摘要
目的研究头低位卧床模拟失重对健康人牙龈颜色的影响。方法采用﹣6°头低位卧床模拟失重,在5个时间点:卧床前第3天(HDBR-3)、卧床第10天(HDBR 10)、卧床第20天(HDBR 20)、卧床第30天(HDBR 30)和恢复期第3天(HDBR+3)检测游离龈和附着龈的色彩。结果与卧床前相比,男性志愿者牙龈游离龈、附着龈的L*值在卧床第20天、30天显著升高(P<0.05),在卧床第10天、恢复期第3天无显著性差异;游离龈和附着龈的a*和b*值在卧床第20天、30天和恢复期第3天非常显著升高(P<0.01),在卧床第10天无显著性差异。结论失重环境可使人体游离龈、附着龈发生炎症反应。为降低失重对人体口腔软组织的影响,在航天员的日常训练和航天实验过程中应加强口腔组织的卫生防护。
Objective To investigate the effects of head-down bed rest（HDBR） on gingiva color in healthy human.Methods The color of free and attached gingiva were observed at 5 time points,which were 3 d before（HDBR-3）,after（HDBR＋3） experiment,the 10th（HDBR 10）,20th（HDBR 20）,and 30th（HDBR 30） day of the experiment.Results Compared with those on HDBR-3,value L＊ of free and attached gingiva of male volunteers increased significantly on HDBR 20 and HDBR 30（P0.05）,but no significant difference on HDBR 10 and HDBR＋3;value a＊ and b＊ of free and attached gingiva increased significantly on HDBR 20,HDBR 30 and HDBR＋3（P0.01）,while no significant difference on HDBR 10.Conclusion HDBR can induce inflammation in free and attached gingival.During the daily training and tests,astronauts should protect oral tissue against affection.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2012年第2期135-137,共3页
Space Medicine & Medical Engineering
基金
中国载人航天预先研究项目(2008SY5406001)
