Determination of setting expansion of dental materials using fibre optical sensing

Milczewski, Maura Scandelari; Silva, J C C da; Abe, Ilda; Carvalho, Lídia; Nogueira, Rogério N.; Paterno, Aleksander S.; Kalinowski, Hypolito José; Pinto, João

doi:10.1088/0957-0233/17/5/s36

Cited by 27 publications

(11 citation statements)

References 14 publications

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“…Common clinical problems caused by the imperfect interfacial bonding are marginal staining, bacterial micro leakage, and recurrent cavities. Optical fiber sensors have been used to monitor the setting chemical reaction of different dental materials, like dental cements, dental composite resins, dental gypsum, and fiber-reinforced composites [133][134][135][136][137]. In particular, the amount of shrinkage and the rise in temperature was studied during the setting chemical reaction of dental gypsum for different water/powder (w/p) ratios ( Figure 10) [133].…”

Section: Dental Materialsmentioning

confidence: 99%

New Trends in Dental Biomechanics with Photonics Technologies

et al. 2015

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Section: Dental Materialsmentioning

confidence: 99%

New Trends in Dental Biomechanics with Photonics Technologies

et al. 2015

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“…FBGs can be used to measure the hardening of dental cement and the corresponding stress build-up and the volumetric shrinkage of the resin cement during polymerization [67–69]. Milczewski et al [70] have used FBGs to determine the polymerization contraction and setting expansion of three types of gypsum products (plaster, dental stone, and high strength dental stone) and to monitor the strain evolution and temperature during the drying phase of the material. Two FBG sensors were used; one sensitive to the strain and temperature variations during setting, and the other placed in a double needle to monitor only the temperature variations during the reaction.…”

Section: Applicationsmentioning

confidence: 99%

The Use of Fiber Bragg Grating Sensors in Biomechanics and Rehabilitation Applications: The State-of-the-Art and Ongoing Research Topics

Al-Fakih

Osman

Adikan

2012

Sensors

141

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In recent years, fiber Bragg gratings (FBGs) are becoming increasingly attractive for sensing applications in biomechanics and rehabilitation engineering due to their advantageous properties like small size, light weight, biocompatibility, chemical inertness, multiplexing capability and immunity to electromagnetic interference (EMI). They also offer a high-performance alternative to conventional technologies, either for measuring a variety of physical parameters or for performing high-sensitivity biochemical analysis. FBG-based sensors demonstrated their feasibility for specific sensing applications in aeronautic, automotive, civil engineering structure monitoring and undersea oil exploration; however, their use in the field of biomechanics and rehabilitation applications is very recent and its practicality for full-scale implementation has not yet been fully established. They could be used for detecting strain in bones, pressure mapping in orthopaedic joints, stresses in intervertebral discs, chest wall deformation, pressure distribution in Human Machine Interfaces (HMIs), forces induced by tendons and ligaments, angles between body segments during gait, and many others in dental biomechanics. This article aims to provide a comprehensive overview of all the possible applications of FBG sensing technology in biomechanics and rehabilitation and the status of ongoing researches up-to-date all over the world, demonstrating the FBG advances over other existing technologies.

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“…Among the different type of fibre-optic sensors, fibre Bragg gratings (FBGs) [3], are widely used and considered as the most popular technology for implementing in monitoring systems and the preferred choice for many composite materials. Only a few medical studies using FBG sensors have been reported [4][5][6] for dental material characterization. Initial work reported in measurement of shrinkage strain and water absorption in dental composites shows promising results.…”

Section: Introductionmentioning

confidence: 99%

Fibre Bragg Grating Based Characterization System for Dental Resin Composites

Rajan

Shouha

Ellakwa

et al. 2016

Photonics and Fiber Technology 2016 (ACOFT, BGPP, NP)

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The characterization of the physical properties of dental resin composites is fraught with difficulties relating to significant intra and inter test parameter variabilities and is relatively time consuming and expensive. The main aim of this study was to evaluate whether optical fibre Brag grating (FBG) sensing system may become a viable tool to study dental material characteristics. Of particular focus was the potential for the system to demonstrate a multi parameter all-in-one feature. A miniature FBG was embedded in six different dental resin composites and employed as a sensor to evaluate linear polymerization shrinkage, thermal expansion and water sorption. This study demonstrates how optical fibre technology can provide simple and reliable methods of measuring the critical physical properties of dental composites. In addition due to the embedding and preservation of the sensor within the samples multiple parameters can be tested for with the same sample. Abstract: The characterization of the physical properties of dental resin composites is fraught with difficulties relating to significant intra and inter test parameter variabilities and is relatively time consuming and expensive. The main aim of this study was to evaluate whether optical fibre Brag grating (FBG) sensing system may become a viable tool to study dental material characteristics. Of particular focus was the potential for the system to demonstrate a multi parameter all-in-one feature. A miniature FBG was embedded in six different dental resin composites and employed as a sensor to evaluate linear polymerization shrinkage, thermal expansion and water sorption. This study demonstrates how optical fibre technology can provide simple and reliable methods of measuring the critical physical properties of dental composites. In addition due to the embedding and preservation of the sensor within the samples multiple parameters can be tested for with the same sample.OCIS codes: (060.2370) Fibre optic sensors; (060.3735) Fiber Bragg gratings IntroductionDental composites have become the material most often employed in the restoration of teeth [1], due to many factors including greater aesthetic demands, toxicity concerns and trends toward the conservative management of dentitions. Some of the characteristic properties of dental composites that are of interest to clinicians include polymerization shrinkage stress and strain, degree and depth of curing, fracture strength and toughness, elastic modulus, surface hardness and wear, thermal expansion coefficient and water sorption characteristics. A more reliable and all-in-one characterization tool will less parameter variability would be highly beneficial for dental materials research. Fibreoptic sensing technology is a powerful and potentially rich technology that is currently implemented in a wide variety of applications, where the optical fibre itself is acting as the sensor head [2]. Due to their miniature size (250 µm diameter) it is possible to embed the fibre optic sensor into the dental compo...

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Determination of setting expansion of dental materials using fibre optical sensing

Cited by 27 publications

References 14 publications

New Trends in Dental Biomechanics with Photonics Technologies

New Trends in Dental Biomechanics with Photonics Technologies

The Use of Fiber Bragg Grating Sensors in Biomechanics and Rehabilitation Applications: The State-of-the-Art and Ongoing Research Topics

Fibre Bragg Grating Based Characterization System for Dental Resin Composites

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