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，模拟技术的快速发展对临床牙科培训产生了重大影响。计算机生成的虚拟现实与触觉设备的引入有可能进一步改善广泛技能获取的临床培训。鉴于修复性牙科手术是在复杂的 3D 空间中进行有计划的干预，VR 的出现将使学生和临床医生等能够在虚拟 3D 世界中练习技能获取。该项目的目的是让基于计算机的模拟系统投入运行。我们打算开发一种牙齿治疗计划系统，该系统将整合来自不同成像技术的信息，并适应所得数据集的固有三维性。理想的规划环境应在 3D 空间中呈现计算机生成的立体 3D 成像数据重建。它应该允许操作者以自然、直接和轻松的方式直接进行 3D 交互。该系统将能够对临床医生可能遇到的各种牙齿预备进行可信的模拟。通过结合牙齿特定的显微 CT 扫描、显微研磨和高分辨率摄影图像，数据将被共同注册并显示为单个 3D 对象。结果将是一个逼真的 3D 牙齿体素模型。该系统将允许实时操纵多模态 3D 数据。此外，该系统还将提供许多用于牙齿预备和塑形的牙科器械。 3D 图像可在所有旋转轴上移动，但在需要时可以固定在所需位置。类似于牙科手机的传感器将在计算机屏幕上显示为计算机生成的虚拟手机。它可用于执行牙齿预备程序。虚拟仪器在用户手中的位置将以用户感知到的方式进行校准，使其处于相同的方向和空间位置。通过使用触觉力反馈，可以模拟实际牙齿预备的感觉。