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BMC Oral Health
Published in: BMC Oral Health 1/2014

Open Access 01-12-2014 | Research article

Identification and adjustment of experimental occlusal interference using functional magnetic resonance imaging

Authors: Masafumi Oda, Kenichi Yoshino, Tatsurou Tanaka, Shunji Shiiba, Eri Makihara, Ikuya Miyamoto, Shinnosuke Nogami, Shinji Kito, Nao Wakasugi-Sato, Shinobu Matsumoto-Takeda, Shun Nishimura, Keita Murakami, Masahiro Koga, Shigenori Kawagishi, Izumi Yoshioka, Shin-ichi Masumi, Mitsutaka Kimura, Yasuhiro Morimoto

Published in: BMC Oral Health | Issue 1/2014

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Abstract

Background

The purpose of this study was to use functional magnetic resonance imaging (fMRI) to quantify changes in brain activity during experimental occlusal interference.

Methods

Fourteen healthy volunteers performed a rhythmical tapping occlusion task with experimental occlusal interference of the right molar tooth at 0 mm (no occlusion), 0.5 mm, and 0.75 mm. The blood-oxygen-level dependent (BOLD) signal was quantified using statistical parametric mapping and compared between rest periods and task periods.

Results

In tapping tasks with experimental occlusal interference of 0.75 mm or 0.5 mm, there was clear activation of the contralateral teeth-related primary sensory cortex and Brodmann’s area 46. At 0 and 30 minutes after removal of the experimental occlusal interference, the activation clearly appeared in the bilateral teeth-related primary sensory cortices and Brodmann’s area 46. At 60 minutes after the removal of the experimental occlusal interference, the activation of Brodmann’s area 46 had disappeared, and only the bilateral teeth-related primary sensory cortices were active.

Conclusions

The present results suggest that adjustments for experimental occlusal interference can be objectively evaluated using fMRI. We expect that this method of evaluating adjustments in occlusal interference, combined with fMRI and the tapping task, could be applied clinically in the future.
Appendix
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Metadata
Title
Identification and adjustment of experimental occlusal interference using functional magnetic resonance imaging
Authors
Masafumi Oda
Kenichi Yoshino
Tatsurou Tanaka
Shunji Shiiba
Eri Makihara
Ikuya Miyamoto
Shinnosuke Nogami
Shinji Kito
Nao Wakasugi-Sato
Shinobu Matsumoto-Takeda
Shun Nishimura
Keita Murakami
Masahiro Koga
Shigenori Kawagishi
Izumi Yoshioka
Shin-ichi Masumi
Mitsutaka Kimura
Yasuhiro Morimoto
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2014
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/1472-6831-14-124

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