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KMID : 0361919940240020395
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Korean Journal of Orthodontics
1994 Volume.24 No. 2 p.395 ~ p.404
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A Study on the Antero-Posterior Morphology of the Upper Face in Angle's Class III Malocclusion Patients
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Abstract
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To find out the antero-posterior morphology of the upper face in Angle's class Ⅲmalocclusion patients. 90 patients, adults in Hellman's Dental age, were used as samples and following results were obtained after the relative comparision of
antero-posterior relationship of upper facial structures between Angle's class I malocclusion patients and Angle's class Ⅲmalocclusion patients and of antero-posterior size of upper facial structures to horizontal and vertical structures in each
patients.
1. After comparison of the distance from PMV line to anterior margin of axillary sinus and cheek, which determines the antero-posterior position of the upper face, upper face in Angle's class Ⅲpatients are underdeveloped relative to Angle's
class
I
patients. The distance between orbitale and anterior margin of maxillary sinus were greater in Angle's class I patients. Which implies thart the upper face in Angle's class Ⅲ are depressed.
2. Antero-posterior dimension of anterior cranial base from PMV line and vertical dimension of upper face are statistically insignificant between two groups. After comparing antero-posterior position of upper face to anterior cranial base, the
upper
face in Angle's class Ⅲpatients are depressed antero-posteriorly in relation to anterior cranial base. Following the comparision of antero-posterior position of upper face in relation to vertical dimension of upper face, the upper face in
Angle's
class
Ⅲpatients seem to be narrow antero-posteriorly.
KOREA J. ORTHOD 1994 ; 24(2) : 395-403.
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