J Korean Assoc Maxillofac Plast Reconstr Surg.  2006 May;28(3):222-228.

Midfacial measurement using occlusal maxillary CT and surgical implications of maxillary osteotomies

  • 1Department of Oral and Maxillofaciacial Surgery, School of Dentistry, Seoul National University, Seoul, Korea.
  • 2Department of Dentistry-Oral and Maxillofaciacial Surgery, Seoul National University Boramae Hosipital, Shindaebanag 2 dong 425, Dongjak gu, Seoul, 156-707 Korea. ihchung@snuh.org


Various methods have been used in the past to indirectly analyze the craniofacial region. Among these, the lateral and posterior-anterior cephalometircs are used for the evaluation of the dentofacial deformities. However, cephalometircs create inaccuracies because of the inherent enlargement and distortion of the image. The interpretation of cephalometric films is also problematic: the number of anatomic landmarks that can be identified accurately is limited, and the overlap of structures on a radiograph making locating these landmarks difficult. To overcome these problems, computed tomography(CT) has been recommended as an useful modality in the diagnosis, surgical planning, and follow-up of craniofacial anomalies. There is no significant enlargement or distortion of the image, overlap of structure, or tracing error. And the number of anatomic landmarks is vast. The purpose of this study was to examine the orbit and midfacial region using Occlusal Maxillary CT, consisted of slices parallel to the occlusal plane. Based on these CT scan, we provide the data that could be applied to monitor an individual patient's skeletal pattern and the guide to the maxillary osteotomy.


Computed tomography; Occlusal maxillary CT; Maxillary osteotomy

MeSH Terms

Anatomic Landmarks
Dental Occlusion
Dentofacial Deformities
Follow-Up Studies
Maxillary Osteotomy*
Tomography, X-Ray Computed
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