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hyperplasia by t加ee-d加ensional
A. Takahashi, W. Hao-Zong', S・Murakami, H. Kondoh*, M. Ptyishita and H. Fuchihata
Medical Unive『鼎ily, Xi'an, China
enlarged coronoid process on an exostosis on the lower border of the malar bone・In addition
a small concavity was found on the inner surface of the malar bone that was not displayed患7
other imaging modalities・The 3D images were useful in planning surgical treatment・In cases
Water's view should suggest the presence of coronoid process hyperpla篤職even if the
Keywords:〃"ullhle: hypどゅ伽如tomography,泥沌Ⅲy a>"¥""
Dcntomaxillofac. Radiol., 1993. Vol.22, 149-154, August
Coronoid p】･ocess hyperplasia is more common than it
opening and no muscle tenderness･A
provisional
Radiograpﾉ"ｃノド"dihgs Panoramic radiography was
be
treated
initially
for
TMJ
disorders'"4.10.20
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lomography""-"".8.10-12.20.,22.24.２７ g^j computed tomoノ 魂
pIainradiographs4,12,15 １９． andcventomography16
日
、
ｑ
陀狐ures of the condition.
Caseノ
Ｌ Ｌ
可．to resolve with occlusal therapy・When first seen,
Figure 1 Case 1. Waters，radiograph showing asymmetry of the
∼、
３D imag航g of coronoidﾉlyperplasia: A. Takａﾉmshi et al
442-⑪ＳＲＫＲＵＮＬＶ。命じ陰門
４
８
Ｆ１冨可「Ⅱ。
目垂手
Ｃ
Ｏ
Figure 2 Case I. Axial CT images at the level of the left coronoid process・a. In centric occlusion, the hyperplastic left coronoid process
S唖１，s.
limitation of opening･Three years previously he had
months afterwards，Splint therapy had been under-
maxillary alveolus・The triangular hyperplastic left
this one scan・The CT data were therefore transferred
Radiogﾉ ﾉ"cﾉｾ"d加顔Bilateral coronoid hyperplasia
150
Dcntomaxillofac・Radio1., 1993. Vol. 22, August
■
一
３D imaging of coronoid hyperplasia: A. Takαﾉiashi et al
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Figure 3 Case 1. 3D display processed from 2-mm thick axial CI" scans obtained in the opened mouth position・The mandible is displayed as 8rey.
Dcntomaxillofac. Radiol., 1993, Vol．2２, August
I51
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Address: Dr A・Takahashi, Department of Oral and Maxillofacial
daoka. Suita・Osaka 565, Japan.
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