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Quintessence Publishing: Journals: OFPH
Journal of Oral & Facial Pain and Headache

Edited by Barry J. Sessle, BDS, MDS, BSc, PhD, FRSC

Official Journal of the American Academy of Orofacial Pain,
the European, Asian, and Ibero-Latin Academies of Craniomandibular
Disorders, and the Australian Academy of Orofacial Pain

ISSN 2333-0384 (print) • ISSN 2333-0376 (online)

Winter 2003
Volume 17 , Issue 1

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Bruxism Force Detection by a Piezoelectric Film-Based Recording Device in Sleeping Humans

Kazuyoshi Baba, DDS, PhD, Glenn T. Clark, DDS, MS, Tatsutomi Watanabe, DDS, PhD, Takashi Ohyama, DDS, PhD

Pages: 58–64
PMID: 12756932

Aims: To test the reliability and utility of a force-based bruxism detection system (Intra-Splint Force Detector [ISFD]) for multiple night recordings of forceful tooth-to-splint contacts in sleeping human subjects in their home environment. Methods: Bruxismtype forces, ie, forceful tooth-to-splint contacts, during the night were recorded with this system in 12 subjects (6 bruxers and 6 controls) for 5 nights in their home environment; a laboratorybased nocturnal polysomnogram (NPSG) study was also performed on 1 of these subjects. Results: All 12 subjects were able to use the device without substantial difficulty on a nightly basis. The bruxer group exhibited bruxism events of significantly longer duration than the control group (27 seconds/hour versus 7.4 seconds/ hour, P < .01). A NPSG study performed on 1 subject revealed that, when the masseter muscle electromyogram (EMG) was used as a “gold standard,” the ISFD had a sensitivity of 0.89. The correlation coefficient between the duration of events detected by the ISFD and the EMG was also 0.89. Conclusion: These results suggest that the ISFD is a system that can be used easily by the subjects and that has a reasonable reliability for bruxism detection as reflected in forceful tooth-to-splint contacts during sleep. J OROFAC PAIN 2003;17:58–64.

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