Can the laser pointer diagnose bad teeth?
Use a special laser pointer to find out whether the tooth is suffering from caries. Yesterday, it was learned from Wuhan University Dental Hospital that a new detection method introduced by the hospital can quickly and accurately detect caries. The principle of laser pointer diagnosis of caries is to use the visible laser in the blue-green range as the irradiation source; after the tooth surface tissue absorbs the laser, it will produce different degrees of fluorescence; the fluorescence response of the severely demineralized parts and the caries parts is higher than the normal hard tissue response Strong; the probe converts the different fluorescent reactions into signals and turns them into data display. If the value exceeds the normal value, it means that the tooth under examination has been demineralized, is in danger of caries or has developed into caries, and requires relevant treatment.
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According to the different roles of Laser pointer in dental applications, there are several different laser systems. One of the important characteristics that distinguish lasers is: the wavelength of light, different wavelengths of lasers have different effects on tissues. The light in the visible and near-infrared spectrum has low light absorption and strong penetrability, and it can penetrate into the tooth tissue. Deep parts, such as argon ion laser, diode laser or Nd:YAG laser. The Er: YAG laser and CO, the laser has poor light penetration and can only penetrate the tooth tissue about 0.01 mm. The second important feature that distinguishes lasers is: the intensity (ie power) of the laser, such as the diode laser used in diagnostics, its intensity is only a few milliwatts, and it can sometimes be used on laser displays.
2021-09-30 07:39:10
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