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Study on High-Dosage Fluoride Toothpaste for Patients with Dental Root Caries

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What is this trial about?

A plain-language summary of the goals, design and what participants do

This clinical trial is focused on studying the effects of using a high-dosage fluoride toothpaste to control dental root caries, which are cavities that form on the roots of teeth. The study compares a high-dosage fluoride toothpaste, specifically Duraphat with a fluoride concentration of 5,000 parts per million (ppm), to a normal fluoride toothpaste with a concentration of 1,450 ppm. The aim is to see if the higher concentration of fluoride can better stop the development of root caries and prevent new ones from forming, even without the usual cleaning of the teeth to remove plaque.

The trial involves using these toothpastes on experimental samples to observe the effects on dental root health. The main focus is on how much mineral is lost or gained in the dental roots when using these toothpastes. Additionally, the study will measure the amount of fluoride present in saliva and the plaque that forms on the dental roots. This research is important for understanding how different fluoride concentrations can impact dental health, particularly in preventing and controlling root caries.

The research process

The trial runs in 5 steps – from screening to follow-up. Each step says what happens and what the team monitors.

  1. Step 1

    Joining the study

    Upon joining the study, eligibility is confirmed based on criteria such as being 18 years or older and having a lower partial denture.

  2. Step 2

    Initial instructions

    Receive detailed instructions on how to use the high-dosage fluoride toothpaste provided for the study.

    Understand the purpose of the study, which is to assess the effectiveness of a 5,000 ppm fluoride toothpaste compared to a 1,450 ppm fluoride toothpaste in controlling dental root caries.

  3. Step 3

    Toothpaste usage

    Use the provided fluoride toothpaste as directed. The toothpaste is to be used orally.

    The frequency and duration of toothpaste use will be specified by the study coordinators.

  4. Step 4

    Monitoring and assessments

    Participate in regular assessments to monitor the mineral loss or uptake in dental root slabs.

    The study will also measure the fluoride concentration in saliva and biofilm.

  5. Step 5

    Completion of study

    The study is expected to conclude by August 1, 2024.

    Upon completion, results will be analyzed to determine the effectiveness of the high-dosage fluoride toothpaste in controlling root caries.

Who can join the trial?

2 criteria

  • Must be 18 years old or older.
  • Must have a lower partial denture (a removable dental appliance that replaces some missing teeth in the lower jaw).

Who cannot join the trial?

5 criteria

  • Patients who are not within the specified age range for the study.
  • Patients who are part of a vulnerable population, which means groups of people who might need special protection or care.
  • Patients who have any medical conditions that might interfere with the study or its results.
  • Patients who are unable to use the study's toothpaste as required.
  • Patients who are not willing or able to follow the study procedures.
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Investigated drugs

Fluoride Toothpaste is a special type of toothpaste that contains fluoride, a mineral that helps protect teeth from decay. In this clinical trial, the toothpaste is used to see if it can help stop or slow down the formation of cavities on the roots of teeth. The trial compares a high-dosage fluoride toothpaste with a normal fluoride toothpaste to find out which one is more effective in preventing root cavities. The high-dosage toothpaste has more fluoride, which might make it better at protecting teeth, even without brushing to remove plaque.

What is already known about the treatment

High-dosage fluoride toothpaste – This medication is administered in the form of toothpaste and is applied directly to the teeth during regular brushing. It is currently being studied in clinical trials to determine its effectiveness in controlling root caries, a type of tooth decay. The main therapeutic indication is to prevent and arrest the formation of root caries lesions. At the molecular level, fluoride works by enhancing the remineralization of tooth enamel and inhibiting the demineralization process, thereby strengthening the teeth and making them more resistant to decay. This medication falls under the pharmacological classification of dental caries prophylactic agents.

Investigated diseases

Dental Caries – Dental caries, commonly known as tooth decay, is a process where the hard surface of the teeth is damaged due to acids made by bacteria. It begins with the demineralization of the tooth enamel, leading to the formation of cavities. If untreated, the decay can progress deeper into the tooth, affecting the dentin and potentially reaching the pulp. This progression can cause pain and sensitivity, especially when consuming hot, cold, or sweet foods. Over time, the structural integrity of the tooth can be compromised, leading to further complications. The presence of fluoride can help in remineralizing the enamel and slowing down the progression of caries.
Trial detailsLast updated 7 Oct 2026
Age18+ yearsPhasePhase IIITrial ID2022-500059-22-01Estimated enrolment10 patientsSponsorAarhus University

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