Angle's classification of malocclusion

(redirected from Class III)

Angle's classification of malocclusion (modified)

Etymology: Edward Hartley Angle, American orthodontist, 1855-1930
a classification of the various types of malocclusion. The classification is based on where the buccal groove of the mandibular first molar contacts the mesiobuccal cusp of the maxillary first molar: on the cusp (Class I, neutroclusion, or normal occlusion); distal to the cusp by at least the width of a premolar (Class II, distocclusion); or mesial to the cusp (Class III, mesiocclusion). Each class contains two or more types or divisions. See also classification of malocclusion.
enlarge picture
Angle's classification of malocclusion: Class I malocclusion
enlarge picture
Angle's classification of malocclusion: Class III malocclusion

Angle's classification of malocclusion (modified),

n.pr a classification of the different forms of malocclusion. See also malocclusion.
Class I,
n the normal anteroposterior relationship of the mandible to the maxillae. The mesiobuccal cusp of the permanent maxillary first molar occludes in the buccal groove of the permanent mandibular first molar.
Type I,
n.pr dentition in linguoversion.
Type II,
n.pr with narrow arches; labioversion of the maxillary anterior teeth and linguoversion of the mandibular anterior teeth.
Type III,
n.pr with linguoversion of the maxillary anterior teeth; crowded; lack of development in the proximal region.
Class II,
n.pr the posterior relationship of the mandible to the maxillae. The mesiobuccal cusp of the permanent maxillary first molar occludes mesial to the buccal groove of the permanent mandibular first molar.
Division 1,
n.pr with labioversion of the maxillary teeth.
Subdivision,
n.pr signifies a unilateral condition.
Division 2,
n.pr with linguoversion of the maxillary central incisor teeth.
Subdivision,
n.pr signifies a unilateral condition.
Class III,
n.pr the anterior relationship of the mandible to the maxillae, may have a subdivision. The mesiobuccal cusp of the permanent maxillary first molar occludes distal to the buccal groove of the permanent mandibular first molar.
Type I,
n.pr with good alignment generally but arch relationship abnormal.
Type II,
n.pr with good alignment of the maxillary anterior teeth but linguoversion of the mandibular anterior teeth.
Type III,
n.pr an underdeveloped maxillary arch; linguoversion of maxillary anterior teeth; good mandibular alignment.
References in classic literature ?
Of course all the boys went to school; and most of them got into Class III, but Slightly was put first into Class IV and then into Class V.
The study, led by researchers from the National Cancer Institute (NCI), part of the National Institutes of Health, found that people with class III (or extreme) obesity had a dramatic reduction in life expectancy compared with people of normal weight.
According to the study by researchers from the National Cancer Institute (NCI), people with class III obesity (35.
Regulations place devices into three classes, with class III including those with the greatest risk to patients.
Background & objectives: Expression of class III [beta]-tubulin represents newly discovered marker of resistance to taxol-based chemotherapy in a wide spectra of carcinomas.
Any time a drip forms enough to drop off your vehicle you have a Class III leak, a condition that makes most vehicles Non Mission Capable.
Bruce King refused to negotiate compacts required to make gambling legal, asserting that Class III (i.
Class II apartment building tax rates are expected to remain steady while Class III utilities will rise, no matter what the cap.
1060 and 338(b) regulations placed intangible assets other than goodwill and going concern value in Class III.
A Class III device is defined as one that may be used in supporting or sustaining human life, may be of substantial importance in preventing impairment of human health, or may present a potential unreasonable risk of injury.