Angle's classification

classification /clas·si·fi·ca·tion/ (klas″ĭ-fĭ-ka´shun) the systematic arrangement of similar entities on the basis of certain differing characteristics.

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adansonian classification  numerical taxonomy.

Angle's classification  a classification of dental malocclusion based on the mesiodistal position of the mandibular dental arch and teeth relative to the maxillary dental arch and teeth; see under malocclusion.

Bergey's classification  a system of classifying bacteria by Gram reaction, metabolism, and morphology.

Caldwell-Moloy classification  classification of female pelves as gynecoid, android, anthropoid, and platypelloid; see under pelvis.

FIGO classification  any of the classification systems established by the International Federation of Gynecology and Obstetrics for the staging of gynecological cancers.

Gell and Coombs classification  a classification of immune mechanisms of tissue injury, comprising four types: type I, immediate hypersensitivity reactions, mediated by interaction of IgE antibody and antigen and release of histamine and other mediators; type II, antibody-mediated hypersensitivity reactions, due to antibody-antigen interactions on cell surfaces; type III, immune complex, local or general inflammatory responses due to formation of circulating immune complexes and their deposition in tissues; and type IV cell-mediated hypersensitivity reactions, initiated by sensitized T lymphocytes either by release of lymphokines or by T-cell–mediated cytotoxicity.

Keith-Wagener-Barker classification  a classification of hypertension and arteriolosclerosis based on retinal changes.

Lancefield classification  the classification of hemolytic streptococci into groups on the basis of serologic action.

New York Heart Association (NYHA) classification  a functional and therapeutic classification for prescription of physical activity for cardiac patients.

Revised European American Lymphoma (REAL) Classification  a classification of lymphomas based on histologic criteria, dividing them into three main categories: B-cell neoplasms, T- or NK-cell neoplasms, and Hodgkin's disease.

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Angle's classification [ang´g'lz]

a classification of dental malocclusion based on mesiodistal (anteroposterior) position of the mandibular dental arch and teeth relative to the maxillary dental arch and teeth.

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classification,

n the systematic arrangement according to characteristics of groups or classes.

classification, Angle's,

n See Angle's classification of malocclusion (modified).

classification, Broders',

n See index, Broders'.

classification, cavity,

n See cavity, classification.

classification, Kennedy,

n See Kennedy classification.

classification of habits,

n a compilation of orofacial habits that may be a factor in the etiology of periodontal disease. Habit neuroses include lip biting, cheek biting, biting of foreign objects, and abnormal tongue pressure against the teeth. Occupational ones include thread biting, musician's habits, holding nails in the oral cavity, etc. Miscellaneous ones include thumb sucking, pipe smoking, incorrect toothbrushing habits, cracking nuts with the teeth, and oral cavity breathing.

classification of motion,

n a classification system that identifies the extent of involvement of the body in completing a dental motor task.

classification of partial dentures,

n grouping of partially edentulous situations based on various conditions (e.g., location of the edentulous space, location of remaining teeth, position of direct retainers, and ability of oral structures to support a partial denture).

classification of periodontal diseases,

n the division of periodontal diseases into: (1) gingival disease; (2) chronic periodontitis; (3) aggressive periodontitis; (4) periodontitis as a manifestation of a systemic disease; (5) necrotizing periodontal diseases; (6) abscesses of the periodontium; (7) periodontitis associated with endodontic lesions; and (8) development of acquired deformities and conditions.

classification of pockets,

n the division of periodontal pockets into two classes: (1) suprabony and (2) infrabony, according to the number of osseous walls (i.e., three osseous walls, two osseous walls, one osseous wall). See also pocket.