Holographic detection of a tooth structure deformation after dental filling polymerization

Pantelić, Dejan; Blažić, Larisa; Savić-Šević, Svetlana; Panić, B.

doi:10.1117/1.2714056

Cited by 12 publications

(3 citation statements)

References 38 publications

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“…The DHI is a laser optic technique suitable for the submicron measurement of surface deformations in a contactless and non-destructive manner [24]. The basic principle of holographic interferometry considers recording sample images (holograms) at two states, before and after mechanical load, and interference of the resulting holograms visualizing the displacement field of the object [25][26][27]. By using a digital camera connected to a computer interface in DHI, fast and simple recording and reconstruction of the holographic images in real-time is possible [24].…”

Section: Photo-mechanicsmentioning

confidence: 99%

Novel biophotonics-based techniques in dental medicine - a literature review

et al. 2020

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Introduction. Biophotonics deals with interactions between light and biological matter, integrating knowledge of physics, chemistry, engineering, biology, and medicine for solving specific biomedical or life science problems. Due to the ability to provide non-invasive, highly sensitive tissue information and inducing specific localized tissue ablation, biophotonics-based technologies may be of utmost importance in improving dental healthcare. The aim of this review article is to give an overview of contemporary biophotonics-based technologies and their applications in dental research and clinical practice. Various applications of biophotonics-based technologies. Biomedical imaging techniques (nonlinear microscopy methods and optical coherence tomography), photo-mechanical methods (digital holographic interferometry, photo-elasticity, digital image correlation, Moir? interferometry), optical spectroscopy techniques (Raman and Fourier transform infrared spectroscopy, Brillouin light scattering spectroscopy), fiber Bragg grating sensors, photodynamic therapy, photo-biostimulation, and femtosecond laser applications are presented in this paper. Conclusion. In accordance with the modern tendencies of prevention and timely diagnosis of oral diseases, biophotonics may be considered the leading scientific discipline on the path of progress of dental medicine and technology. Therefore, this paper provides an overview of modern methods based on biophotonics and summarizes their applicability focusing on the field of dental medicine.

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Section: Photo-mechanicsmentioning

confidence: 99%

Novel biophotonics-based techniques in dental medicine - a literature review

et al. 2020

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“…Digital holographic interferometry (DHI) is a laser optic technique suitable for nondestructive and contactless measurements of submicron changes in highly asymmetrical objects with micrometer precision 16,17 . The efficiency of classical holographic interferometry in the field of dental biomechanics was previously studied 18,19 , while DHI is a relatively new testing method in the field. Due to the digital nature of the method (digital camera, computer software) enabling fast and simple recording and reconstruction of holographically generated interference images, DHI has become a valuable tool in different fields of science and technology 20 .…”

Section: Introductionmentioning

confidence: 99%

The cuspal deflection caused by dental composite polymerization shrinkage analyzed by digital holography

et al. 2022

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Background/Aim. The objective of this study was to measure tooth cusps deflection caused by polymerization shrinkage of a resin-based dental material (RDM), in real-time using digital holographic interferometry (DHI), in two groups of cavities restored with and without an additional wall. Simultaneously, internal tooth mechanical behavior was monitored. Methods. Standardized three class I cavities were prepared on third molar teeth. The teeth were cut in two halves in the longitudinal plane, obtaining six samples for the study (now with class II cavities), divided into two groups (group G1 - with the additional wall, group G2 - without it) and mounted in aluminum blocks. The cavities were filled with the RDM, cured with a light emitting diode (LED) for 40 s from the occlusal direction, and monitored during the curing and post-curing period using DHI. Data were analyzed using student's t-test for independent samples and Anderson-Darling test, with an alpha level of 0.05. Results. At the end of the examined period, the samples from group G1 showed significantly increased tooth cusps deflection (t (10) = 4.7; p = 0.001) compared to samples from group G2. Conclusion. Within the limitations of this study, it was concluded that the presence of the additional wall simulating a dental matrix-band, influenced increased and prolonged tooth cusps deflection during the examined RDM polymerization shrinkage.

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“…Additionally, these experiments provided mechanical parameters that were averaged over the entire specimen. Photomechanical techniques such as digital photoelasticity, digital moir e interferometry, electronic speckle pattern interferometry and digital image correlation are applied in dental biomechanics to study stress-strain response in intact (Wang & Weiner 1998, Kishen & Asundi 2005a,b, Panteli c et al 2014) and restored root filled teeth (Lang et al 2004, Panteli c et al 2007) in a nondestructive manner under physiologically relevant loads.…”

Section: Introductionmentioning

confidence: 99%