1 AIT Asian Institute of Technology

Haptic feedback model for simulation of cylindrical cutting tools interacting with arbitrary 3D objects

AuthorKhanal, Prabal
Call NumberAIT Thesis no.ICT-08-12
Subject(s)Dental technology--Simulation methods

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Information and Communications Technologies, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementThesis ; no. ICT-08-12
AbstractClinical skills training is still following the apprenticeship model: master performs a procedure and students observe them carefully and practice them on operating rooms. Clinical skills can be improved with continuous practice. Practicing on real patients is always a risk. To provide more practice sessions, almost all medical institutions allow their students to practice on manikins. Practicing on manikins, before dealing with real patients, reduces the additional risk to some extent. However, the training using manikins is less effective considering the cost, availability, and lack of rare real-world cases. The new era of medical training evolved after the introduction of a Haptic Device: a device which can give tactile feedback to the users and provide them a sense of touch. This proves to be more effective on providing as many practice sessions as needed, not to forget the consideration of rare cases. A lot of research has already been done on virtual reality based haptic training simulators. In the field of dentistry, haptic dental training simulators are already implemented in few universities, but the dental procedures that those can simulate are very limited. Most of the simulators concentrate on sending appropriate magnitudes of forces to the users in order to simuĀ¬late the feeling of different layers of a tooth. Some research restrict the shape of their tool to a regular object which sometimes becomes inefficient in doings some operations during dental training. Some research has also been done on cutting and drilling with other shapes, however, does this not guarantee the practical applicability due to the lack of formal evaluation processes with real dentists or dental students. This thesis work deals with forces computed during the exploration and cutting of a virtual tooth model. The computed forces are then transmitted to haptic device in a safe manner. A cylindrical-shaped tool has been used as the virtual tool to interact with the virtual tooth. The simulator has also been evaluated by dentists and dental students. This research is a part of a virtual reality based haptic dental training simulation project going on in collaboration with other researchers. The main focus on this reĀ¬search is the force computation and rendering while exploring and cutting a cylindrical tooth model.
Year2008
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. ICT-08-12
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentDepartment of Information and Communications Technologies (DICT)
Academic Program/FoSInformation and Communication Technology (ICT)
Chairperson(s)Dailey, Matthew;Haddawy, Peter;
Scholarship Donor(s)Finland;Asian Institute of Technology Fellowship;
DegreeThesis (M.Eng.) - Asian Institute of Technology, 2008


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