Volume 49, Issue S1 pp. 419-425
ORIGINAL RESEARCH

Does irradiation of the tooth structure interfere with oxygen saturation measured by pulse oximetry?—An ex vivo laboratorial study

Maria Luiza Lima Santana

Maria Luiza Lima Santana

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

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Thalles Eduardo Ribeiro

Thalles Eduardo Ribeiro

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

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Julio Almeida Silva

Julio Almeida Silva

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

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Ana Helena Gonçalves de Alencar

Ana Helena Gonçalves de Alencar

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

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Veridiana Resende Novais

Veridiana Resende Novais

Faculdade de Odontologia, Universidade Federal de Uberlândia, Uberlândia, Brazil

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Carlos Estrela

Carlos Estrela

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

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Daniel de Almeida Decurcio

Corresponding Author

Daniel de Almeida Decurcio

Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, Brazil

Correspondence

Daniel de Almeida Decurcio, Federal University of Goiás, School of Dentistry, Praça Universitária s/n, Setor Universitário. CEP: 74605-220, Goiânia, GO, Brazil.

Email: [email protected]

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First published: 10 April 2023

Abstract

The effect of tooth structure subjected to ionising radiation on oxygen saturation levels (SpO2) measured by pulse oximetry was investigated. Fifty-four extracted human third molars were sectioned mesiodistally. Pulse oximeter diodes were placed in prefabricated silicone moulds, secured on a vise with tooth surfaces placed between the diodes and the participant's finger, and SpO2 levels were measured. After that, the tooth surfaces were subjected to ionising radiation in fractionated doses of up to 70 Gy, and SpO2 was measured according to the protocol described. The Kolmogorov–Smirnov test was used for the analysis of normality of the quantitative variables, and Student's t-test compared mean SpO2 levels before and after irradiation. Mean SpO2 after irradiation was 94.6 ± 0.9%, without a statistically significant difference from SpO2 before irradiation, which was 94.7 ± 0.6%. Irradiation of the tooth structure did not interfere with SpO2 levels measured by pulse oximetry.

CONFLICT OF INTEREST STATEMENT

The authors declare that there is no conflict of interest.

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