A Study to Investigate the Antimicrobial Activity of 2 Test Toothpastes

Not Applicable

Completed

Interventions: Other: Test zinc-IPMP toothpaste
Other: Test zinc non- IPMP toothpaste
Other: SLS negative control
Other: Positive control
Other: non-SLS negative control

Brief Summary: The aim of this exploratory study is to assess the ability of two test toothpastes containing 0.6% w/w zinc chloride stabilised with sodium citrate in a sodium lauryl sulfate (SLS)-containing base to reduce glycolytic metabolism and viability of de novo plaque bacteria using the plaque glycolysis regrowth model (PGRM).

Recruitment & Eligibility

Inclusion Criteria

Demonstrates understanding of the study procedures, restrictions and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form.
Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities in medical history or upon oral examination.
Plaque sample acidogenicity in the pH range 5.0 to 5.7 at Visit.

Exclusion Criteria

Women who are known to be pregnant or who are intending to become pregnant over the duration of the study.
Women who are breast-feeding.
Currently taking antibiotics or have taken antibiotics within 2 weeks of plaque assessment (Visit 2). A participant with any medical history that may prevent them from participating in the study until study conclusion (such as diabetes).
Any sign of grossly carious lesions (active), moderate or severe periodontal conditions, or severe tooth wear.
Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.
Current smokers, or smokers who have quit within 6 months of screening, or participants currently using smokeless forms of tobacco, e.g. Gutkha, Pan containing tobacco, Pan Masala.
Current active caries or periodontitis that may compromise, in the opinion of the investigator, study outcomes or the health of the subject.
Restorations in a poor state of repair that may, in the opinion of the investigator, compromise study outcomes or the health of the participant.
Partial dentures or orthodontic appliances that may, in the opinion of the investigator, compromise study outcomes or the health of the participant.
Recent history (within the last year) of alcohol or other substance abuse.

Arm && Interventions

Group	Intervention	Description
Test zinc-IPMP toothpaste	Test zinc-IPMP toothpaste	Rinse with preprepared slurry of toothpaste in 10 milliliter (mL) water for 60 seconds(s) followed by rinse with 10mL water
Test zinc non- IPMP toothpaste	Test zinc non- IPMP toothpaste	Rinse with preprepared slurry of toothpaste in 10 mL water for 60s followed by rinse with 10mL water
SLS Negative Control	SLS negative control	Rinse with preprepared slurry of toothpaste in 10 mL water for 60s followed by rinse with 10mL water
Positive control Toothpaste	Positive control	Rinse with preprepared slurry of toothpaste in 10 mL water for 60s followed by rinse with 10mL water
non-SLS negative control	non-SLS negative control	Rinse with preprepared slurry of toothpaste in 10 mL water for 60s followed by rinse with 10mL water

Primary Outcome Measures

Name	Time	Method
Area Under the Curve for Glycolysis (AUCgly(0-90)) of Test Zinc-IPMP and Non-SLS Negative Control	Baseline up to 90 minutes (min)	AUCgly(0-90) of Test zinc-IPMP and non-SLS negative control was calculated using trapezoidal method.

Secondary Outcome Measures

Name	Time	Method
AUCgly(0-90) for Test Zinc-IPMP, Test Zinc Non-IPMP, Positive Control, Non-SLS Negative Control and SLS Negative Control	Baseline up to 90 min	AUCgly(0-90) for test zinc-IPMP, test zinc non-IPMP, positive control, non-SLS negative control and SLS negative control was calculated using trapezoidal method.
AUCregrowth(0-90) for Test Zinc-IPMP, Test Zinc Non-IPMP, Positive Control, Non-SLS Negative Control and SLS Negative Control	Baseline up to 90 min	AUCregrowth(0-90) for test zinc-IPMP, test zinc non-IPMP, positive control, non-SLS negative control and SLS negative control was calculated using trapezoidal method.
AUClive:Dead(0-90) for Test Zinc-IPMP, Test Zinc Non-IPMP, Positive Control, Non-SLS Negative Control and SLS Negative Control	Baseline up to 90 min	AUClive:dead(0-90) for test zinc-IPMP, test zinc non-IPMP, positive control, non-SLS negative control and SLS negative control was calculated using trapezoidal method.