Team 1

This semester, Team 1 was responsible for creating a computer-generated animation of human mandibular motion. Our project was part of an ongoing research project that began in 1997. The animation built on the work already done in previous semesters. This previous work included the design and manufacture of a mouth motion simulator and the finite element analysis of the human mandible.

The first task that our group worked on was basic research. It was necessary to understand how the jaw moved during chewing and nonchewing movements. After compiling a packet of information, we isolated the three basic movements of the jaw. These movements are opening and closing, protrusion and retrusion, and lateral shift. Specifics on these movements can be found in our project report. The report can be downloaded using the link at the bottom of this page. With this knowledge we were ready to begin our animation.

For our animation, we utilized two different software packages: Pro/Mechanica and 3D Studio Max. In both platforms, our first step was to generate a simple preliminary motion to determine whether the software could create the animation required. We assembled a system of two blocks, one on top of the other, with the lower block acting as the lower jaw. Once we determined that both programs could handle the preliminary animation the lower block was replaced with the jaw and teeth were added. With these parts in place, final adjustments were made to the animations.

After completing the project, there were a couple of aspects that we feel would improve the quality of the animation. The Pro/Mechanica animation could be greatly improved by using a table driver instead of the cosine driver. There were also problems encountered in placing the joint. Unfortunately, time did not permit us to do this ourselves. We suggest that future teams attempt to resolves these issues.

To download a copy of our Project Report in Word97 Format click here.

For information on this site contact: dvess@wam.umd.edu