Journal
PHOTOACOUSTICS
Volume 28, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.pacs.2022.100408
Keywords
Photoacoustic imaging; Periodontitis; Clinical attachment loss; Oral health; Optoacoustics
Categories
Funding
- [R43 DE031196]
- [R21 DE029025]
- [UL1 TR001442]
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This article introduces a transducer for evaluating periodontitis, which uses a combination of photoacoustic and ultrasound imaging to image posterior teeth and assess periodontal pockets. The design of this transducer has a toothbrush shape and includes a side-view transducer for in vivo imaging in the posterior gum area.
Periodontitis is a public issue and imaging periodontal pocket is important to evaluate periodontitis. Regular linear transducers have limitations in imaging the posterior teeth due to their geometry restrictions. Here we characterized a transducer that can image the posterior teeth including assessment of periodontal pockets via a combination of photoacoustic and ultrasound imaging. Unlike conventional transducer design, this device has a toothbrush-shaped form factor with a side-view transducer to image molars (total size: 1 x1.9 cm). A laser diode was integrated as the light source to reduce the cost and size and facilitates clinical transition. The in vivo imaging of a molar of a periodontal patient demonstrated that the transducer could image in the posterior area of gum in vivo; the value determined by imaging was within 7 % of the value measured clinically.
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