Crystallographical analysis of tooth enamel using milligram samples.

Area of Science:

• Materials Science
• Analytical Chemistry
• Biomineralization

Background:

• Tooth enamel's crystalline structure is crucial for its mechanical properties.
• Understanding enamel's crystal composition changes under thermal stress is important for material analysis.

Purpose of the Study:

• To develop and apply an X-ray diffraction microanalytical method for assessing crystal content in tooth enamel.
• To investigate the thermal behavior and phase transformations of enamel's crystalline components.

Main Methods:

• X-ray diffraction microanalysis was performed on tooth enamel powder samples.
• Samples were heated incrementally from room temperature to 1000°C.
• Hydroxyapatite and crystal weights were quantified using standard calibration curves to determine the crystal content ratio.

Main Results:

• Beta-tricalcium phosphate (beta-TCP) was observed to replace hydroxyapatite at elevated temperatures.
• The crystal content ratio in tooth enamel increased with rising temperatures.
• Lattice parameters of enamel apatite and beta-TCP were altered by thermal treatment.

Conclusions:

• X-ray diffraction is a viable technique for analyzing crystal content in milligram enamel samples.
• Thermal treatment induces significant phase transformations and changes in crystal content within tooth enamel.
• The developed method provides insights into the thermal stability and crystalline composition of dental materials.