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KMID : 0360120080300060546
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Journal of the Korean Society of Maxillofacial Plastic Reconstructive Surgeons
2008 Volume.30 No. 6 p.546 ~ p.553
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Validity of posterior anterior cephalometric and 3D-CT for orbital canting analysis
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Kim Jin-Wook
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Abstract
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Purpose: The purpose of this study was to estimate validity of posterior anterior cephalometric and 3DCT for orbital canting analysis.
Material and Methods : Three trained observers classified two patients group using standardized frontal photographs of facial asymmetry patients. Group A consisted of patients with facial asymmetry and orbital canting(n=19), and group B consisted of patients with only facial asymmetry(n=43). Orbital canting was measured with line of bilateral inferior orbitale. Orbital canting measurement was done with posterior anterior cephalometric and 3D-CT. Each horizontal reference line was established by bilateral GWSO(cephalometric), FZS(3D-CT). Maxillary canting and mandibular deviation angle were also measured and analyzed with orbital canting.
Results: The mean orbital canting was 3.03+/-1.00 degrees in Group A and 1.11+/-0.76 degrees in Group B in frontal photograph. The mean orbital canting was 1.20+/-0.74 degrees in group A and 1.22+/-0.65 degrees in group B by cephalometric analysis(p>0.05). In 3D-CT, orbital canting was almost paralleled with horizontal reference line. The orbital canting, maxillay canting and mandibular deviation between two groups showed no significant differences except madibular deviation in 3D-CT.
Conclusion: Common analysis of posterior anterior cephalometric and 3D-CT is not valide method to evaluate orbital canting for facial asymmetry patients with orbital canting.
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KEYWORD
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Cephalomatric, 3D-CT, Orbital canting
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