Change of Pulp Sensibility after Maxillary Osteotomy

Abstract

This study is to investigate the change of pulp sensibility on maxillary teeth after performing the combined surgical methods, that we used Le Fort I type osteotomy with anterior maxillary ostotomy.12 months to 42 months after operation, electric pulp test was carried out on 10 patients who underwent Le Fort I type osteotomy (Le Fort I type group), and 8 patients who underwent Le Fort I type osteotomy with anterior maxilary ostotomy (combination group).12 months after operation, the positive ratio of pulp sensibility show 92.3% in the combination group, 94.5% in the Le Fort I type group, from now on, the positive ratio in these two groups ascended with time. And for the 42 months after operation, positive ratio shows 98.9%, 99.1%. No significant difference could be found in the positive ratio between these two groups, and in positive ratio of the groups between the anterior region and the molar region.As a result, it seemed that disturbance of pulp sensibility didn't increase when Le Fort I type osteotomy together with maxillary anterior osteotomy were used.It seemed that a postoperative observation over 1 year was necessary.