Comparative three-year caries protection from an aluminum-containing and a fluoride-containing toothpaste

Area of Science:

• Dentistry
• Pediatric Dentistry
• Caries Research

Background:

• Dental caries remains a significant public health issue in children.
• The efficacy of various toothpaste formulations in preventing caries is an ongoing area of research.
• Understanding the impact of specific ingredients, like aluminum compounds, is crucial for developing effective oral hygiene products.

Purpose of the Study:

• To evaluate the anticaries efficacy of a toothpaste containing 1.77% potassium aluminum sulfate (KAl(SO4)) compared to a positive control (0.83% sodium monofluorophosphate - NaFPO3).
• To assess the clinical and radiographic caries increment in fifth-graders over a 3-year period.

Main Methods:

• A 3-year randomized clinical trial involving 2,087 fifth-graders (mean age 12 years).
• Participants were assigned to use either a test toothpaste (1.77% KAl(SO4)) or a positive control toothpaste (0.83% NaFPO3) unsupervised at home.
• Clinical caries registrations and bite-wing radiographs were recorded at baseline and after 3 years.

Main Results:

• The group using the aluminum-containing toothpaste exhibited a significantly higher mean caries increment.
• This finding was consistent across both clinical examinations and radiographic assessments.
• The positive control group using sodium monofluorophosphate toothpaste demonstrated better caries prevention.

Conclusions:

• Toothpaste containing 1.77% potassium aluminum sulfate is less effective in preventing dental caries compared to 0.83% sodium monofluorophosphate.
• The results suggest that aluminum sulfate may not be a suitable ingredient for anticaries toothpaste formulations in children.
• Further research may be warranted to explore the mechanisms behind the observed increased caries increment with aluminum-containing toothpaste.