Interference of coronal enamel and dentin thickness and ambient light on pulse oximetry interpretation

Silva, Júlio Almeida; Alencar, Ana Helena Gonçalves de; Sestari, Larissa Emanuelle; Barbosa, Higor Almeida; Siqueira, Patrícia Correia; Decúrcio, Daniel de Almeida; Barletta, Fernando Branco; Estrela, Carlos

doi:10.1590/1807-3107bor-2020.vol34.0064

Cited by 3 publications

(5 citation statements)

References 26 publications

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“…In addition, when light is scattered through the enamel and dentin, diffraction also occurs [20,21]. These findings are corroborated by Silva et al [19] in a study of ex vivo molars, in which there was a significant decrease in the oxygen saturation measured by the pulse oximeter when tooth surfaces of 4.0 ± 0.2 mm were interposed, yielding a mean SpO 2 of 92.7%.…”

Section: Discussionsupporting

confidence: 66%

“…A device previously designed [19] to keep sensors parallel to each other and prevent dispersion of the light beam was used in the present study, altering the results. In addition, for clinical use of a pulse oximeter, it is necessary to have sensors adapted for teeth, given that only finger sensors are commercially available [14].…”

Section: Discussionmentioning

confidence: 99%

“…Student's t ‐test for paired samples was considered. The minimum difference between the mean oxygen saturations and the standard deviation was obtained through a study carried out with a methodology like that performed in this research [19]. Thus, fifty‐four teeth from patients seen at the Dental School of UFG were included.…”

Section: Methodsmentioning

confidence: 99%

“…The mould-sensor assembly was attached to a portable workbench vise, on which the participant's right little finger was placed for oxygen saturation and heart rate readings. This mould-sensor assembly was used in a previous study with a similar methodological approach [19]. The measurement was performed twice to obtain the mean, considering the pre-irradiation positive control group.…”

Section: Oxygen Saturation Measurementsmentioning

confidence: 99%

“…Furthermore, particular anatomical features can also interfere with the readings, such as pulp chamber diameter, buccolingual distance and thickness of enamel and dentin in the cervical region [16]. Enamel and dentin thickness contribute towards differences in pulse oximeter readings, considering that molars with greater thickness have different mean SpO 2 levels than those less thick [19].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2023

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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.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Oxygen Saturation Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2023

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Effect of dental tissue thickness on the measurement of oxygen saturation by two different pulse oximeters

et al. 2022

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This study aimed to evaluate the influence of different dental tissue thickness on the measurement of oxygen saturation (SpO2) levels in high (HP) and low (LP) blood perfusion by comparing the values obtained from two different pulse oximeters (POs) - BCI and Sense 10. Thirty freshly extracted human teeth had their crowns interposed between the POs and an optical simulator, which emulated the SpO2 and heart beats per minute (bpm) at HP (100% SpO2/75 bpm) and LP (86% SpO2/75 bpm) modes. Afterwards, the palatine/lingual surfaces of the dental crowns were worn with diamond drills. The reading of SpO2 was performed again using the POs alternately through the buccal surface of each dental crown. Data were analyzed by the Wilcoxon, Mann-Whitney and Kendall Tau-b tests (α=5%). The results showed significant difference at the HP and LP modes in the SpO2 readouts through the different dental thicknesses with the use of BCI, and at the LP mode with the use of Sense 10, which had a significant linear correlation (p<0.0001) and lower SpO2 readout values in relation to the increase of the dental thickness. Irrespective of tooth thickness, Sense 10 had significantly higher readout values (p<0.0001) than BCI at both perfusion modes. The interposition of different thicknesses of enamel and dentin influenced the POs measurement of SpO2, specially at the low perfusion mode. The POs were more accurate in SpO2 measurement when simulated perfusion levels were higher.

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Age-Related Variation of Pulpal Oxygen Saturation in Healthy Primary and Permanent Teeth in Children: A Clinical Study

Igna

Rusu

Ogodescu

et al. 2022

JCM

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(1) Background: Pulse oximetry (PO) is an effective method of dental pulp status monitorization but still lacks practical implementation in dentistry, as well as clear reference values for different tooth types. The study’s aim was to investigate the age-related variation of blood oxygen saturation (SpO2) from the dental pulp during different stages of tooth development in all types of primary and permanent teeth of children. (2) Methods: The pulps of 600 healthy primary and permanent teeth (incisors, canines, premolars, and molars) of patients aged 2–15 years were tested with an adapted PO device, and the results were statistically analyzed; (3) Results: Statistically significant differences (p < 0.05) were found between open-apex and closed-apex teeth and between the canines and other tooth types in both primary and permanent dentitions. (4) Conclusions: Values of SpO2 tended to decrease with age progression in both primary and permanent dentitions. Enamel and dentine thickness and their optical properties and the shape and volume of coronal pulp, which differed among tooth types, seemed to have some influence on the reading as well. The study indicates that factors such as the root development and the tooth type must be taken into account when establishing reference SpO2 values for the dental pulp.

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Interference of coronal enamel and dentin thickness and ambient light on pulse oximetry interpretation

Abstract: Ana Helena Gonçalves de ALENCAR (a) Larissa Emanuelle SESTARI (a) Higor Almeida BARBOSA (a) Patrícia Correia de SIQUEIRA (a) Daniel Almeida DECURCIO (a) Fernando Branco BARLETTA (b) Carlos ESTRELA (a)

Cited by 3 publications

References 26 publications

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

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

Effect of dental tissue thickness on the measurement of oxygen saturation by two different pulse oximeters

Age-Related Variation of Pulpal Oxygen Saturation in Healthy Primary and Permanent Teeth in Children: A Clinical Study

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