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The Clinical Investigation of Toothpaste as Compared to Toothpaste and Mouthwash in Reducing Plaque and Gingivitis: A Six-week Clinical Study in the US

The Clinical Investigation of Colgate Total Toothpaste as Compared to Crest Pro-Health Toothpaste and Crest Pro-Health Mouthwash, and Crest Cavity Protection Toothpaste and Crest Fluoride Mouthwash in Reducing Plaque and Gingivitis: A Six-week Clinical Study in the US

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02360995
Enrollment
129
Registered
2015-02-11
Start date
2014-06-30
Completion date
2014-08-31
Last updated
2016-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dental Plaque, Gingivitis

Brief summary

The objective of this clinical research study is to evaluate clinical efficacy of Colgate Total Toothpaste as compared to Crest Pro-Health Toothpaste and Crest Pro-Health Mouthwash, and Crest Cavity Protection Toothpaste and Crest Fluoride Mouthwash in reducing gingivitis and dental plaque in adults in a six-week clinical study.

Interventions

Brush whole mouth with Total toothpaste (sold in the US), using a Total 360 toothbrush, 2 times/day for 6 weeks (study duration).

Brush whole mouth with Crest Pro-Health toothpaste using an Oral B Pro-Health toothbrush for 1 minute, 2 times/day for 6 weeks (study duration).

DRUGfluoride toothpaste

Brush whole mouth with Crest Cavity Protection toothpaste using an Oral B Indicator toothbrush for 1 minute, 2 times/day for 6 weeks (study duration).

Immediately after each toothbrushing rinse whole mouth with 20 ml of Crest fluoride Mouthrinse for 30 seconds each time.

Immediately after each toothbrushing rinse whole mouth with 20 ml of Crest Pro-Health Mouthrinse for 30 seconds each time.

Sponsors

Colgate Palmolive
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

1. Subjects, ages 18-70, inclusive. 2. Availability for the six-week duration of the clinical research study. 3. Good general health. 4. Minimum of 20 uncrowned permanent natural teeth (excluding third molars). 5. Initial gingivitis index of at least 1.0 as determined by the use of the Loe and Silness Gingival Index. 6. Initial plaque index of at least 1.5 as determined by the use of the Quigley and Hein Plaque Index (Turesky Modification). 7. Signed Informed Consent Form

Exclusion criteria

1. Presence of orthodontic bands. 2. Presence of partial removable dentures. 3. Tumor(s) of the soft or hard tissues of the oral cavity. 4. Advanced periodontal disease (purulent exudate, tooth mobility, and/or extensive loss of periodontal attachment or alveolar bone). 5. Five or more carious lesions requiring immediate restorative treatment. 6. Antibiotic use any time during the one month prior to entry into the study. 7. Participation in any other clinical study or test panel within the one month prior to entry into the study. 8. Dental prophylaxis during the past two weeks prior to baseline examinations. 9. History of allergies to oral care/personal care consumer products or their ingredients. 10. On any prescription medicines that might interfere with the study outcome. 11. An existing medical condition which prohibits eating or drinking for periods up to 4 hours. 12. History of alcohol or drug abuse. 13. Pregnant or lactating subjects.

Design outcomes

Primary

MeasureTime frameDescription
Dental Plaque ScoresBaselineDental Plaque (Quigley-Hein, Turesky Modification Index) Units on a scale 0 to 5 (0 = no plaque, 1 = separate flecks of plaque on the tooth, 2 = a thin continuous band of plaque, 3 = a band of plaque up to one-third of the tooth, 4 = plaque covering up to two thirds of the of the tooth, 5 = plaque covering two-thirds or more of the crown of the tooth)
Gingivitis ScoresBaselineGingivitis scale (Loe & Silness Gingival Index) Units on a scale 0 to 3 (0 = no inflammation, 1 = Mild inflammation-slight change in color and little change in texture 2 = Moderate inflammation-moderate glazing, redness, edema and hypertrophy. Tendency to bleed upon probing. 3 = Severe inflammation-marked redness and hypertrophy. Tendency to spontaneous bleeding)

Countries

United States

Participant flow

Recruitment details

Subject recruitment is completed locally by the clinical site

Pre-assignment details

There is no wash out or pre-assignment of any study product.

Participants by arm

ArmCount
Total Toothpaste
Triclosan/fluoride toothpaste Triclosan/fluoride toothpaste: Brush whole mouth with Total toothpaste (sold in the US), using a Total 360 toothbrush, 2 times/day for 6 weeks (study duration).
43
Toothpaste + Mouthwash
Stannous fluoride toothpaste & cetylpyridinium chloride Mouthwash stannous fluoride toothpaste & cetylpyridinium chloride Mouthwash: Brush whole mouth with Crest Pro-Health toothpaste using an Oral B Pro-Health toothbrush for 1 minute, 2 times/day for 6 weeks (study duration). Immediately after each toothbrushing rinse whole mouth with 20 ml of Crest Pro-Health Mouthrinse for 30 seconds each time.
43
Control Group
fluoride toothpaste +fluoride mouthwash fluoride toothpaste + fluoride mouthwash: Brush whole mouth with Crest Cavity Protection toothpaste using an Oral B Indicator toothbrush for 1 minute, 2 times/day for 6 weeks (study duration). Immediately after each toothbrushing rinse whole mouth with 20 ml of Crest fluoride Mouthrinse for 30 seconds each time.
43
Total129

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyLost to Follow-up202
Overall StudyWithdrawal by Subject010

