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Evaluation of lip sensory disturbance using somatosensory evoked magnetic fields

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Title: Evaluation of lip sensory disturbance using somatosensory evoked magnetic fields
Authors: Maezawa, Hitoshi Browse this author →KAKEN DB
Matsuhashi, Masao Browse this author →KAKEN DB
Yoshida, Kazuya Browse this author →KAKEN DB
Mima, Tatsuya Browse this author →KAKEN DB
Nagamine, Takashi Browse this author →KAKEN DB
Fukuyama, Hidenao Browse this author →KAKEN DB
Keywords: Magnetoencephalography
Inferior alveolar nerve
Sensory deficit
Nerve injury
Somatosensory evoked fields
Issue Date: Feb-2014
Publisher: Elsevier
Journal Title: Clinical Neurophysiology
Volume: 125
Issue: 2
Start Page: 363
End Page: 369
Publisher DOI: 10.1016/j.clinph.2013.07.017
PMID: 24035362
Abstract: Objective: To evaluate lip sensory dysfunction in patients with inferior alveolar nerve injury by lip-stimulated somatosensory evoked fields (SEFs). Methods: SEFs were recorded following electrical lip stimulation in 6 patients with unilateral lip sensory disturbance and 10 healthy volunteers. Lip stimulation was applied non-invasively to each side of the lip with the same intensity using pin electrodes. Results: All healthy volunteers showed the earliest response clearly and consistently at around 25 ms (P25m) and at least one of the following components, P45m, P60m, or P80m, over the contralateral hemisphere. The ranges of the peak latencies were 23-33, 42-50, 56-67, and 72-98 ms for right-side stimulation and 23-34, 46-49, 52-68, and 71-90 ms for left-side stimulation. Affected-side stimulation did not evoke P25m component in any patients, but invoked traceable responses in 5 patients whose latencies were 57, 89, 65, 53, and 54 ms. Unaffected-side stimulation induced P25m in 2 patients at 27 and 25 ms, but not in the other 4 patients. Conclusion: The P25m component of lip SEFs can be an effective parameter to indicate lip sensory abnormality. Significance: Lip sensory dysfunction can be objectively evaluated using magnetoencephalography.
Type: article (author version)
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 前澤 仁志

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