TheraBreath Toothpaste Study conducted by Princeton Consumer Research

Thanks for visiting to learn more about the recent study conducted by PRINCETON CONSUMER RESEARCH using the test article, TheraBreath Toothpaste.

A randomized, double blind study in 64 subjects to evaluate the efficacy of one test article to control the breath odour 13 hours after a single use compared to an untreated control group and a positive control group using hedonic assessments

The study concluded: "that for the test articles the claims of 'breath freshening' and 'freshens breath for over 12 hours' are valid."

Summary of Results


The study was performed at Princeton Consumer Research, Princeton Forrestal Center, 307 College Road East, Princeton, NJ, 08540, USA, between 13th October 2014 and 24th October 2014.


64 subjects were recruited into the study and 49 subjects completed the study. Eight subjects were removed from the study for non-compliance or withdrew due to reasons unrelated to the study.


No adverse events or reactions were reported. All subjects completed the study.


There was no statistically significant difference for the pre-treatment assessments between the test groups for any of the judges or between judges (p>0.05) so the study can be considered valid. Both the Test Article and Positive Control showed a highly statistically significant difference to the untreated baseline sites (p<0.005) in all assessments. All judges were statistically similar at all-time points and sites (p>0.05) and so assessments can be considered as accurate.


Baseline treatment assessments:
  J1 J2 J3 J4 Average
Mean Group 1 6.06 6.11 6.06 6.11 6.08
Mean Group 2 5.83 5.72 5.72 5.72 5.75
Mean Group 3 5.75 5.69 5.44 5.50 5.59
1 hour treatment assessments:
  J1 J2 J3 J4 Average
Mean Group 1 3.67 3.56 3.22 4.06 3.63
Mean Group 2 3.50 3.33 3.22 3.28 3.33
Mean Group 3 5.50 5.50 5.25 5.13 5.34
13 hours treatment assessments:
  J1 J2 J3 J4 Average
Mean Group 1 4.06 4.00 4.00 4.06 4.03
Mean Group 2 4.17 3.94 4.06 4.06 4.06
Mean Group 3 6.13 6.13 5.88 5.88 6.00
Within-treatment P-value Assessments:
  1 2 3
bl vs 1 2.57E-09 5.94E-11 3.73E-02
bl vs 13 1.30E-06 3.89E-04 7.09E-02

It can be concluded that for the test articles the claims of "breath freshening" and "freshens breath for over 12 hours" are valid.

For a complete copy of this study, please send a written request to:

Dr. Harold Katz, LLC
ATTN: Clinical Study Request
5802 Willoughby Ave
Los Angeles, CA 90038

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