Computer-based Dental Simulation System with Haptics

基于计算机的触觉模拟牙科系统

• 批准号: 6735802
• 负责人: WILLIAM Paul BROWN
• 金额: $ 12.23万
• 依托单位: BROWN AND HERBRANSON IMAGING
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-29 至 2004-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6735802
• 关键词: anatomy; bioimaging /biomedical imaging; computer simulation; dentistry education; educational resource design /development; information systems; oral pharyngeal surgery; restorative dentistry; three dimensional imaging /topography; tooth

DESCRIPTION: In recent years training in clinical Dentistry has been significantly impacted by the rapid growth of simulation technology. The introduction of computer generated Virtual Reality, together with haptic devices, have the potential to further improve clinical training across a broad range of skills acquisition. Given that a restorative Dental procedure is a planned intervention in a complex 3-D space, the advent of VR would allow the student, and clinician alike, to practice skills acquisition in a virtual 3D world. The Aim of this project is to put a computer-based simulation system to work. We intend to develop a tooth treatment planning system that will integrate information derived from different imaging techniques and will accommodate the intrinsic three-dimensionality of the resulting data set. An ideal planning environment should present a stereo 3D computer-generated reconstruction of the imaging data in a 3D space. It should allow the operator to interact directly in 3D in a natural, direct and easy manner. This system will allow for a believable simulation of a wide variety of tooth preparations that clinicians could encounter. By combining tooth-specific micro-CT scans, microgrindings, and high-resolution photographic images, data will be co-registered and displayed as a single 3D object. The result will be a photo realistic, 3-D voxel model of a tooth. The system will allow for real-time manipulation of the multimodal 3D data. Additionally, the system will provide a number of Dental instruments for tooth preparation and shaping. The 3D image will be moveable in all axis of rotation but can be fixed in a desired position when needed. A sensor resembling a Dental hand piece will appear as a computer generated virtual hand piece on the computer screen. It can be used to perform tooth preparation procedures. The position of the virtual instrument in the users hand will be calibrated in such a way that the user perceives it to be in the same orientation and spatial position. Through the use of haptic force-feedback it will be possible to simulate the sensation of actual tooth preparations.

描述：近年来，临床牙科培训受到模拟技术快速增长的影响。引入计算机生成的虚拟现实以及触觉设备，有可能进一步改善各种技能获取的临床培训。鉴于恢复性牙科程序是在复杂的3D空间中进行的计划干预，因此VR的出现将使学生和临床医生都可以在虚拟3D世界中练习技能获取。该项目的目的是将基于计算机的仿真系统运行。我们打算开发一个牙齿处理计划系统，该系统将整合来自不同成像技术的信息，并将适应所得数据集的内在三维性。理想的计划环境应呈现3D空间中成像数据的立体3D计算机生成的重建。它应允许操作员以自然，直接和简单的方式直接以3D交互。该系统将允许对临床医生可能会遇到的各种牙齿制备进行可信的模拟。通过结合牙齿特异性的微型CT扫描，微量流和高分辨率的摄影图像，数据将被共同注册并显示为单个3D对象。结果将是牙齿的照片逼真的3-D体素模型。该系统将允许对多模式3D数据进行实时操作。此外，该系统将提供许多用于牙齿准备和塑形的牙科仪器。 3D图像将在所有旋转轴上都可以移动，但可以在需要时以所需的位置固定。类似于牙科手工件的传感器将以计算机生成的虚拟手部件出现在计算机屏幕上。它可用于执行牙齿准备程序。虚拟仪器在用户手中的位置将通过用户感知到相同的方向和空间位置的方式进行校准。通过使用触觉反馈，可以模拟实际牙齿制剂的感觉。