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Authors: Nélia Alberto 1 ; Rogério Nogueira 2 ; Lídia Carvalho 3 ; Ilda Abe 1 ; Hypolito Kalinowski 4 and João L. Pinto 5

Affiliations: 1 University of Aveiro, Portugal ; 2 Institute of Telecommunications, Portugal ; 3 Dental Prosthesis IPSN, Portugal ; 4 Federal University of Paraná, Brazil ; 5 University of Aveiro; Institute of Telecommunications, Portugal

Keyword(s): Fibre optic sensors, Bragg grating, dental gypsum, water/powder ratio.

Related Ontology Subjects/Areas/Topics: Biomedical Engineering ; Biomedical Instruments and Devices ; Biomedical Sensors

Abstract: In this work, we present a device to measure strain and temperature, based on fibre Bragg grating (FBG) sensors. The performance of these sensors was assessed in the study of a type of dental gypsum, namely high strength dental stone. It was intended to know the influence of the water/powder (W/P) ratios in the setting time and expansion. The results show that, a change in the W/P ratio influences the setting time as well as maximum strain values. The data was compared with the values foreseen in ANSI/ADA specification nº 25. The information that can be obtained with these sensors is quite important to dental prosthesis technicians, in order to achieve more accurate dental prosthesis and these sensors can be a good substitute to the actually device that is used to evaluate the setting expansion: extensometer.

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Paper citation in several formats:
Alberto, N.; Nogueira, R.; Carvalho, L.; Abe, I.; Kalinowski, H. and L. Pinto, J. (2008). STUDY OF DENTAL GYPSUM USING FIBRE SENSORS - Analysis of Different Water/Powder Ratios of High Strength Dental Stone. In Proceedings of the First International Conference on Biomedical Electronics and Devices (BIOSTEC 2008) - Volume 1: BIODEVICES; ISBN 978-989-8111- 17-3; ISSN 2184-4305, SciTePress, pages 232-235. DOI: 10.5220/0001055302320235

@conference{biodevices08,
author={Nélia Alberto. and Rogério Nogueira. and Lídia Carvalho. and Ilda Abe. and Hypolito Kalinowski. and João {L. Pinto}.},
title={STUDY OF DENTAL GYPSUM USING FIBRE SENSORS - Analysis of Different Water/Powder Ratios of High Strength Dental Stone},
booktitle={Proceedings of the First International Conference on Biomedical Electronics and Devices (BIOSTEC 2008) - Volume 1: BIODEVICES},
year={2008},
pages={232-235},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001055302320235},
isbn={978-989-8111- 17-3},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the First International Conference on Biomedical Electronics and Devices (BIOSTEC 2008) - Volume 1: BIODEVICES
TI - STUDY OF DENTAL GYPSUM USING FIBRE SENSORS - Analysis of Different Water/Powder Ratios of High Strength Dental Stone
SN - 978-989-8111- 17-3
IS - 2184-4305
AU - Alberto, N.
AU - Nogueira, R.
AU - Carvalho, L.
AU - Abe, I.
AU - Kalinowski, H.
AU - L. Pinto, J.
PY - 2008
SP - 232
EP - 235
DO - 10.5220/0001055302320235
PB - SciTePress

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