Dental fluorosis: A histological study using Light and Confocal microscopy

Area of Science:

• Dental histology
• Mineralized tissue research
• Confocal microscopy applications

Background:

• Dental fluorosis is a public health concern in endemic areas.
• Understanding histological changes is crucial for diagnosis and management.
• Previous studies have utilized various microscopic techniques to examine dental tissues.

Purpose of the Study:

• To characterize the histological features of fluorosed teeth.
• To compare normal and fluorosed dental tissues under light and confocal microscopy.
• To elucidate the microscopic basis of hypomineralization in dental fluorosis.

Main Methods:

• Collection of 25 fluorosed and 5 normal teeth from a fluorosis-endemic region in South India.
• Preparation of ground sections for microscopic examination.
• Staining with acridine orange and observation under light microscopy and confocal microscopy (CFM).

Main Results:

• Significant histological differences were observed between fluorosed and normal teeth.
• Fluorosed teeth exhibited varying degrees of hypomineralization in both enamel and dentin.
• Microscopic analysis revealed alterations in mineral content and crystal structure.

Conclusions:

• Fluoride interacts with mineral and organic components of teeth via ionic and hydrogen bonds.
• These interactions lead to incomplete crystal growth at prism peripheries.
• The observed histological changes, particularly hypomineralization, are a direct consequence of fluoride exposure.