Gaffar A
Colgate-Palmolive Company, Piscataway, New Jersey, USA.
Compend Contin Educ Dent. 1999;20(1 Suppl):27-33; quiz 35.
Dentinal hypersensitivity results when stimulation causes the fluid in open dentinal tubules to undergo pressure changes, which activates mechanoreceptor nerves and results in pain. Treatment with fluoride varnish forms a protective layer of calcium fluoride that prevents this fluid flow, thereby reducing dentinal sensitivity.
当刺激导致开放牙本质小管中的液体发生压力变化时，就会引发牙本质过敏，这种压力变化会激活机械感受器神经并导致疼痛。使用含氟涂料进行治疗可形成一层氟化钙保护层，防止这种液体流动，从而降低牙本质敏感性。
