A1 Refereed original research article in a scientific journal
A Novel Marker Based Method to Teeth Alignment in MRI
Authors: Jean-Marc Luukinen, Daniel Aalto, Jarmo Malinen, Naoko Niikuni, Jani Saunavaara, Päivi Jääsaari, Antti Ojalammi, Riitta Parkkola, Tero Soukka, Risto-Pekka Happonen
Publisher: DE GRUYTER POLAND SP ZOO
Publication year: 2018
Journal: Measurement Science Review
Journal name in source: MEASUREMENT SCIENCE REVIEW
Journal acronym: MEAS SCI REV
Volume: 18
Issue: 2
First page : 79
Last page: 85
Number of pages: 7
ISSN: 1335-8871
DOI: https://doi.org/10.1515/msr-2018-0012
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/31091353
Magnetic resonance imaging (MRI) can precisely capture the anatomy of the vocal tract. However, the crowns of teeth are not visible in standard MRI scans. In this study, a marker-based teeth alignment method is presented and evaluated. Ten patients undergoing orthognathic surgery were enrolled. Supraglottal airways were imaged preoperatively using structural MRI. MRI visible markers were developed, and they were attached to maxillary teeth and corresponding locations on the dental casts. Repeated measurements of intermarker distances in MRI and in a replica model was compared using linear regression analysis. Dental cast MRI and corresponding caliper measurements did not differ significantly. In contrast, the marker locations in vivo differed somewhat from the dental cast measurements likely due to marker placement inaccuracies. The markers were clearly visible in MRI and allowed for dental models to be aligned to head and neck MRI scans.
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