The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지
DOI QR코드

DOI QR Code

New bimaxillary orthognathic surgery planning and model surgery based on the concept of six degrees of freedom

  • Jeon, Jaeho (Department of Orthodontics, School of Dentistry, Pusan National University) ;
  • Kim, Yongdeok (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University) ;
  • Kim, Jongryoul (Department of Oral and Maxillofacial Surgery, Jaw and Face Surgery Center, On General Hospital) ;
  • Kang, Heejea (Department of Oral and Maxillofacial Surgery, Jaw and Face Surgery Center, On General Hospital) ;
  • Ji, Hyunjin (Defense Advanced Research and Development Center, Agency of Defense Development) ;
  • Son, Woosung (Department of Orthodontics, School of Dentistry, Pusan National University)
  • Received : 2012.09.03
  • Accepted : 2012.09.25
  • Published : 2013.02.25
Download PDF
⟨ Previous Next ⟩

Abstract

The aim of this paper was to propose a new method of bimaxillary orthognathic surgery planning and model surgery based on the concept of 6 degrees of freedom (DOF). A 22-year-old man with Class III malocclusion was referred to our clinic with complaints of facial deformity and chewing difficulty. To correct a prognathic mandible, facial asymmetry, flat occlusal plane angle, labioversion of the maxillary central incisors, and concavity of the facial profile, bimaxillary orthognathic surgery was planned. After preoperative orthodontic treatment, surgical planning based on the concept of 6 DOF was performed on a surgical treatment objective drawing, and a Jeon's model surgery chart (JMSC) was prepared. Model surgery was performed with Jeon's orthognathic surgery simulator (JOSS) using the JMSC, and an interim wafer was fabricated. Le Fort I osteotomy, bilateral sagittal split ramus osteotomy, and malar augmentation were performed. The patient received lateral cephalometric and posteroanterior cephalometric analysis in postretention for 1 year. The follow-up results were determined to be satisfactory, and skeletal relapse did not occur after 1.5 years of surgery. When maxillary and mandibular models are considered as rigid bodies, and their state of motion is described in a quantitative manner based on 6 DOF, sharing of exact information on locational movement in 3-dimensional space is possible. The use of JMSC and JOSS will actualize accurate communication and performance of model surgery among clinicians based on objective measurements.

Keywords

References

  1. Bell WH. Correction of the short-face syndromevertical maxillary deficiency: a preliminary report. J Oral Surg 1977;35:110-20.
  2. Bell WH, Creekmore TD, Alexander RG. Surgical correction of the long face syndrome. Am J Orthod 1977;71:40-67.
  3. Epker BN, Fish L. Surgical-orthodontic correction of open-bite deformity. Am J Orthod 1977;71:278-99. https://doi.org/10.1016/0002-9416(77)90188-9
  4. Hohl TA. Use of an adjustable (anatomic) articulator for case prediction in segmental surgery. In: Bell WH, Proffit WR, White RP, eds. Surgical correction of dentofacial deformities. Philadelphia: W.B. Saunders; 1980. p. 169-77.
  5. Hill SC. Cephalometric planning and model surgery. In: Bell WH, ed. Surgical correction of dentofacial deformities-New concepts. Philadelphia: W.B. Saunders; 1985. p. 217-26.
  6. Ellis E 3rd. Accuracy of model surgery: evaluation of an old technique and introduction of a new one. J Oral Maxillofac Surg 1990;48:1161-7. https://doi.org/10.1016/0278-2391(90)90532-7
  7. Jeon JH, Lee HC, Ji HJ, Jeon YJ, Kim YI, Son WS, et al. Reliability study of 6-axis model surgery simulator for orthognathic surgery. J Korean Assoc Oral Maxillofac Surg 2010;36:23-7. https://doi.org/10.5125/jkaoms.2010.36.1.23
  8. Hibbeler RC. Engineering mechanics: statics & dynamics. 12th ed. New Jersey: Prentice-Hall; 2010. p. 5.
  9. Hull DG. Fundamentals of airplane flight mecha nics. 1st ed. New York: Springer; 2007. p. 15.
  10. Schwestka-Polly R, Roese D, Kuhnt D, Hille KH. Application of the model-positioning appliance for three-dimensional positioning of the maxilla in cast surgery. Int J Adult Orthodon Orthognath Surg 1993;8:25-31.
  11. Wong BW. Innovations in orthognathic splint construc tion. J Clin Orthod 1985;19:750-6.
  12. Erickson KL. Analytic model surgery. In: Bell WH, ed. Modern practice in orthognathic and reconstructive surgery. Philadelphia: Saunders; 1992. p. 154-205.
  13. Swennen GR, Mollemans W, Schutyser F. Threedimensional treatment planning of orthognathic surgery in the era of virtual imaging. J Oral Maxillofac Surg 2009;67:2080-92. https://doi.org/10.1016/j.joms.2009.06.007
  14. Swennen G. 3D virtual reality planning of orthognathic surgery. J Oral Maxillofac Surg 2009;67:1. https://doi.org/10.1016/S0278-2391(09)01876-X
  15. Kaipatur N, Al-Thomali Y, Flores-Mir C. Accuracy of computer programs in predicting orthognathic surgery hard tissue response. J Oral Maxillofac Surg 2009;67:1628-39. https://doi.org/10.1016/j.joms.2009.03.040
  16. Xia JJ, Gateno J, Teichgraeber JF. New clinical protocol to evaluate craniomaxillofacial deformity and plan surgical correction. J Oral Maxillofac Surg 2009;67:2093-106. https://doi.org/10.1016/j.joms.2009.04.057
  17. Kaipatur NR, Flores-Mir C. Accuracy of computer programs in predicting orthognathic surgery soft tissue response. J Oral Maxillofac Surg 2009;67:751-9. https://doi.org/10.1016/j.joms.2008.11.006

Cited by

  1. Model Surgery Simplified with the Use of Old Radiographic Films vol.54, pp.4, 2020, https://doi.org/10.1177/0301574220950084