Author(s): Li H, Yang Y, Chen Y, Wu Y, Zhang Y,
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Abstract PURPOSE: To establish a method to analyze malformed maxillae of postoperative adult patients with unilateral complete cleft lip and palate in 3 dimensions. MATERIALS AND METHODS: A total of 35 landmarks were defined and used to reconstruct 3-dimensional maxillary images of healthy Chinese Han subjects and 30 postoperative Chinese Han adult patients (17 men and 13 women, with mean age of 19.07 years) with unilateral complete cleft lip and palate. This was done using spiral computed tomography, and their corresponding parameters were analyzed using SimPlant software, version 11.04, and compared by t test using SAS software, version 6.12. RESULTS: Of the 7 centered landmarks, A and ANS in the patients were obviously deviated to the nonoperative side (P < .01) and the symmetrical landmark pairs INM'-INM, SNM'-SNM and SPr'-SPr, but not MA'-MA, SoF'-SoF, and LPAC-LPA in the infraorbital region and piriform aperture peritreme in healthy subjects were shifted toward the coordinate sagittal plane S. The data also showed that the maxillae in the patients' operative side were hypoplastic, especially in the posteroanterior direction compared with the nonoperative side and healthy subjects. CONCLUSIONS: The proposed method can precisely measure the distances of the maxillary landmarks to 3-dimensional coordinates and has application potential in evaluating maxillary deformity in patients with postoperative unilateral complete cleft lip and palate. Copyright © 2011 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
This article was published in J Oral Maxillofac Surg
and referenced in Journal of Addiction Research & Therapy