Modeling of digital dental articulator and its accuracy verification using optical measurement

Computer Methods and Programs in Biomedicine
Hong-Tzong YauChia-Hao Chang

Abstract

Temporomandibular joint has been considered one of the most complex joints in human body. Dental articulation hinged upon temporomandibular joint is essential and fundamentally important for dental restoration design and prosthetic/orthodontic occlusion analysis. As digital dentistry rapidly grows, a complete digital work flow requires the use of a digital articulator for occlusion analysis. However, commercial CAD/CAM systems do not provide any method to verify the modeling accuracy of a digital articulator. There is also a lack of detail and generalized mathematical modeling of the digital articulator for simulating the jaw movement. This paper presents the development of a digital articulator by mathematically modeling a general dental articulator which simulates the relative jaw motion between the maxilla and mandible. As the digital articulator moves, the digital upper teeth move relatively to the digital lower teeth, thus simulating the occlusal path with teeth collision detection function. To verify the accuracy of our modeled digital articulator, an improved optical tracking method is proposed to measure the pose of a mechanical articulator with 6 degrees of freedom and compare that with the digital articulator. The dig...Continue Reading

References

Nov 14, 2000·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·E N Starcke
Apr 6, 2002·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Edgar N Starcke
May 22, 2010·IEEE Transactions on Pattern Analysis and Machine Intelligence·Mark Fiala
Sep 2, 2014·Journal of Clinical and Diagnostic Research : JCDR·Pavankumar Ravi Koralakunte, Mohammad Aljanakh

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