Attar Bijan Movahedian, Far Navid Farzad
Department of Oral and Maxillofacial Surgery, School of Dentistry, Torabinejad Dental Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
J Res Med Sci. 2009 Sep;14(5):269-75.
This study evaluated the sensation of palatal mucosa before and after Le Fort I osteotomy and compared it based on whether greater palatine nerve has been dissected or not.
Sixteen patients were studied within one week before surgery and then one week, 6 weeks, 3 months and 6 months after surgery. Four tests including sharp-blunt discrimination, cold perception, pin prick sensation and electrical stimulation were performed.
Mean values of electrical stimulation were significantly higher 6 months after surgery (p < 0.05), on the other hand mean values of pin-prick sensation were significantly lower (p < 0.05). All patients regardless of the condition of greater palatine nerve were responsive to cold perception and sharp-blunt discrimination 6 months after surgery.
Following Le Fort I osteotomy, palatal responsiveness to electrical stimulation decreases and mechanical hyper sensitization occurs. Dissection of greater palatine nerve was shown to have no effect on the results.
本研究评估了Le Fort I型截骨术前和术后腭黏膜的感觉，并根据腭大神经是否被解剖进行了比较。
对16例患者在手术前一周以及手术后一周、6周、3个月和6个月进行研究。进行了四项测试，包括锐钝辨别、冷觉、针刺感觉和电刺激。
术后6个月电刺激的平均值显著升高（p < 0.05），另一方面针刺感觉的平均值显著降低（p < 0.05）。所有患者，无论腭大神经状况如何，术后6个月对冷觉和锐钝辨别均有反应。
Le Fort I型截骨术后，腭对电刺激的反应性降低，出现机械性超敏反应。结果表明腭大神经的解剖对结果没有影响。
