Orthodontic tooth separation activates the hypothalamic area in the human brain / 国际口腔科学杂志·英文版
International Journal of Oral Science
;
(4): 8-8, 2018.
Article
in English
| WPRIM
| ID: wpr-772305
ABSTRACT
OBJECTIVES@#An animal experiment clarified that insertion of an orthodontic apparatus activated the trigeminal neurons of the medulla oblongata. Orthodontic tooth movement is known to be associated with the sympathetic nervous system and controlled by the nucleus of the hypothalamus. However, the transmission of both has not been demonstrated in humans. The purpose of this study were to examine the activated cerebral areas using brain functional magnetic resonance imaging (MRI), when orthodontic tooth separators were inserted, and to confirm the possibility of the transmission route from the medulla oblongata to the hypothalamus.@*METHODS@#Two types of alternative orthodontic tooth separators (brass contact gauge and floss) were inserted into the right upper premolars of 10 healthy volunteers. Brain functional T2*-weighted images and anatomical T1-weighted images were taken.@*RESULTS@#The blood oxygenation level dependent (BOLD) signals following insertion of a brass contact gauge and floss significantly increased in the somatosensory association cortex and hypothalamic area.@*CONCLUSION@#Our findings suggest the possibility of a transmission route from the medulla oblongata to the hypothalamus.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tooth Movement Techniques
/
Brain Mapping
/
Medulla Oblongata
/
Diagnostic Imaging
/
Magnetic Resonance Imaging
/
Healthy Volunteers
/
Hypothalamus
/
Methods
Type of study:
Diagnostic study
Limits:
Humans
Language:
English
Journal:
International Journal of Oral Science
Year:
2018
Type:
Article
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