Detection of pulse in oral mucosa and dental pulp by means of optical reflection method

Kyösti Oikarinen (Corresponding Author), Harri Kopola, Matti Mäkiniemi, Esko Herrala

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This paper describes a new system in which optical reflectance is used to test the pulse and vitality of oral mucosa or dental pulp. Radiation at red (660 nm) and near infra‐red (850 nm) wavelengths are directed through a thin probe. The beam is directed into tissue and reflected back. Plethysmography is used to measure the pulse rate from the right forefinger. Reflected radiation is related to plethysmogram using a computer. Preliminary findings relating to the lips, and gingiva in 9 healthy volunteers were promising. Preliminary tests showed that vital and nonvital pulps reflected the radiation differently. Pulpal pulse did not always correspond to plethysmogram from the right Forefinger.
Original languageEnglish
Pages (from-to)54-59
Number of pages6
JournalDental Traumatology
Issue number2
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed


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