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Analysis of the primary and the permanent teeth dimension In korean hemifacial microsomia patients

Korean Journal of Orthodontics 2000³â 30±Ç 1È£ p.43 ~ 52
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À念ÀÏ/Young Il Chang ¾ç¿ø½Ä/³²µ¿½Ä/±èÅ¿ì/¹é½ÂÇÐ/Won Sik Yang/Dong Seok Nahm/Tae Woo Kim/Seung Hak Baek

Abstract

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ÀÇ Å©±â¿Í ÇüÅ ÀÌ»óÀÌ ¹ß»ýµÉ °¡´É¼ºÀÌ ÀÖ´Ù´Â °ÍÀ» º¸¿©ÁÖ¾ú´Ù.
#ÃÊ·Ï#
-Abstract-
Hemifacial microsomia (HFM) is the second most common craniofacial abnormalies.
HFM represnted a spectrum of clinical findings such as hypoplasia of the mandibular
ramus and condyle, confinement of maxilla growth, external and/or middle ear defects,
involvement of some cranial suture, buccal soft tissue, facial nerve, and muscles in the
affected side. HFM often showed progressive facial asymmetry and occlusal plane
slanting to the affected side with growth.
There were several reports about asymmetry of tooth maturation, hypodontia, delayed
eruption, enamel hypoplasia in HFM. Since teeth develop in close association with size
and morphology of the maxilla and the mandible, it is highly likely that dental changes
will be present in HFM. So the purpose of this study was to investigate the differences
of the primary and the permanent teeth dimensions in the maxillary and the mandibular
dentition between the affected and the non-affected side of HFM.
The sample of this study consisted of 34 unilateral HFM patients (18 males and 16
females, average age : 5 year 11 months old). The authors examined the mesiodistal and
the faciolingual dimensions of the primary and the permanent teeth and performed
statistical study by using paired t-test.
The results were as follows :
1. The mesiodistal dimensions of the mandibular second primary molar and the
mandibular first permanent molar in the affected side of HFM were significantly smaller
than those of non-affected side. But there were no significant differences in the anterior
teeth and the mandibular frist primary molar. It means that a gradient of severity from
anterior teeth to posterior teeth was found in the mandibular dentition..
2. Although there were no significant differences in the faciolingual dimensions of the
primary and the permanent teeth in the maxillary and the mandibular dentition between
the affected and non-affected side of HFM, there were general trend of compensatory
increase in faciolingual dimension of the mandibular primary and the permanent teeth in
the affected side.
Therefore these results showed that HFM might affect on the abnormality of tooth
dimension, especially the most posterior teeth, in the affected side of the mandible.

Å°¿öµå

¹Ý¾È¸é ¿Ö¼ÒÁõ; Ä¡¾Æ ±Ù¿ø½É Æø°æ; Ä¡¾Æ Çù¼³ Æø°æ; Hemifacial microsomia; Mesiodistal dimension; Faciolingual dimension;

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