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Correlation of mandibular bone quality with neurosensory disturbance after sagittal split ramus osteotomy |
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| Authors: | Yoshioka Izumi Tanaka Tatsurou Khanal Amit Habu Manabu Kito Shinji Kodama Masaaki Oda Masafumi Wakasugi-Sato Nao Matsumoto-Takeda Shinobu Seta Yuji Tominaga Kazuhiro Sakoda Sumio Morimoto Yasuhiro |
| Affiliation: | aDepartment of Sensory and Motor Organs, Faculty of Medicine, Miyazaki University, Miyazaki, Japan;bDepartment of Oral Diagnostic Science, Kyushu Dental College, Kitakyushu, Japan;cDepartment of Oral and Maxillofacial Surgery, Kyushu Dental College, Kitakyushu, Japan;dDepartment of Bioscience, Kyushu Dental College, Kitakyushu, Japan;eCenter for Oral Biological Research, Kyushu Dental College, Kitakyushu, Japan |
| Abstract: | Our aim was to find out whether the quality of bone around the inferior alveolar nerve is correlated with neurosensory disturbance to the nerve after sagittal split ramus osteotomy (SSRO) in patients with mandibular prognathism. Computed tomograms (CT) were taken of 35 patients with mandibular prognathism and 35 without. To assess the density of bone around the inferior alveolar nerve, the width of the buccal cortical bone in the mandibular second molar regions was measured on CT. The Hounsfield units (HU) in the same regions were also measured. The number of HU in the mandible around the second molar regions was significantly higher (p < 0.01) in those with neurosensory disturbance (p < 0.01). The quality of bone measured by HU is associated with an increased risk of neurosensory disturbance, but the width of buccal bone is not. |
| Keywords: | CT scan Inferior alveolar nerve canal Prognathism Neurosensory disturbance Bone density SSRO |
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