79
Participants
Start Date
September 30, 2011
Primary Completion Date
September 30, 2011
Study Completion Date
September 30, 2011
control dentifrice
use the dentifrice to brush teeth twice a day for one minute for 3 days
strontium chloride/potassium nitrate dentifrice
use the dentifrice to brush teeth twice daily for 3 days
the State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China, Chengdu
Sun Yat-sen University
OTHER