A FEM-based study on the influence of skewness and kurtosis surface texture parameters in human dental occlusal contact

Bastos, Flávia de Souza; Oliveira, E.A.; Goliatt, Leonardo; Vargas, Sabrina M.; Casas, Estevam Barbosa de Las

doi:10.1016/j.cam.2015.01.018

Cited by 5 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Selected profilometric parameters were calculated: Ra (average roughness), the arithmetic mean of the height of peaks and depth of the valleys from a mean line. This parameter describes the overall surface roughness [ 18 ]; Rku (kurtosis), it characterizes the flatness of the surface distribution [ 19 ]; Rsk (skewness), it characterizes the asymmetry of the surface distribution.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Suspension Containing Nanodiamonds on the Morphology of the Tooth Tissue Surface in Atomic Force Microscope Observations

Gronwald

Mitura

Voleský

et al. 2018

BioMed Research International

View full text Add to dashboard Cite

Reduced friction and wear of materials after the use of the carbon nanomaterials including nanodiamonds (NDs) have been confirmed by several studies in material engineering. Mechanical cleaning of the tooth surface by brush bristles should leave as little tissue roughened as possible. Higher surface roughness increases the tissue's wear and encourages the redeposition of the bacteria and the colouring agents present in the diet. Therefore, we evaluated the tooth tissues' surface's morphological changes after brushing them with the NDs suspension. Ten human teeth were brushed with the NDs aqueous suspension. The surfaces were observed using an Atomic Force Microscope (AFM). We found that the nature of the tissue surface became milder and smoother. A number of selected profilometric parameters were compared before and after brushing. We observed that brushing with the suspension of NDs resulted in a significant reduction in the enamel and dentine's surface roughness both in the range of the average parameters (Ra; p-0,0019) and in the detailed parameters (Rsk; p-0,048 and Rku; p-0,036). We concluded that the NDs used in the oral hygiene applications have a potentially protective effect on the enamel and the dentine's surfaces.

show abstract

Section: Resultsmentioning

confidence: 99%

The Influence of Suspension Containing Nanodiamonds on the Morphology of the Tooth Tissue Surface in Atomic Force Microscope Observations

Gronwald

Mitura

Voleský

et al. 2018

BioMed Research International

View full text Add to dashboard Cite

show abstract

“…Several researchers [62][63][64] found that the lower the skewness, the lower the contact area and, consequently, the lower the coefficient of friction. Ţȃlu et al [65] state that negative R sk shows the positive load-resistance ability of the surface of dental composites, which would have a relatively stable wear rate during function.…”

Section: Scratch Testmentioning

confidence: 99%

Thermocycling effect on mechanical and tribological characterization of two indirect dental restorative materials

Carreira

Antunes

Ramalho

et al. 2016

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The purpose of this study is to evaluate the effects of aging by thermocycling on the mechanical and tribological properties of two indirect filling commercial resin-based restorative composite materials. The studied composites are referenced by the capital letters: A and B. The commercial trade names are omitted, to avoid commercial references. Forty specimens of each material were produced and divided into three groups: a control group not subjected to aging, and two groups, T 1 and T 2 submitted to different thermocycling conditions. The studied properties were surface roughness, elastic modulus (determined dynamically by impulse excitation of vibration, and statically by four-point bending test), flexural strength and work of fracture (four-point bending test), micro-hardness (Vickers micro-indentation) and coefficient of friction (scratch test). From this study, it was possible to conclude that Composite A, in addition to having better mechanical properties, is less affected by thermocycling than Composite B, which suggests that it will better withstand the stresses, both mechanical and thermal, which it is subjected to. It is also possible to infer that the thermocycling regimen proposed by Standard ISO 11405 (Dental materialstesting of adhesion to tooth structure, 2003) is not sufficient to adequately simulate the degradation caused by the oral Technical Editor: Estevam Las Casas.

show abstract

“…On the other hand, many techniques and software solutions have been proposed for the calculation of TIs. There are several software tools frequently used in the medical field such as MaZda [7,8,9], Matlab-based CGITA [10], the "GLCM_textureToo" Java tool [11], the ImageJ "Texture Analyzer" plugin [12, 13,14], several modules of the Matlab "Image Processing Toolbox" [15], TexRad [16], InterView Fusion [17], ABAQUS [18,19] and FRAGSTATS [20], some of which are free.…”

Section: Introductionmentioning

confidence: 99%

Comparing the Reliability of Biomedical Texture Analysis Tools on Different Image Types

Béresová¹,

Forgács²,

Bujdosó³

et al. 2018

ACTA POLYTECH HUNG

View full text Add to dashboard Cite

The aim of this study was to analyze the reliability of texture index (TI) calculations using two different approaches. First, we calculated texture parameters on synthetically constructed images using four different biomedical software tools (CGITA, InterView Fusion, Matlab, MaZda). Second, we investigated the reliability of texture parameters, particularly how the texture indices diverge between two similar images with substantially different texture. We generated five different heterogeneous synthetic images, thereafter, histogram-based and co-occurrence matrix features were calculated. The co-occurrence based indices were computed after two (8 and 64) different gray scale normalizations. For the reliability test, we compared 22 texture indices using a histological slice of the brain and Michelangelo's painting, and the gray level dependence was also analyzed. The histogram-based parameters of all images and from all software were very similar. Differences were found in the co-occurrence based indices after both gray level image normalizations. The reliability tests showed that from 22 parameters only 5 texture indices changed more than 20%, and at least 64 normalization levels were necessary for acceptable results. Our results underline that in medical multicenter studies it is especially critical to use the same software package. Some parameters do not reliably reflect changes, so texture analysis (TA) should be used with caution.

show abstract

A FEM-based study on the influence of skewness and kurtosis surface texture parameters in human dental occlusal contact

Cited by 5 publications

References 20 publications

The Influence of Suspension Containing Nanodiamonds on the Morphology of the Tooth Tissue Surface in Atomic Force Microscope Observations

The Influence of Suspension Containing Nanodiamonds on the Morphology of the Tooth Tissue Surface in Atomic Force Microscope Observations

Thermocycling effect on mechanical and tribological characterization of two indirect dental restorative materials

Comparing the Reliability of Biomedical Texture Analysis Tools on Different Image Types

Contact Info

Product

Resources

About