Three-dimensional reconstruction of teeth and jaws based on segmentation of CT images using watershed transformation

作     者：Naumovich, S. S. Naumovich, S. A. Goncharenko, V. G. 

作者机构：Belarusian State Med Univ Dept Prosthodont Minsk BELARUS Natl Acad Sci United Inst Informat Problems Lab Mathmat Cybernet Minsk BELARUS 

出 版 物：《DENTOMAXILLOFACIAL RADIOLOGY》 (Dentomaxillofac. Radiol.)

年 卷 期：2015年第44卷第4期

页      面：20140313页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 100207[医学-影像医学与核医学] 1006[医学-中西医结合] 1003[医学-口腔医学] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 100106[医学-放射医学] 1009[医学-特种医学] 10[医学] 100602[医学-中西医结合临床] 

基　　金：State Committee on Science and Technology of the Republic of Belarus 

主　　题：cone beam computed tomography spiral computed tomography computer-assisted image processing 3D dental model digital dentistry 

摘      要：The objective of the present study was the development and clinical testing of a three-dimensional (3D) reconstruction method of teeth and a bone tissue of the jaw on the basis of CT images of the maxillofacial region. 3D reconstruction was performed using the specially designed original software based on watershed transformation. Computed tomograms in digital imaging and communications in medicine format obtained on multispiral CT and CBCT scanners were used for creation of 3D models of teeth and the jaws. The processing algorithm is realized in the stepwise threshold image segmentation with the placement of markers in the mode of a multiplanar projection in areas relating to the teeth and a bone tissue. The developed software initially creates coarse 3D models of the entire dentition and the jaw. Then, certain procedures specify the model of the jaw and cut the dentition into separate teeth. The proper selection of the segmentation threshold is very important for CBCT images having a low contrast and high noise level. The developed semi-automatic algorithm of multispiral and cone beam computed tomogram processing allows 3D models of teeth to be created separating them from a bone tissue of the jaws. The software is easy to install in a dentist s workplace, has an intuitive interface and takes little time in processing. The obtained 3D models can be used for solving a wide range of scientific and clinical tasks.