Influence of metal artifacts on the creation of individual 3D cranio-mandibular Models

Shintaro Kasama*, Takumi Ogawa, Tomoko Ikawa, Yuko Shigeta, Shinya Hirai, Shunji Fukushima, Asaki Hattori, Naoki Suzuki

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In our clinic, the four-dimensional analysis of mandibular movement has mainly been used to diagnose jaw function disorders. In present, we are considering its application for patients with occlusal issues. Consequently, an improvement in system accuracy is required. However, metal artifacts cause distortions in the 3D-cranio-mandibular model construction process, which leads to accuracy concerns. The purpose of this present study was to grasp the accuracy differences caused by the oral metal restorations in reconstructed 3D-craniomandibular models from CT data, and scanned dentition models. The accuracy of the reconstruction was confirmed from comparing the occlusal contacts in VR space and real space. The VR contact areas in the dry skulls without and moderate restoration showed a close similarity to real occlusal contacts. However, the VR contact areas in the dry skull with numerous restorations was not similar to the real contacts. From these results, it is considered that metal artifacts decrease the accuracy of model reconstruction.

Original languageEnglish
Title of host publicationMedicine Meets Virtual Reality 18
Subtitle of host publicationNextMed, MMVR18
PublisherIOS Press
Number of pages3
ISBN (Print)9781607507055
Publication statusPublished - 2011
Externally publishedYes

Publication series

NameStudies in Health Technology and Informatics
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365


  • 3D-cranio-mandibular model
  • occlusal contacts

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management


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