Recovery of Impaired Somatosensory Evoked Fields after Improvement of Tongue Sensory Deficits with Neurosurgical Reconstruction

Maezawa, Hitoshi; Tojyo, Itaru; Yoshida, Kazuya; Fujita, Shigeyuki

Recovery of Impaired Somatosensory Evoked Fields after Improvement of Tongue Sensory Deficits with Neurosurgical Reconstruction

Maezawa, Hitoshi; Tojyo, Itaru; Yoshida, Kazuya et al.

Journal of Oral and Maxillofacial Surgery, 2016, 74(7), 1473-1482

Permalink : https://hdl.handle.net/2115/64029

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アクセス権	open access
URI	https://hdl.handle.net/2115/64029
タイトル	Recovery of Impaired Somatosensory Evoked Fields after Improvement of Tongue Sensory Deficits with Neurosurgical Reconstruction
著者	Maezawa, Hitoshi ; Tojyo, Itaru ; Yoshida, Kazuya ; Fujita, Shigeyuki
e-Rad_Researcher 80567727 著者名 Maezawa, Hitoshi
著者名 Tojyo, Itaru
著者名 Yoshida, Kazuya
著者名 Fujita, Shigeyuki
言語	英語
キーワード	magnetoencephalography
	lingual nerve
	sensory deficit
	nerve injury
	MEG
	neurosurgical reconstruction
発行日	2016-01-08
出版者	Elsevier
収録物名	Journal of Oral and Maxillofacial Surgery
巻(号)	74(7)
ページ	1473-1482
抄録	Somatosensory evoked fields (SEFs) induced by tongue stimulation can be useful as an objective parameter to assess sensory disturbances in the tongue. However, whether tongue SEFs can be useful as a clinical, objective follow-up assessment method of tongue sensation following oral surgery is unknown. Here we describe two cases in which tongue SEFs were successfully used in clinical assessment. Two patients with unilateral tongue sensory deficits caused by lingual nerve injury during lower third molar extraction were recruited. Both patients underwent surgery to repair the damaged nerve, and all tongue sensory evaluations were made once before and once after surgery. SEFs were recorded by stimulating the affected and unaffected sides of the tongue separately, and cortical activity was evaluated over the contralateral hemisphere. The unilaterality of the deficit was also assessed. In both patients, stimulation of the unaffected side evoked reproducible cortical responses pre- and post-surgery. Both patients also recovered some sensation following surgery, as pre-surgery stimulation of the affected side failed to evoke cortical activity, whereas post-surgery stimulation evoked cortical activity on both sides. Sensation was initially highly lateralized in both patients, but was restored to approximately normal in the post-surgery evaluation. Finally, both patients’ rated their subjective tongue sensations on the affected side over 50% better after the surgical intervention. These cases indicate that tongue SEFs may have a clinical use as an objective parameter for assessing the course of tongue sensory recovery.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0278-2391
NCID	AA10628202
関連情報	PMID 26855025
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.joms.2016.01.011