Dimensions of Velopharyngeal Space following Maxillary Advancement with Le Fort I Osteotomy Compared to Zisser Segmental Osteotomy: A Cephalometric Study.
The objectives of this study are to assess the velopharyngeal dimensions using cephalometric variables of the nasopharynx and oropharynx as well as to compare the Le Fort I osteotomy technique to Zisser's anterior maxillary osteotomy technique based on patients' outcomes within early and late postoperative follow-ups. 15 patients with severe maxillary deficiency treated with Le Fort I osteotomy and maxillary segmental osteotomy were assessed. Preoperative, early postoperative, and late postoperative follow-up lateral cephalograms, patient histories, and operative reports are reviewed with a focus on defined cephalometric landmarks for assessing velopharyngeal space dimension and maxillary movement (measured for three different tracing points). A significant change was found between preoperative and postoperative lateral cephalometric measurements regarding the distance between the posterior nasal spine and the posterior pharyngeal wall in Le Fort I osteotomy cases. However, no significant difference was found between preoperative and postoperative measurements in maxillary segmental osteotomy cases regarding the same measurements. The velopharyngeal area calculated for the Le Fort I osteotomy group showed a significant difference between the preoperative and postoperative measurements. Le Fort I osteotomy for advancement of upper jaw increases velopharyngeal space. On the other hand, Zisser's anterior maxillary segmental osteotomy does not alter the dimension of the velopharyngeal space significantly.
Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, Abant Izzet Baysal University, Golkoy, 14280 Bolu, Turkey.
Furkan Erol
FE
Karabekmez
Oral and Maxillofacial Surgery Clinics, Central Hospital, University Hospital Munster, Albert Schweitzer Campus 1, 48149 Münster, Germany.
Johannes
J
Kleinheinz
Oral and Maxillofacial Surgery Clinics, Central Hospital, University Hospital Munster, Albert Schweitzer Campus 1, 48149 Münster, Germany.
Susanne
S
Jung
D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000379:methods; D002971:Cleft Lip / Q000601:surgery; D002972:Cleft Palate / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000601:surgery*; D009305:Nasopharynx / Q000601:surgery*; D009960:Oropharynx / Q000601:surgery*; D010027:Osteotomy / Q000379:methods; D055815:Young Adult