Objective identification of dental abnormalities with multispectral fluorescence imaging

Area of Science:

• Biomedical Optics
• Dental Diagnostics
• Microbial Metabolism

Background:

• Sensitive methods for early detection of dental diseases like caries and calculus are crucial for effective clinical practice.
• Optical spectroscopic approaches offer rich molecular information and require minimal sample preparation, making them promising for dental diagnostics.

Purpose of the Study:

• To demonstrate the objective identification of dental caries and calculus using multispectral fluorescence imaging on extracted teeth.
• To investigate spectral differences related to bacterial metabolism and infection spread in dental tissues.

Main Methods:

• Utilizing multispectral fluorescence imaging to analyze extracted teeth with control, carious, and calculus conditions.
• Attributing spectral differences to porphyrin pigment content, a byproduct of bacterial metabolism.
• Generating spectral maps using porphyrin bands to visualize infection spread and calculating fluorescence intensity ratios.

Main Results:

• Objective identification of dental caries and calculus was achieved using multispectral fluorescence imaging.
• Statistically significant differences in fluorescence intensity ratios were observed among control, carious, and calculus groups.
• Spectral maps provided insights into the spread of bacterial infection based on porphyrin distribution.

Conclusions:

• Multispectral fluorescence imaging can objectively differentiate between healthy, carious, and calculus-affected teeth.
• The method's ability to map infection spread offers advantages over traditional laser-induced fluorescence for dental monitoring.
• Clinical adoption of this technique can support dentists in timely diagnosis and treatment of dental diseases.