Sugar solutions on the surface of exposed dentine cause water to be drawn out of the dentinal tubules causing which distorts the odontoblast causing pain.
[医
英语]《专业术语—
腔生理学术语O2(英
详解)》正
: Osmotic pressure - Water tends to move towards dense concentrations of ions.
场漫长而

们说铜具有延展性。

从躲藏
切都拿出来


