Discrimination of tooth composition through temporally shaped femtosecond laser-induced breakdown spectroscopy
Source abstract
Abstract
Dental caries has attracted widespread concern because of its universality. However, the current diagnosis of dental caries depends largely on naked eyes and dentists' experience, which causes considerable randomness and inaccuracy in the diagnosis. In this study, temporally shaped double pulse (DP) femtosecond laser-induced breakdown spectroscopy (LIBS) has been used for tooth composition detection for the first time. Under the laser fluence of 20 J/cm2, the spectra intensity for DP LIBS with a pulse delay of 200 ps was 13 times higher than that of single pulse. For further prediction, the detection model based on DP LIBS and partial least squares discrimination analysis could discriminate dentin, enamel, and caries with a prediction accuracy of above 90%. This method may provide rapid and accurate feedback to dentists for real-time diagnosis in the future.
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Research context
OpenAlex topics: Laser-induced spectroscopy and plasma · Cultural Heritage Materials Analysis · Forensic Fingerprint Detection Methods
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Humanities and Social Sciences, Beijing Institute of Technology 1 , Beijing 100081, China
Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology 2 , Beijing 100081, China
Funding
NNSFC
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