西安地区出土2000年前人牙三维模型的建立  

Establishment of the 3 dimensional models of ancient human teeth which were unearthed in Xi'an area about 2000 years ago

作　　者：彭绍斌[1,2] 邵金陵[1] 段小红[1] 段清波[3] 周涛[1] 石飒飒[1] 李琳[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032 [2]解放军第113医院口腔科,浙江宁波315040 [3]西北大学文博学院,陕西西安710069

出　　处：《临床口腔医学杂志》2013年第1期3-6,共4页Journal of Clinical Stomatology

基　　金：国家自然科学基金(31070835);陕西社发公关课题基金(2011K15-06-04)

摘　　要：目的:运用现代影像学技术建立古人类牙标本三维模型,以减少古人类牙形态学研究过程中造成的毁损,并实现古人类牙标本的数字化保存和资源共享。方法:运用Micro-CT对517颗西安地区出土的2000年前人牙进行扫描,采用Mimics10.01软件三维重建和保存。扫描图像全部重建后,从中随机抽取20颗牙,对照标本实物与其相应模型进行牙冠长、根长、近远中径、颊舌径的比较,以验证模型的可靠性和真实性。结果:对517颗牙全部建立了三维模型。模型形态逼真,在软件支持下,可将各组织结构精确分离和测量。通过对标本的实际测量值与三维模型相应测量值的比较,发现两种方法测得的数值差异无统计学意义(P>0.05),误差率在0.21%～4.99%之间。结论:Micro-CT扫描及Mimics软件三维重建技术可作为古人类牙标本数字化保存的较佳方法,该方法易于操作,可行性高,可同时保护牙标本的完整性,又可获得较精确的三维数据。Objective：To establish the 3 dimensional（3D） models of ancient human teeth using modern digital imaging techniques,for reducing the damage during morphological study,and implementing the digitized imaging conservation of ancient human teeth and resource sharing.Method：517 teeth which were unearthed in Xi＇an area about 2000 years ago were scanned using Micro-CT,then they were reconstructed to 3D images and saved by Mimics10.01 software.After 3D reconstruction,20 teeth were selected randomly from them.The crown lengths,root lengths,mesiodistal diameters and buccolingual diameters of the 20 samples and their reconstructed 3D models were compared to verify the accuracy of the 3D models.Result：517 teeth were reconstructed to 3D models.The models were accurate,it can separate and measure the structures of teeth precisely by software.The relevant parameters between the samples and 3D models were not significantly different（P 0.05）,the error rate was between 0.21 % to 4.99 %.Conclusion：Micro-CT scanning and 3D imaging reconstruction technique is simple and feasible in the digitized imaging conservation methods of ancient human teeth.They can protect the integrity of teeth samples and acquire accurate data.

关 键 词：MICRO-CT 三维重建 数字影像 牙齿 形态学 

分 类 号：R322.4[医药卫生—人体解剖和组织胚胎学]