Educational system for dental radiography training using virtual reality

口腔内x线摄影在牙科中经常使用。x线片质量对诊断的影响。口腔内x光片的质素主要受放射技师的技术所影响。在口腔专科学生的临床培训过程中，对口腔内x线摄影技术的培训是非常重要的。所以在这个实验中，我们进行了一个训练系统，用虚拟现实来进行口腔内x光摄影。研究分为以下三个阶段：1。检查牙齿和颌骨上最合适的数据，以便使用模拟。明确了学生对虚拟现实系统的感受。建立程序，模拟口腔内x光图像，并检查其精度。结果锥形束CT获得的数据空间分辨率最高，且易于转换，最适合模拟。在使用虚拟空间的感觉上，三维效果是一个比较好的结果。该程序采用visualbasic编写，模拟口腔内x线摄影图像。该仿真图像具有较高的精度。未解决的问题是成像时间较长，约为5分钟，图像分辨率较差。它可以思考能力更高的计算机系统与解决这些问题的必要性。

Intra-oral radiography is used frequently in dentistry. The quality of radiograph influences on diagnosis. The quality of intra-oral radiography is mostly affected by the skill of radiographers. In the course of clinical training of the students of dental school, it is important to train the technique of intra-oral radiography. So in this experiments we conducted to make up the training system of taking the intra-oral radiography with virtual reality.Research was divided in the next three stages:1. Examine the most appropriate data on the tooth and jaw bones for the use of the simulation.2. Clear the feeling of the virtual reality system for the students.3. Build up the program, which simulates an intra-oral X-rays, image and examine its precision.ResultsThe data obtained from cone beam CT is best for the simulation because the spatial resolution of that is most high and easy of data conversion.As for a feeling of the use of the virtual space, it was a comparatively good result as for the three dimensional effect.The program, which simulated images of intra-oral radiography, was made using Visual Basic. That simulation image was high precision comparatively.The unresolved problems are the time until an image was made which was long with about five minutes, and the image resolution was not good at original intra-oral radiograph. It could think about the computer system of the higher ability with the necessity to solve these problems.