Highly efficient optical fiber sensor for instantaneous measurement of elevated temperature in dental hard tissues irradiated with an Nd:YaG laser

Abstract

In this in vitro experiment, the effect of 1.064 µm pulsed laser on both enamel- and dentin-dental tissues has been investigated. A total of fifty-five dental hard tissue samples were exposed to Nd:YAG laser that possesses a pulse width of 9 ns and 850 mJ of total energy. An optical fiber sensor was put behind the samples to measure the temperature instantaneously. A novel, to the best of our knowledge, fiber sensor has been proposed and used to measure the heat generated in dental hard tissues instantaneously after the application of laser irradiation on the tissue surface. This optical sensor exhibits a fast response time of about 1 ms and high sensitivity with about 1.975 nm/°C. The findings of this study in decreasing the probability of pulpal necrosis structure while handling the tooth, whether for ablation, welding, or tooth resurfacing purposes, may establish standards for dentists and laser manufacturers (healthcare professionals) that should be followed.

Phytochemical Quantification and Characterization of Anti- Diabetic Potential of Polyherbal Formulation by FT-IR and GC-MS Analysis

“…Fourier transform-infrared (FTIR) spectroscopy is a tool for the identification of different kinds of chemical bonds or functional groups in herbal medicine in order to obtain the FTIR spectra (fingerprint) of polyherbal formulation powder [22]. For FTIR analysis, the samples of PHF were powdered finely, mixed with KBr and pelletized to prepare the specimen [23]. Then PHF samples were loaded in FTIR-8400 spectrophotometer (Shimadzu, Japan) having a scanning range from 400 to 4000 cm -1 with a resolution of 4 cm -1 .…”