• The Bulletin of The Korean Astronomical Society
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• v.32 no.2
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• pp.32.2-32.2
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• 2007

• The Bulletin of The Korean Astronomical Society
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• v.32 no.2
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• pp.68.1-68.1
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• 2007

• The Bulletin of The Korean Astronomical Society
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• v.30 no.2
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• pp.40.2-40.2
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• 2005

• The Bulletin of The Korean Astronomical Society
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• v.32 no.1
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• pp.34.1-34.1
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• 2007

• The Bulletin of The Korean Astronomical Society
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• v.27 no.1
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• pp.32-32
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• 2002

• The Bulletin of The Korean Astronomical Society
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• v.31 no.2
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• pp.30.1-30.1
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• 2006

• The Bulletin of The Korean Astronomical Society
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• v.33 no.2
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• pp.31.1-31.1
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• 2008

• Bulletin of the Korean Space Science Society
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• 2009.04a
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• pp.46.2-46.2
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• 2009

• Imaging Science in Dentistry
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• v.31 no.4
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• pp.235-240
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• 2001

Purpose: To evaluate displacement and morphologic changes of the temporomandibular joint (TMJ) disc in patient with internal derangement using magnetic resonance imaging (MRI). Materials and Methods: One hundred and forty five MR images of TMJs in 73 patients were evaluated. Positional and morphologic changes of the TMJ discs were assessed. Lateral or medial disc displacement was also evaluated on coronal images. Results: Among 63 discs with anterior disc displacement, 37 discs were assessed as a biconcave disc and 21 as a deformed disc. Rotational disc displacement was observed in 35 discs. Anteromedial disc displacement was observed in 29 discs, and anterolateral direction in 6 discs. Among 35 rotational displacement, 5 biconcave discs and 21 deformed discs were observed. Conclusion : Rotational and sideways displacement of TMJ discs were found to be common and an important aspect of internal derangement. This study also suggests that sagittal and coronal images of the TMJ have complementary abilities for an assessment of joint abnormality.

• Journal of Korean society of Dental Hygiene
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• v.10 no.4
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• pp.655-661
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• 2010

Objectives : This study is aimed to prevent the damage to the inferior alveolar nerve during the orthognathic surgery. Methods : The control group consist of 50 patients with class I occlusion. The experimental group consist of 50 patients with class III malocclusion. The cepalometric radiography was used to evaluate the position of the mental foramina. Results : In the first, mental foramen position of class III was more inferior 0.85 mm in the distance between base of mandible and mental foramen. But the distance between occlusal plan and mental foramen had not statistically significant. Secondly, mental foramen location of Mandibular Prognathism was more anterior 0.91 mm in the distance between coronal plane of mandible included pogonion point and mental foramen. Also, the distance of occlusal-coronal plane of mandible included central incisor and mental foramen had statistically significant. The mental foramen location of class III was more anterior 4.81 mm than class I patients. Conclusions : The result of this study could help the clinicians to apprehend fundamental data with various facial skeletal types for any related researches about the location of the mental foramina for other purposes.