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Photoacoustic Imaging Technique Measures Periodontal Health

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Using squid ink as a contrast agent for a photoacoustic imaging technique, researchers have developed a dental imaging method for assessing gum health that is noninvasive, comprehensive and accurate. The photoacoustic method can image the entire pocket depth around the teeth at once, without the poking and prodding that typically accompanies the use of a periodontal probe, considered the “gold standard” tool for periodontal examinations. In addition to being invasive and even painful for the patient, the periodontal probe allows only one measurement to be taken at a time. ...Read full article

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    Published: September 2017
    Glossary
    photoacoustic imaging
    Abbreviated PAI. An imaging modality with a hybrid technique based on the acoustic detection of optical absorption from endogenous chromophores or exogenous contrast agents. Light is absorbed by the chromophores and converted into transient heating, and through thermoelastic expansion there is a resulting emission of ultrasonic waves. In tissue, ultrasound scatters less than light, therefore PAI generates high-resolution images in the diffusive and optical ballistic regimes compared to purely...
    Research & TechnologyeducationAmericasImagingLasersBiophotonicsphotoacoustic imagingmedicaldentalperiodontalultrasoundbioimagingBioScan

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