Ultrasonographic evaluation of tongue movement during swallowing in severe skeletal Class III malocclusion in adult patients / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the tongue movement during swallowing in skeletal Class III adult patients using M-mode ultrasonography combined with cushion scanning technique.</p><p><b>METHODS</b>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.</p><p><b>RESULTS</b>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].</p><p><b>CONCLUSIONS</b>The skeletal Class III adult patients had distinctly different tongue movements during swallowing.</p>