3D Dental Subsurface Imaging Using Enhanced Truncated Correlation-Photothermal Coherence Tomography.

Area of Science:

• Biomedical Optics
• Dental Imaging
• Medical Physics

Background:

• Accurate dental imaging is vital for high-quality care, particularly for early caries detection and treatment monitoring.
• Current radiographic methods lack sensitivity for small lesions and use ionizing radiation, limiting frequent monitoring.
• There is a need for advanced, non-ionizing imaging technologies in dentistry.

Purpose of the Study:

• To introduce and evaluate enhanced Truncated Correlation-Photothermal Coherence Tomography (eTC-PCT) for dental imaging applications.
• To assess the capability of eTC-PCT for depth-resolved 3D subsurface imaging of dental defects.
• To compare the sensitivity of eTC-PCT for dental caries detection against conventional methods.

Main Methods:

• Application of eTC-PCT, a non-invasive and non-ionizing optical imaging technique, to dental samples.
• Demonstration of 3D subsurface imaging with operator-controlled axial resolution.
• Comparative analysis of eTC-PCT imaging with visual examination, X-rays, and micro-CT.

Main Results:

• eTC-PCT successfully provided depth-resolved tomographic 3D reconstructions of dental defects.
• The technique showed potential for sensitive detection of dental caries.
• Imaging operated safely below the maximum permissible exposure (MPE) limit.

Conclusions:

• eTC-PCT is a promising non-ionizing technology for advanced dental imaging.
• This method offers superior subsurface visualization compared to traditional techniques.
• eTC-PCT has the potential to significantly improve early dental caries detection and monitoring.