The distribution pattern of fluoride concentrations in human cementum

Area of Science:

• Dental research
• Biomineralization studies
• Trace element analysis in human tissues

Background:

• Fluoride is known to incorporate into tooth structure.
• Understanding fluoride distribution in cementum is crucial for assessing its role in dental health and aging.
• Previous studies indicated fluoride concentration gradients in cementum.

Purpose of the Study:

• To quantitatively determine the distribution of fluoride across human cementum.
• To investigate variations in fluoride concentration gradients within cementum.
• To explore individual-specific patterns of fluoride distribution in cementum.

Main Methods:

• Analysis of 59 human teeth from five post-mortem subjects across a range of ages (30-70 years).
• Examination of multiple tooth types per subject, including an in-depth analysis of teeth from a 54-year-old subject.
• Measurement of fluoride (F) concentrations across cementum layers.

Main Results:

• Fluoride concentrations were generally higher towards the cementum surface.
• Significant variations in fluoride gradients were observed between different teeth and subjects.
• Each subject exhibited a characteristic 'family of profiles' for fluoride distribution, indicating individual specificity.

Conclusions:

• Human cementum exhibits a distinct fluoride distribution pattern, with higher concentrations at the surface.
• Individual variability in cementum fluoride profiles is substantial.
• These findings highlight the potential for personalized assessment of fluoride incorporation in dental tissues.