Assessment of hypersensitivity reduction of a dentifrice containing 0.3% triclosan, 2.0% PVM/MA copolymer, 0.243% NaF and specially-designed silica as compared to a dentifrice containing 0.454% stannous fluoride, sodium hexametaphosphate and zinc lactate and to a dentifrice containing 0.243% NaF on dentin hypersensitivity reduction: an 8-week study.
OBJECTIVE
To evaluate the 8-week dentin hypersensitivity efficacy of three toothpastes: (1) a dentifrice containing 0.3% triclosan, 2.0% PVM/MA copolymer, 0.243% sodium fluoride and specially-designed silica (Test Dentifrice 1); (2) a commercially-available dentifrice containing 0.454% stannous fluoride in a silica base with sodium hexametaphosphate and zinc lactate (Test Dentifrice 2); and (3) a commercially-available non-sensitive dentifrice containing 0.243% sodium fluoride in a silica base (Negative Control Dentifrice).


METHODS
For this 8-week randomized controlled clinical study, qualifying subjects had to have at least two hypersensitive teeth with a tactile hypersensitivity score (Yeaple Probe) between 10 and 50 grams of force, and air blast hypersensitivity score of 2 or 3 (Schiff Cold Air Sensitivity Scale). Subjects brushed twice daily for 1 minute, using the assigned toothpaste and toothbrush. Dentin hypersensitivity assessments, as well as examinations of oral hard and soft tissues, were conducted at the baseline examination and after 4 and 8 weeks of brushing.


RESULTS
118 subjects complied with the protocol, and completed the 8-week study. At baseline, the mean tactile sensitivity scores for toothpastes (1), (2) and (3) were 13.6, 14.1 and 13.1; at 4 weeks 28.75, 20.13, and 20.00; and after 8 weeks 33.1, 24.0 and 20.5, respectively. The mean air blast scores for toothpastes (1), (2), and (3) at baseline were 2.5, 2.5, and 2.4; at 4 weeks 1.25, 1.50 and 1.85; and after 8 weeks 0.99, 1.36 and 1.5, respectively. At all time points after the baseline examination, for both tactile and air blast sensitivity scores, the differences between Test Dentifrice 1 and the Negative Control Dentifrice were statistically significant (P < 0.05). The differences between Test Dentifrice 1 and Test Dentifrice 2 were statistically significant (P < 0.05) at 4 and 8 weeks after baseline examination for tactile sensitivity scores and at 8 weeks after baseline examination for air blast sensitivity scores.
Colgate-Palmolive Technology Center, 909 River Road, Piscataway, NJ 08854, USA. Pat_Chaknis@colpal.com
Patricia
P
Chaknis
Fotinos S
FS
Panagakos
William
W
DeVizio
Joseph
J
Sowinski
Dolores
D
Petrone
Howard
H
Proskin
D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D016009:Chi-Square Distribution; D057133:Dentin Desensitizing Agents / Q000737:chemistry / Q000627:therapeutic use*; D003807:Dentin Sensitivity / Q000517:prevention & control*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008298:Maleates; D008875:Middle Aged; D010710:Phosphates; D011095:Polyethylenes; D011446:Prospective Studies; D012822:Silicon Dioxide; D012969:Sodium Fluoride; D014002:Tin Fluorides; D014100:Toothpastes / Q000737:chemistry / Q000627:therapeutic use*; D014260:Triclosan; D055815:Young Adult; D015032:Zinc
D057133:Dentin Desensitizing Agents; D008298:Maleates; D010710:Phosphates; D011095:Polyethylenes; D014002:Tin Fluorides; D014100:Toothpastes; D014260:Triclosan; D012822:Silicon Dioxide; D012969:Sodium Fluoride; C043105:poly(methyl vinyl ether-co-maleic anhydride); D015032:Zinc; C009285:sodium polymetaphosphate