dentinal dysplasia

dentinal dysplasia

n.

See dentinogenesis imperfecta.

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dentinal

(den´tnl),
adj pertaining to the dentin.

dentinal dysplasia,

n See dysplasia, dentinal.

dentinal fluid,

n the tissue fluid in the dentinal tubule that surrounds the odontoblastic process.

dentinal permeability,

n the degree to which fluids can pass through intact dentin.

dentinal tubule,

n a microscopic tube within dentin that spreads outward from the tooth's center. It carries dentinal fluid.

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dysplasia (displā´zh),

n 1. a developmental abnormality. See also dysplasia, dentinal.
n 2. the reversible, regressive alteration in adult cells, seen as alterations in their size, shape, orientation, and functions; leads to change in tissue architecture and is related to chronic inflammation or protracted irritation.
3. an abnormality of development.
n 4. a disharmony between component parts.

dysplasia, anteroposterior (anteroposterior facial dysplasia),

n an abnormal anteroposterior relationship of the maxillae and mandible to each other or to the cranial base.

dysplasia, cementoosseous,

n a fairly common benign fibroosseous lesion (BFOL) that appears in the jawbone. They appear on radiographic examinations as highly visible areas of mixed radiolucent/radiopaque bone. The three categories of cementoosseous dysplasia are focal, periapical, and florid. Such lesions are easily diagnosed with radiographic examination and do not require a biopsy, which can damage adjacent bone tissue.

dysplasia, cleidocranial

(klī´dōkrā´-nēl),
n (Sainton's disease), a familial disease or congenital disorder characterized by failure to form, or retarded formation of, the clavicles; delayed closure of the sutures and fontanels; and delayed eruption of teeth, with formation of supernumerary teeth. It is characterized by underdevelopment of the maxillae, agenesis or aplasia of the clavicle, abnormalities in other skeletal bones and muscles, and irregularities of the dentition. The syndrome may be mutational or transmitted on an autosomal dominant basis.

dysplasia, craniofacial,

n a disharmony between the cranium and the face.

dysplasia, dentinal,

n a genetic disturbance of the dentin characterized by early calcification of the pulp chambers and root canals and by root resorption. It is differentiated from dentinogenesis imperfecta by the latter's characteristics of attrition and relative freedom from root resorption.

dysplasia, dentofacial,

n a disharmony between teeth and bones of the face (e.g., crowding and spacing).

dysplasia, ectodermal

n a group of diseases characterized by failure to form two or more ectodermal derivatives. Sweat glands and teeth may be missing (anhidrosis and hypodontia, respectively), and there may be scant hair, faulty fingernails, and malformation of the iris.

dysplasia, enamel,

n a development abnormality of enamel tissue.

dysplasia, fibroosseous,

n See dysplasia, fibrous.

dysplasia, fibrous (fibroosseous dysplasia),

n a metabolic disturbance characterized by replacement of the bone marrow with fibrous tissue and slow, progressive remolding and enlargement of the bone. It may be monostotic (limited to one bone) or polyostotic (present in many bones). McCune-Albright syndrome shows polyostotic fibrous dysplasia and other symptoms. See also syndrome, McCune-Albright.

dysplasia, focal osseous,

n See fibroma, periapical.

dysplasia, maxillomandibular

n a disharmony between one jaw and the other.

(os´ēs),
n a chronic reaction of the bone to injury characterized by replacement of the bone marrow with fibrous connective tissue, unilateral enlargement of the maxillae or mandible, and characteristic radiographic findings. It is similar or identical to monostotic fibrous dysplasia and ossifying fibroma.

dysplasia, polyostotic fibrous

(pol´ēostot´ik fīb´rs),
n the disease of fibrous dysplasia occurring in more than one bone. See also dysplasia, fibrous; osteofibroma; and syndrome, Albright's.