The Microbiology of Caries Resistance



Status:Completed
Conditions:Dental
Therapuetic Areas:Dental / Maxillofacial Surgery
Healthy:No
Age Range:18 - 65
Updated:4/21/2016
Start Date:May 2014
End Date:November 2014

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The Microbiology of Caries Resistance. Subtitle: Functional Amyloid Formation in Streptococcus Mutans

The purpose of this research study is to investigate the bacterial composition of plaque and
saliva located in the mouth and associate that with risk factors that cause cavities.

Pre-Screening - If the subject chooses to be pre-screened for this study they will be asked
to fill out a study registration form and an oral habits/medical history form. They will be
asked to sign an Informed Consent. The subject will then have their teeth and gums examined.
At this visit, the investigator will assess whether or not the subject is a good candidate
for the study. During the phone interview each subject was asked not to brush or floss their
teeth and not to eat or drink anything other than water for 8 hours prior to the
pre-screening visit (Visit 0). If the subject was compliant with these requests, oral
samples will be collected at this pre-screening visit and will now be considered Visit 1
(Baseline). If not, they will be asked to return to the clinic for another visit and asked
not to brush or floss their teeth and not to eat or drink anything other than water 8 hours
prior to that appointment. This visit will then be consider Visit 1 (Baseline).

Visit 1 (Baseline) - The subject will have their medical and dental history reviewed. They
will have their teeth and gums examined. Saliva and plaque will be collected. Each subject
will be given a toothbrush and toothpaste and instructed to not use any other dental
products. This will be considered the "washout" period.

Visit 2 - The subject will be asked to return the unused toothpaste. Their medical and
dental history will be reviewed and they will have their teeth examined. Saliva and plaque
will be collected at this visit. The subjects will then be randomly assigned (by chance,
like the flip of a coin) to the group that will use a marketed fluoride-containing
toothpaste or to the group that will use a marketed arginine containing toothpaste. The
subject will also be instructed not to brush or floss their teeth or eat or drink anything
other than water for 8 hours prior to your next appointment.

Visits 3, 4, and 5 - Subjects will not be allowed to brush or floss their teeth or eat or
drink anything other than water 8 hours prior to these visits. Saliva and plaque will be
collected. On the 5th visit subjects will be asked to return the unused toothpaste tube. At
this time participation in this research study will end and they will be instructed to
return to their regular oral hygiene regiments.

Inclusion Criteria:

- Twenty natural teeth excluding third molars

- No contraindications to dental treatment

- Caries Free

- Caries Active (at least two active sites)

Exclusion Criteria:

- Less that twenty teeth

- Any systemic disease that can cause xerostomia

- Taking medications that cause xerostomia

- Antibiotics last three months

- Advanced Periodontal Disease

- Removable or fixed dental appliances

- Bleeding disorders or taking anticoagulant medications

- Immune compromised individuals

- Participating in another research study

- Used flavored products such as mint flavored candies and chewing gum one week prior
to or during the study

- Uses tobacco products

- Unwilling or unable to provide Informed Consent and follow collection instructions
We found this trial at
1
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Gainesville, Florida 32610
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Gainesville, FL
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