Digital image correlation in dental materials and related research: A review

Yoon, Sung-Sik; Jung, Hyung‐Jo; Knowles, Jonathan C.; Lee, Hae‐Hyoung

doi:10.1016/j.dental.2021.02.024

Cited by 18 publications

(10 citation statements)

References 117 publications

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“…The thermal cycling procedure depended not only on hydrolysis but also on thermal degradation (Morresi et al, 2014;Blumer et al, 2015;Szczesio-Wlodarczyk et al, 2020). In the experimental design, the physical and chemical properties of two removal thickness should be the same after light curing because of horizontal layering equally (Yoon et al, 2021). With regard to thermal degradation, the resin matrix and filler had different thermal expansion coefficients and thus, in thermal cycling, the bond between them could be damaged weakening the mechanical properties of the composite resins from strongly degraded external to inner less degraded layers.…”

Section: Discussioinmentioning

confidence: 99%

Removal of Different Thicknesses Influences the Repair Bond Strength of Dental Resin Composites

Wan

Shi

et al. 2021

Front. Mater.

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This study investigates the repair bond strength of aged resin composites after removing different thicknesses, determine the repair performance using the same or different resin composites and describe the treated surfaces after ageing. Seventy simulated class I cavities were prepared in extracted human third molars were randomly divided into two groups and restored with a nanofilled (Filtek Z350) or a microhybrid (Clearfil APX) composite. Five specimens without ageing in each group acted as a positive control for microtensile bond strength (MTBS) test. After thermocycling, each group was randomly divided into two subgroups: Group RT1, 1 mm removed and Group RT3, 3 mm removed, followed by roughening. Ten specimens in each subgroup were repaired with the same or different composites, and MTBS tests were conducted. The surface roughness (Sa), and water contact angle of the remaining five specimens in each subgroup were measured. In every combination group, Group RT3 showed significantly higher MTBS values than Group RT1, and identical composite was not compulsory for higher repair bond strength. Removal thickness had no significant effect on the Sa in same composite group. In both the Z350 and APX groups, the water contact angle decreased with increasing removal thickness.

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Section: Discussioinmentioning

confidence: 99%

Removal of Different Thicknesses Influences the Repair Bond Strength of Dental Resin Composites

Wan

Shi

et al. 2021

Front. Mater.

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“…Pointwise measurements, such as those provided by strain gauges [ 6 ], are sometimes not sufficient to fully monitor an experiment. Bioengineering tools [ 7 ] such as finite elements analysis (FEA) [ 8 , 9 , 10 , 11 , 12 , 13 ], moiré interferometry (MI) [ 14 , 15 , 16 , 17 ], electronic speckle pattern interferometry (ESPI) [ 18 , 19 , 20 , 21 ], and DIC [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] have been widely used in studying the mechanics of tooth or dental material.…”

Section: Introductionmentioning

confidence: 99%

“…DVC can retrieve internal displacements and strains. DIC has proven to be a potential tool that can replace the existing complex sensor devices in dental tests [ 26 ]. Wang et al [ 27 ] used 2D DIC to measure the strain distribution of a beam specimen extracted from a sound human third molar.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary In Vitro Study of 3D Full-Field Strain Distribution in Human Whole Premolars Using Digital Image Correlation

et al. 2022

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Full-field measurements can provide a more complete description of the behavior of human whole tooth under load. To that end, in vitro experiments were carried out to measure the full-field buccal surface strains of human premolars free of caries and abrasion using digital image correlation (DIC). Experimental results show that both the value field and the orientation field of strains can be observed exactly, both of which contain a wealth of information. Furthermore, the strain distributions between the crown and the root of specimens were significantly different (p < 0.001). An interesting observation was a watershed at the cementoenamel junction (CEJ) which separates the orientation field of strains into two distinct parts; the watershed was also observed in the value field of strains in some specimens whose geometries changed obviously at the CEJ. Another interesting observation was that the minor strains increased linearly from cervical to apical regions in the root cementum. Experimental results also support the viewpoint that mechanisms of non-carious cervical lesions (NCCLs) may in part be due to the changing orientation of tensile strains, as well as their magnitude, and they also support the hypothesis that occlusal force can contribute to root fractures.

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“…Clinical implementation of new technologies calls for modifications and optimizations of clinical and technical protocols [ 10 , 11 ]. Within technical protocols are also those dealing with the production of dental prosthodontic appliances regarding input material quality and characteristics, input material handling protocols, production specifics, and output quality control with final standardized products regarding mechanical and biochemical properties, biopotentials, cytological dynamics, and forensic aspects [ 12 , 13 ]. However, those technical production protocols are still undefined and are by no means standardized, resulting in a vast array of products with undefined characteristics.…”

Section: Introductionmentioning

confidence: 99%

Additively Manufactured Commercial Co-Cr Dental Alloys: Comparison of Microstructure and Mechanical Properties

et al. 2021

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Laser-powder bed fusion (LPBF) is one of the preferred techniques for producing Co-Cr metal structures for dental prosthodontic appliances. However, there is generally insufficient information about material properties related to the production process and parameters. This study was conducted on samples produced from three different commercially available Co-Cr dental alloys produced on three different LPBF machines. Identically prepared samples were used for tensile, three-point bending, and toughness tests. Light microscopy (LM), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD) analyses of microstructure were performed after testing. Differences were observed in microstructures, which reflected statistically significant differences in mechanical properties (one-way analysis of variance (ANOVA) and Scheffé post hoc test (α = 0.05)). The material produced on the 3D Systems DMP Dental 100 had 24 times greater elongation ε than the material produced on the Sysma MySint 100 device and the EOS M100 machine. On the other hand, the material produced on the EOS M100 had significantly higher hardness (HV0.2) than the other two produced materials. However, the microstructure of the Sysma specimens with its morphology deviates considerably from the studied group. LPBF-prepared Co-Cr dental alloys demonstrated significant differences in their microstructures and, consequently, mechanical properties.

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Digital image correlation in dental materials and related research: A review

Cited by 18 publications

References 117 publications

Removal of Different Thicknesses Influences the Repair Bond Strength of Dental Resin Composites

Removal of Different Thicknesses Influences the Repair Bond Strength of Dental Resin Composites

A Preliminary In Vitro Study of 3D Full-Field Strain Distribution in Human Whole Premolars Using Digital Image Correlation

Additively Manufactured Commercial Co-Cr Dental Alloys: Comparison of Microstructure and Mechanical Properties

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