[Ultrasonographic evaluation of tongue movement during swallowing in severe skeletal Class III malocclusion in adult patients].
OBJECTIVE
To investigate the tongue movement during swallowing in skeletal Class III adult patients using M-mode ultrasonography combined with cushion scanning technique.


METHODS
Tongue movement during swallowing in 20 skeletal Class III adult patients (11 females, 9 males, mean age 20.5 years) and 11 healthy adults (8 females, 3 males, mean age 23.5 years) was examined with M-mode ultrasonography combined with cushion scanning technique. The results were compared.


RESULTS
Compared with mature swallowed, the skeletal Class III adult patients had longer phase 2 [(0.24 +/- 0.07) s], phase 3 [(1.17 +/- 0.21) s], longer total duration [(1.98 +/- 0.24) s], faster speed in phase 1 [(3.20 +/- 1.30) mm/s], and smaller range in phase 5 [(0.38 +/- 0.28) mm].


CONCLUSIONS
The skeletal Class III adult patients had distinctly different tongue movements during swallowing.
Xue
Mei
M
Department of Orthodontics, Capital Medical University School of Stomatology, Beijing 100050, China.
Gao
Xiao-Hui
XH
Pang
Xuan-Nai
XN
Bai
Yu-Xing
YX
D000293:Adolescent; D016022:Case-Control Studies; D003679:Deglutition; D005260:Female; D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014059:Tongue / Q000000981:diagnostic imaging*; D014463:Ultrasonography; D055815:Young Adult