PHARYNGEAL AIRWAY VOLUME FOLLOWING ...

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45. Mozzo P, Procacci C, Tacconi A, Martini PT, Andreis IA. A new volumetric CT machine for dental imaging based on the cone-beam technique: preliminary results. Eur Radiol 1998;8:1558-1564. 46. Mah J, Hatcher D. Three-dimensional craniofacial imaging. Am J Orthod Dentofacial Orthop 2004;126:308-309. 47. Sears C. Pharyngeal Airway Change After Orthognathic Surgery as Assessed by Conebeam Computed Tomography. Department of Growth and Development. San Francisco: University of California; 2006: p. 1-23. 22
CHAPTER 3: JOURNAL ARTICLE Abstract Purpose: The purpose of this study was to examine the effects of maxillomandibular advancement surgery on the pharyngeal airway volume in the short term and longer term and determine if a relationship exists between the amount of advancement and airway volume change. Materials and Methods: Records of 55 patients who had undergone combined orthodontic treatment and maxillomandibular advancement osteotomies were collected and analyzed. Cone beam computed tomography scans were taken within three days pre-surgery and at least eight weeks post-surgery. The pharyngeal airway volume was measured at pre-surgery (T0), 2-3 months post-surgery (T1), and 4-12 months post-surgery (T2). Results: There was a significant increase in airway volume between T0 and T1 and between T0 and T2. No significant differences were found between T1 and T2. Correlations between the amount of surgical advancement and percentage of volumetric change were confounding and inconsistent between patients. Conclusion: In this study, maxillomandibular advancement osteotomies resulted in a significant increase in airway volume 2-3 months after 23
Page 1 and 2: PHARYNGEAL AIRWAY VOLUME FOLLOWING
Page 3 and 4: PHARYNGEAL AIRWAY VOLUME FOLLOWING
Page 5 and 6: ACKNOWLEDGEMENTS I would like to th
Page 7 and 8: LIST OF TABLES Table 3.1: Descripti
Page 9 and 10: CHAPTER 1: INTRODUCTION Combined or
Page 11 and 12: CHAPTER 2: REVIEW OF THE LITERATURE
Page 13 and 14: the posterior pharyngeal wall, 2 or
Page 15 and 16: mask discomfort, nasal dryness, and
Page 17 and 18: Tongue-Reduction Procedures Other s
Page 19 and 20: structures causes the airway muscle
Page 21 and 22: after surgery, the upper retropalat
Page 23 and 24: skeletal tissues, soft tissues, and
Page 25 and 26: Literature Cited 1. Schwab RJ, Gold
Page 27 and 28: 19. Wittels EH, Thompson S. Obstruc
Page 29: 37. Li KK, Guilleminault C, Riley R
Page 33 and 34: patients often have elongated soft
Page 35 and 36: subsequent to orthognathic surgery
Page 37 and 38: years. Females had a mean age of 28
Page 39 and 40: Line from Sella to PNS Posterior of
Page 41 and 42: Line from Maxillary Incisor to Post
Page 43 and 44: counterclockwise rotation of the ma
Page 45 and 46: Table 3.1: Descriptive Statistics f
Page 47 and 48: Volume (cubic mm) 30000.00 25000.00
Page 49 and 50: percent change from T0 to T2 (r=.55
Page 51 and 52: surrounding soft tissues encroachin
Page 53 and 54: the pre-surgical values, but there
Page 55 and 56: Conclusions 1. In this study, patie
Page 57 and 58: 10. Lyberg T, Krogstad O, Djupeslan
Page 59 and 60: 27. Li KK, Powell NB, Riley RW, Tro

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