Photoacoustic microscopy of human teeth

Abstract

Photoacoustic microscopy (PAM) utilizes short laser pulses to deposit energy into light absorbers and sensitively detects the ultrasonic waves the absorbers generate in response.

Recent development of photoacoustic imaging in dentistry: A review on studies over the last decade

“…Most studies focus on the ex-vivo application of PAI for the detection of tooth decay ( Arabpou et al, 2019 , Cheng et al, 2016 , El-Sharkawy and El Sherif, 2012 , Khosroshahi and Valizadeh, 2020 , Koyama et al, 2018 , Li and Dewhurst, 2016 , Periyasamy et al, 2018 , Rao et al, 2011 , Sampathkumar et al, 2014 , da Silva et al, 2021 , Tasmara et al, 2023 , Yamada et al, 2016 ). In general, clinical studies of PAI in dentistry assess the pocket depth of periodontal tissues from humans ( Fu, Khazaeinezhad et al, 2022 , Fu, Ling et al, 2022 , Fu et al, 2021 , Lin et al, 2017 , Moore et al, 2018 , Moore et al, 2022 , Mozaffarzadeh et al, 2021 ), and ex-vivo investigations employ samples from human teeth ( Alifkalaila et al, 2021 , Arabpou et al, 2019 , Cheng et al, 2016 , Dias et al, 2018 , El-Sharkawy and El Sherif, 2012 , Khosroshahi and Valizadeh, 2020 , Koyama et al, 2018 , Lee et al, 2017 , Li and Dewhurst, 2016 , Periyasamy et al, 2018 , Rao et al, 2011 , Sampathkumar et al, 2014 , da Silva et al, 2021 , Yamada et al, 2016 ), animal model for mimicking periodontal diseases ( Sari et al, 2022 ), and oral soft tissues from rats ( Widyaningrum et al, 2018 , Widyaningrum et al, 2020 ). PAI was also discovered to be useful in the investigation of dental implants and oral biofilms ( Dias et al, 2018 , Lee et al, 2017 ).…”

“…Table 2 shows the various designs in PAI. The PAI system utilized in dentistry is available in a range of configurations, including PAM ( Alifkalaila et al, 2021 , Rao et al, 2011 , Sari et al, 2022 , da Silva et al, 2021 , Tasmara et al, 2023 , Widyaningrum et al, 2018 , Widyaningrum et al, 2020 ), PAT ( Arabpou et al, 2019 , Cheng et al, 2016 , Li and Dewhurst, 2016 , Yamada et al, 2016 ), photoacoustic ultrasound (PA/US) ( Fu, Khazaeinezhad et al, 2022 , Fu, Ling et al, 2022 , Fu et al, 2021 , Lin et al, 2017 , Moore et al, 2018 , Moore et al, 2022 , Mozaffarzadeh et al, 2021 ), SAW technique ( El-Sharkawy and El Sherif, 2012 ), all-optical PAI (AOPAI) ( Sampathkumar et al, 2014 ), acoustic-resolution PAM (AR-PAM) and PA/US ( Lee et al, 2017 ), photoacoustic spectroscopy ( Dias et al, 2018 ), AR-PAM and PAT ( Periyasamy et al, 2018 ), optical-fiber based PAI system ( Koyama et al, 2018 ), photoacoustic sensors and laser-induced plasma spectroscopy ( Khosroshahi and Valizadeh, 2020 ). PAM is most frequently used to examine oral soft tissues, characterize dental anatomy, and detect dental caries; and AR-PAM with PA/US is applied to image dental implant, jawbone, and teeth in the jawbone.…”

“…PAM is most frequently used to examine oral soft tissues, characterize dental anatomy, and detect dental caries; and AR-PAM with PA/US is applied to image dental implant, jawbone, and teeth in the jawbone. In addition to PAM, PA/US is frequently utilized to image the depth of periodontal pockets ( Alifkalaila et al, 2021 , Lee et al, 2017 , Rao et al, 2011 , da Silva et al, 2021 ).…”

Photoacoustic imaging of teeth for dentine imaging and enamel characterization

“…S-mode images are the slope of each pixel and these images represented the microstructures of teeth. PA microscopy was also used to image the dental structures [18]. The caries and white spot lesions on the tooth were detected with higher resolution.…”

Detection of Photoacoustic Signals from Blood in Dental Pulp

“…Photoacoustic methods have had some dental applications. There have been some reports on the use of photoacoustic imaging for detecting dental caries [14]- [16], and the use of photoacoustic tomography for imaging early caries has recently been proposed [17]. The photoacoustic method is also expected to be used for diagnosing the vitality of dental pulp in the dental tissue because of its ability to reach deeper tissues.…”