Chewing on a piece or two of gum, it seems, helps force fluids back into the stomach and flood the esophagus with alkaline saliva, neutralizing acids that cause the characteristic burning sensations.
Jaw muscles can provide about 200 pounds of force to bring the back teeth together for chewing.
颚肌可提供约200磅(90.72公斤)的力量，以便臼齿合拢咀嚼。
3
Food impaction is the phenomenon appearing in the chewing course when the food dregs or fibers are pushed into the clearance by occlusal force or owning to the gingival shrinkage.