Baseline characteristics

CharacteristicTotal ToothpasteToothpaste + MouthwashControl GroupTotal
Age, Continuous44.68 years
STANDARD_DEVIATION 16.85
44.90 years
STANDARD_DEVIATION 15.51
44.39 years
STANDARD_DEVIATION 13.68
44.47 years
STANDARD_DEVIATION 15.26
Region of Enrollment
United States
43 participants43 participants43 participants129 participants
Sex: Female, Male
Female
23 Participants25 Participants24 Participants72 Participants
Sex: Female, Male
Male
20 Participants18 Participants19 Participants57 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
0 / 430 / 430 / 43
serious
Total, serious adverse events
0 / 430 / 430 / 43

Outcome results

Primary

Dental Plaque Scores

Dental Plaque (Quigley-Hein, Turesky Modification Index) Units on a scale 0 to 5 (0 = no plaque, 1 = separate flecks of plaque on the tooth, 2 = a thin continuous band of plaque, 3 = a band of plaque up to one-third of the tooth, 4 = plaque covering up to two thirds of the of the tooth, 5 = plaque covering two-thirds or more of the crown of the tooth)

Time frame: Baseline

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteDental Plaque Scores3.91 units on a scaleStandard Deviation 0.31
Toothpaste + MouthwashDental Plaque Scores3.86 units on a scaleStandard Deviation 0.45
Control GroupDental Plaque Scores3.84 units on a scaleStandard Deviation 0.23
Comparison: The null hypothesis states that there is no difference between groups.p-value: 0.652ANOVA
Primary

Dental Plaque Scores

Dental Plaque (Quigley-Hein, Turesky Modification Index) Units on a scale 0 to 5 (0 = no plaque, 1 = separate flecks of plaque on the tooth, 2 = a thin continuous band of plaque, 3 = a band of plaque up to one-third of the tooth, 4 = plaque covering up to two thirds of the of the tooth, 5 = plaque covering two-thirds or more of the crown of the tooth)

Time frame: 4 weeks

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteDental Plaque Scores3.42 units on a scaleStandard Error 0.06
Toothpaste + MouthwashDental Plaque Scores3.69 units on a scaleStandard Error 0.06
Control GroupDental Plaque Scores3.73 units on a scaleStandard Error 0.06
Comparison: The null hypothesis states that there is no difference between groups.p-value: <0.001ANCOVA
Primary

Dental Plaque Scores

Dental Plaque (Quigley-Hein, Turesky Modification Index) Units on a scale 0 to 5 (0 = no plaque, 1 = separate flecks of plaque on the tooth, 2 = a thin continuous band of plaque, 3 = a band of plaque up to one-third of the tooth, 4 = plaque covering up to two thirds of the of the tooth, 5 = plaque covering two-thirds or more of the crown of the tooth)

Time frame: 6 weeks

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteDental Plaque Scores1.05 units on a scaleStandard Error 0.04
Toothpaste + MouthwashDental Plaque Scores1.15 units on a scaleStandard Error 0.04
Control GroupDental Plaque Scores1.24 units on a scaleStandard Error 0.04
Comparison: The null hypothesis states that there is no difference between groups.p-value: <0.001ANCOVA
Primary

Gingivitis Scores

Gingivitis scale (Loe & Silness Gingival Index) Units on a scale 0 to 3 (0 = no inflammation, 1 = Mild inflammation-slight change in color and little change in texture 2 = Moderate inflammation-moderate glazing, redness, edema and hypertrophy. Tendency to bleed upon probing. 3 = Severe inflammation-marked redness and hypertrophy. Tendency to spontaneous bleeding)

Time frame: Baseline

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteGingivitis Scores1.38 units on a scaleStandard Deviation 0.22
Toothpaste + MouthwashGingivitis Scores1.35 units on a scaleStandard Deviation 0.24
Control GroupGingivitis Scores1.41 units on a scaleStandard Deviation 0.24
Comparison: The null hypothesis states that there is no difference between groups.p-value: 0.533ANOVA
Primary

Gingivitis Scores

Gingivitis scale (Loe & Silness Gingival Index) Units on a scale 0 to 3 (0 = no inflammation, 1 = Mild inflammation-slight change in color and little change in texture 2 = Moderate inflammation-moderate glazing, redness, edema and hypertrophy. Tendency to bleed upon probing. 3 = Severe inflammation-marked redness and hypertrophy. Tendency to spontaneous bleeding)

Time frame: 4 weeks

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteGingivitis Scores1.15 units on a scaleStandard Error 0.04
Toothpaste + MouthwashGingivitis Scores1.20 units on a scaleStandard Error 0.04
Control GroupGingivitis Scores1.30 units on a scaleStandard Error 0.04
Comparison: The null hypothesis states that there is no difference between groups.p-value: <0.001ANCOVA
Primary

Gingivitis Scores

Gingivitis scale (Loe & Silness Gingival Index) Units on a scale 0 to 3 (0 = no inflammation, 1 = Mild inflammation-slight change in color and little change in texture 2 = Moderate inflammation-moderate glazing, redness, edema and hypertrophy. Tendency to bleed upon probing. 3 = Severe inflammation-marked redness and hypertrophy. Tendency to spontaneous bleeding)

Time frame: 6 weeks

ArmMeasureValue (MEAN)Dispersion
Total ToothpasteGingivitis Scores1.05 units on a scaleStandard Error 0.04
Toothpaste + MouthwashGingivitis Scores1.15 units on a scaleStandard Error 0.04
Control GroupGingivitis Scores1.24 units on a scaleStandard Error 0.04
Comparison: The null hypothesis states that there is no difference between groups.p-value: <0.001ANCOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026