... orthostatic
transplantation of a donor organ or tissue (usually the liver) into a recipient at the site where the recipient’s organ has been removed. In contrast, heterotopic transplantation involves the preservation of the recipient’s organ in its natural site and the addition of the donor organ at another site.... orthotopic transplantation
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