Methods: 50 patients (126 teeth) with dentine hypersensitivity were treated with Green OrTM.方法：随机选择50例（126颗牙）牙本质敏感患者，用极固宁治疗。
Objective: To study the effect of Green OrTM in the treatment of dentine hypersensitivity.摘要目的：探讨极固宁治疗牙本质敏感的临床疗效。