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New Trends in Dental Biomechanics with Photonics Technologies

INESC-Porto and Faculty of Sciences of the University of Porto (FCUP), Rua do Campo Alegre, 687, Porto 4150-179, Portugal
CIDESD-ISMAI, Institute University of Maia, Avenida Carlos Olviveira, Castelo da Maia, Porto 4475-690, Portugal
Centre for Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Takayoshi Kobayashi
Appl. Sci. 2015, 5(4), 1350-1378;
Received: 31 July 2015 / Revised: 24 September 2015 / Accepted: 25 September 2015 / Published: 24 November 2015
(This article belongs to the Special Issue Feature Papers)
PDF [2260 KB, uploaded 12 December 2015]


Engineering techniques used to evaluate strain-stress fields, materials’ mechanical properties, and load transfer mechanisms, among others, are useful tools in the study of biomechanical applications. These engineering tools, as experimental and numerical ones, were imported to biomechanics, in particular in dental biomechanics, a few decades ago. Several experimental techniques have been used in dental biomechanics, like photoelasticity, ESPI (Electronic Speckle Pattern Interferometry), strain gages, and other kinds of transducers. However, these techniques have some limitations. For instance, photoelasticity and ESPI give the overall field pattern of the strain, showing the stress-strain concentration points. These methods cannot give an accurate measurement at all points. On the contrary, strain gages can be used to perform local measurements. However, as they use electrical resistances, their use is limited to perform in vivo measurements. Optical fiber sensors have already been used in dentistry, for diagnostic and therapeutic purposes, and in dental biomechanics studies. Lasers have also been used in clinical dentistry for a few decades. Other optical technologies, like optical coherence tomography (OCT), became suitable for dental practice and nowadays it is perhaps one that has had more development in dentristry, along with lasers. View Full-Text
Keywords: photonics technologies; photoelasticity; ESPI; OCT; lasers; fiber optic sensors; dental biomechanics photonics technologies; photoelasticity; ESPI; OCT; lasers; fiber optic sensors; dental biomechanics

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Carvalho, L.; Roriz, P.; Simões, J.; Frazão, O. New Trends in Dental Biomechanics with Photonics Technologies. Appl. Sci. 2015, 5, 1350-1378.

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