8 March 2016 Assessment of cervical demineralization induced by Streptococcus mutans using swept-source optical coherence tomography
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Abstract
Exposed root surfaces due to gingival recession are subject to biofilm stagnation that can result in caries formation. Cervical enamel and dentin demineralization induced by a cariogenic biofilm was evaluated using swept-source optical coherence tomography (SS-OCT). The cementoenamel junction (CEJ) sections of extracted human teeth were subjected to demineralization for 1, 2, or 3 weeks. A suspension of Streptococcus mutans was applied to form a cariogenic biofilm using an oral biofilm reactor. After incubation, demineralization was observed by SS-OCT. For the analysis of SS-OCT signal, the value of the area under the curve (AUC) of the signal profile was measured. Statistical analyses were performed with 95% level of confidence. Cervical demineralization was displayed as a bright zone in SS-OCT. The demineralization depth of dentin was significantly deeper than that of enamel (p<0.05). Enamel near the CEJ demonstrated a significant increase of AUC over the other enamel region after the demineralization. The gaps along the dentinoenamel junction were additionally observed in SS-OCT. SS-OCT was capable of monitoring the cervical demineralization induced by a cariogenic biofilm and is considered to be a promising modality for the diagnosis of cervical demineralization.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hiroki Tezuka, Hiroki Tezuka, Yasushi Shimada, Yasushi Shimada, Khairul Matin, Khairul Matin, Masaomi Ikeda, Masaomi Ikeda, Alireza Sadr, Alireza Sadr, Yasunori Sumi, Yasunori Sumi, Junji Tagami, Junji Tagami, } "Assessment of cervical demineralization induced by Streptococcus mutans using swept-source optical coherence tomography," Journal of Medical Imaging 3(1), 014504 (8 March 2016). https://doi.org/10.1117/1.JMI.3.1.014504 . Submission:
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