Study: NCT04763044

Intervention type: DRUG
Group type: OTHER
Intervention: 0 ppm F
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 0 ppm F
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 0 ppm F
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 0 ppm F
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 250 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 250 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 250 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 250 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 1100 ppm as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 1100 ppm as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 1100 ppm as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 1100 ppm as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 2800 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 2800 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 2800 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 2800 ppm F as MFP
Description: Each subject will be randomly assigned to this treatment during one of the four periods for this crossover study.

Intervention type: DRUG
Group type: OTHER
Intervention: 1100 ppm SnF2
Description: Each subject will be assigned to this treatment during the fifth period for this crossover study.