三种方法对受创牙进行牙髓活力测试结果的比较

目的：用三种不同方法对近期外伤前牙进行牙髓活力测试，比较其准确性。方法：选择2008～2011年在解放军81医院口腔科就诊的64例上前牙创伤的82颗患牙，分别用冷测、电活力测试、血氧饱和度测试其牙髓活力，并于4、7、14、21、28d、2、3、6月进行复查，与前期结果进行比较分析。结果：0～28d，所有受试牙对冷测及电测均无反应。28d～6月，受试牙对冷测呈阳性反应由31颗上升至75颗，电测组为29颗上升至73颗。0d-6月，血氧饱和度值正常的受试牙数保持不变，为77颗。结论：血氧饱和度测试法对外伤牙的牙髓活力判断准确、可靠。

Comparsion of three different methods for assessing pulp vitality in recently traumatized teeth

Objective： This study was designed to evaluate and compare the efficacy of a custom～made pulse oximeter dental probe with electric pulp testing and thermal testing for measuring pulp vitality status of recently traumatized teeth. Method：From 2008 to 2011,64 patients with 82 recently traumatized maxillary incisors were treated in Department of Stomatology, The PLA 81st Hospital. Readings for pulp vitality from thermal testing, eletrical pulp testing and pulse oximetry testing, over a 6 month. Result： From day 0～day 21, all teeth showing no response to thermal test and eletrical test, day 28～6 month, the teeth showing a positive responsiveness in thermal pulp test increased form 31～75, and eletical tests was 29～73. However pulse oximeter gave a positive vitality readings that remained constant over the study period,from day 0～6 month in 77 teeth. Conclusion： Pulse oximetry is an effective, objective method of evaluating pulp vitality, especially applicable to recently traumatized teeth.