Shafi, M.I., Ayoub, A. , Ju, X. and Khambay, B.S. (2013) The accuracy of 3D prediction planning for the surgical correction of facial deformities using Maxilim. International Journal of Oral and Maxillofacial Surgery, 42(7), pp. 801-806. (doi: 10.1016/j.ijom.2013.01.015)
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Publisher's URL: http://dx.doi.org/10.1016/j.ijom.2013.01.015
Abstract
he motivation for orthognathic surgery is to improve facial appearance and quality of life. This study aimed to validate a three-dimensional (3D) orthognathic planning programme (Maxilim) for predicting soft tissue changes following Le Fort I advancements. Cone beam computed tomography (CBCT) scans were taken before surgery (T<sub>1</sub>) and at 6–12 months after surgery (T<sub>2</sub>) for 13 patients. For each patient the 3D hard tissue changes between T<sub>1</sub> and T<sub>2</sub> were determined by CBCT superimposition on the cranial vault. Using Maxilim, each patient's skeletal movements were used to generate a 3D soft tissue prediction. The actual soft tissue mesh at T<sub>2</sub> was compared to the predicted mesh. The face was divided into areas: nose, right and left nares, right and left paranasal regions, upper and lower lip, and chin. The absolute distance between meshes for each region was calculated. A one-sample t-test showed the distances between the meshes for all of the areas were within 3 mm (P < 0.05), except for the upper lip which was greater than 3 mm (P = 0.577). Using Maxilim, 3D soft tissue predictions for Le Fort I advancements were clinically satisfactory in the regions assessed, but associated with marked errors around the region of the upper lip.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ayoub, Professor Ashraf and Ju, Dr Xiangyang and Khambay, Dr Balvinder |
| Authors: | Shafi, M.I., Ayoub, A., Ju, X., and Khambay, B.S. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School |
| Journal Name: | International Journal of Oral and Maxillofacial Surgery |
| Publisher: | Elsevier |
| ISSN: | 0901-5027 |
| ISSN (Online): | 1399-0020 |
| Published Online: | 07 March 2013 |
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