Haptic Simulator For Dental Implant Surgery Based On Virtual Reality

One of the current methods used in dental education is the Haptic-based virtual reality simulation which are low cost,safe training and simplifies applications like student assessment.Computer Assisted Surgery(CAS),as an interdisciplinary between information technology and modern medicine,is a hot topic in international research.Computer Assisted Surgery,which breaks through the limitation of traditional surgery,greatly increases the surgery accuracy and success rate,and also has a significant impact on improving the life and health level of human being.This report presented the key technologies of virtual surgery training,with the relevant application systems developed for craniomaxillofacial surgery.As for the virtual surgery training part,this article showed the related algorithms and technologies.In particular,collision detection and haptic force calculation were involved.In order to realize the fast and accurate interaction detection between the virtual surgical instrument and the bone model,an algorithm based on Axis Aligned Bounding Box(AABB)and points is proposed in this article,and the result confirmed the effectiveness of this method.Purpose: Dental implant surgery might lead to some health risks like any other surgery including the infection at the implant site,damage or injury to other surrounding teeth or blood vessels,sinus problems,and nerve damage.The anatomically complex operation in the craniomaxillofacial region is the main cause of certain risks in dental implant surgery.To reach the more desirable development of clinical dentistry skills,during the recent years a diversity of computer-aided technology is used to improve computer-aided technology to simulate the process of the implant surgery through virtual reality techniques.It has been attempted to present a haptic drilling simulator based on virtual reality for dental implant surgery which by that another option is created for novices to improve their hand skill and drilling performance in dental implant surgery.Also applying a virtual reality force feedback haptic device enables trainees to feel the sense of touch of drilling into the jawbone within implant operations.Materials and Methods: The Dental Drilling Simulator is advanced found on few open-source software libraries such as Qt,VTK and CHAI3 D,and by using the haptic based force feedback device Omega.6 as well.In order to attain more desirable effects of drilling based on mesh models,using a recursive algorithm allows subdividing the mesh in which breaks down a triangular patch into four subtriangles.The drilling operation implementation is possible at any specified location of the mesh model.Through a dimension reduction algorithm,as long as drilling direction be determined,the rotation and position of the haptic device would be constrained to the orientation.The driller diameter and drill speed are matched tunable to implement stepwise drilling for the any patient-specific models.Results: Based on virtual reality,a patient-specific drilling simulator for dental implant surgery is obtainable.The simulation of stepwise drilling was applied on three patient-specific models which were reconstructed by CT data,were hired to assist the novices in order to better detection of the suitable drilling parameter.The gained results demonstrated that the haptic-based Dental Drilling Simulator(DDS)can simulate different dental implant surgeries with diverse drill speed and driller diameter which takes patient-specific models as input.DDS provides an effective haptic-based training method to help novice dentists to improve their hand skill and learn more through a safe,cost-effective and efficient alternative to the traditional medical trainings.Medical simulators with vision and haptic feedback techniques.