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Cephalometric predictors of long-term stability in the early treatment of class III malocclusion

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dc.contributor.authorMoon, Young-Min-
dc.contributor.authorAhn, Sug-Joon-
dc.contributor.authorChang, Young-Il-
dc.date.accessioned2010-07-12T03:40:14Z-
dc.date.available2010-07-12T03:40:14Z-
dc.date.issued2005-09-
dc.identifier.citationAngle Orthodontist 2005;75(5):747-753en
dc.identifier.issn0003-3219-
dc.identifier.urihttps://hdl.handle.net/10371/68578-
dc.description.abstractThe aim of this study was to examine the differences in the early craniofacial morphology
of Class III malocclusions. Lateral cephalograms of 45 subjects with a Class III malocclusion
and an anterior crossbite in the deciduous or mixed dentition were examined before treatment,
after treatment, and during the long-term retention stage. The anterior crossbites of all
patients were corrected after a series of orthodontic treatments. After a mean follow-up period of
5.7 years, all the subjects were reevaluated and divided into three groups according to the final
occlusal status: good, fair, and poor occlusal stability. Twenty cephalometric variables on the
pretreatment lateral cephalograms were analyzed by one-way analysis of variance and discriminant
analysis to identify the key determinants for discriminating among the three groups. Among
the 20 variables, 11 showed statistical significance. Generally, the subjects with a smaller gonial
angle and a more hypodivergent skeletal pattern had good prognosis after the early treatment of
Class III malocclusion. When the AB to mandibular plane angle and N-perpendicular to point A
were selected in discriminant analysis, the AB to mandibular plane angle was the most significant
variable. Discriminant analysis showed a relatively high degree of correct classifications of the
patients with early Class III malocclusion. In particular, discriminant analysis showed the highest
accuracy (93.3%) when predicting a poor prognosis.
en
dc.description.sponsorshipThis study was supported by a grant from the Korea Health 21
R&D Project, Ministry of Health & Welfare, Republic of Korea (03-
PJ1-PG1-CH09-0001).
en
dc.language.isoenen
dc.publisherAngle Orthodontisten
dc.subjectClass III malocclusionen
dc.subjectPrognosisen
dc.subjectDiscriminant analysisen
dc.titleCephalometric predictors of long-term stability in the early treatment of class III malocclusionen
dc.typeArticleen
dc.contributor.AlternativeAuthor문영민-
dc.contributor.AlternativeAuthor안석준-
dc.contributor.AlternativeAuthor장영일-
Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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