TY - JOUR
T1 - Long-term evaluation of swallowing function before and after sagittal split ramus osteotomy
AU - Namaki, S.
AU - Maekawa, N.
AU - Iwata, J.
AU - Sawada, K.
AU - Namaki, M.
AU - Bjornland, T.
AU - Yonehara, Y.
PY - 2014/7
Y1 - 2014/7
N2 - The aim of this study was to determine whether mandibular setback by sagittal split ramus osteotomy (SSRO) influences swallowing function. The subjects were 14 patients with skeletal class III malocclusions who underwent setback surgery by SSRO. Morphological changes were studied on cephalograms, and swallowing function was evaluated by videofluorography before the operation (T0) and at 7-10 days (T1), 3 months (T2), and 6 months (T3) after surgery. The angle between nasion, sella, and hyoid bone (HSN) and the sella-hyoid distance had increased significantly at T1. The hyoid bone returned to the preoperative position at T2. There were no significant changes in the oropharyngeal space at any time. On videofluorographic assessment, lingual movement, soft palate movement, and epiglottic movement had decreased at T1, but all patients recovered at T2. The oral transit time was significantly longer at T1 than at T0. Our results confirm that SSRO influences swallowing function. Swallowing function appears to stabilize by 3 months after surgery.
AB - The aim of this study was to determine whether mandibular setback by sagittal split ramus osteotomy (SSRO) influences swallowing function. The subjects were 14 patients with skeletal class III malocclusions who underwent setback surgery by SSRO. Morphological changes were studied on cephalograms, and swallowing function was evaluated by videofluorography before the operation (T0) and at 7-10 days (T1), 3 months (T2), and 6 months (T3) after surgery. The angle between nasion, sella, and hyoid bone (HSN) and the sella-hyoid distance had increased significantly at T1. The hyoid bone returned to the preoperative position at T2. There were no significant changes in the oropharyngeal space at any time. On videofluorographic assessment, lingual movement, soft palate movement, and epiglottic movement had decreased at T1, but all patients recovered at T2. The oral transit time was significantly longer at T1 than at T0. Our results confirm that SSRO influences swallowing function. Swallowing function appears to stabilize by 3 months after surgery.
KW - hyoid bone
KW - oropharyngeal airway
KW - orthognathic surgery
KW - swallowing function
UR - http://www.scopus.com/inward/record.url?scp=84902163297&partnerID=8YFLogxK
U2 - 10.1016/j.ijom.2014.03.001
DO - 10.1016/j.ijom.2014.03.001
M3 - Article
C2 - 24679852
AN - SCOPUS:84902163297
SN - 0901-5027
VL - 43
SP - 856
EP - 861
JO - International Journal of Oral and Maxillofacial Surgery
JF - International Journal of Oral and Maxillofacial Surgery
IS - 7
ER -