3D volume rendering using multislice CT for dental implants

被引:52
作者
Cavalcanti, MGP [1 ]
Ruprecht, A [1 ]
Vannier, MW [1 ]
机构
[1] Univ Sao Paulo, Fac Odontol, Dept Radiol, BR-05508900 Sao Paulo, Brazil
关键词
tomography; X-ray computed; dental implantation; mandible; image processing; computer-assisted;
D O I
10.1038/sj.dmfr.4600701
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: To determine the precision and accuracy of three-dimensional (313) volume rendering spiral multislice computed tomography (CT)-based linear measurements of the mental foramen for dental implants, in vitro, and their precision, in vivo. Methods: Five cadaver heads were imaged by multislice spiral CT (Toshiba Aquilion) with 0.5 mm. thick axial slices (0.5 mm/0.5 s of table feed) at 0.5 mm interval reconstructions. The image data sets were transferred to a networked computer workstation. Using computer graphics the data were analysed with a 3D volume rendering technique using Vitrea(R) software. Two oral and maxillofacial radiologists, independently, made electronic linear measurements from the superior border of the mental foramen to the crest of the alveolar process. The soft tissues were removed and physical measurements made using a 3 Space(TM) (Polhemus, Colchester, VT, USA) electromagnetic digitizer with a personal computer running Windows(R) 98. The same linear measurements of 15 patients using the same imaging methodology were performed and the precision was analysed. Results: The findings showed no statistically significant inter- or intra-observer differences in vitro and in vivo, or between imaging and physical measurements in vitro (P>0.05). Conclusions: 3D multislice spiral CT imaging allows highly accurate measurements for dental implant placement in proximity to the mental foramen. Computer graphics software, using volume rendering is suitable for implant planning.
引用
收藏
页码:218 / 223
页数:6
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