Roughness Measurement of Dental Materials

Shulev, Assen; Roussev, Ilia; Karpuzov, Simeon; Stoilov, Georgi; Ignatova, Detelina; See, Constantin von; Mitov, Gergo

doi:10.1515/jtam-2016-0008

Cited by 12 publications

(7 citation statements)

References 13 publications

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“…Specific studies are devoted to profilometer-based approach [28] and advanced micro computed tomography [29], owing to the fact that hard X-ray allow for the isotropic spatial resolution in three-dimensional space. These methods can improve possibilities of the assessment of implants and surrounding bones, to determine mineral concentration in the teeth and to estimate the thickness of enamel.…”

Section: Discussionmentioning

confidence: 99%

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

et al. 2020

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The aim of our study was to analyze the precision of fused-deposition modeling (FDM), polyjet technology (PJ), stereolithography (SLA) and selective laser sintering (SLS) and to evaluate some interesting indications of these methods in clinical practice. Forty upper dental arches were scanned using a 3Shape Trios 3R optical scanner system and 3D models were made. An Atos II 400 optical 3D scanner was used for calculating the coordinates of points by optical triangulation, photogrammetry and fringe projection. Each model was scanned from a minimum of 56 positions to evaluate global coordinates. Surface morphology was evaluated with an Alpha Step IQ profilometer and a JSM 5510 LV scanning electron microscope. From the measurements in cross-sections it was evident that the deviation shifted by approximately 0.1 mm. The smoothest and most homogeneous sample was SLA. SLS and SLA samples showed the most similar results in comparison of perpendicular directions (homogeneity). FDM and PJ materials exhibited significantly greater roughness in the printing direction than in the perpendicular one, which is most likely caused by the technology selected and/or print parameters. Clinical applications have demonstrated unusual treatment options for patients with rare diseases.

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Section: Discussionmentioning

confidence: 99%

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

et al. 2020

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“…Tekstura površine je jako važno pitanje u razumevanju prirode materijala i igra važnu ulogu u njegovim funkcionalnim performansama. Čvrste površine, bez obzira na način njihovog formiranja, sadrže nepravilnosti ili odstupanja od propisanih geometrijskih oblika [9][10][11] . Nijedan metod obrade, koliko god precizan, ne može da proizvede molekularno ravnu površinu materijala.…”

Section: Uvodunclassified

“…Surface texture is a very important issue in understanding the nature of a material and plays an important role in its functional performance. Solid surfaces, irrespective of their method of formation, contain irregularities or deviations from the predetermined geometric shapes [9][10][11] . No processing method, however precise, can produce a molecularly smooth surface of the material.…”

Section: Introductionmentioning

confidence: 99%

The potential factors affecting the perception of aesthetic smile among adult patients attending Dental clinics of Jazan University

Shaabi¹,

Al-Makramani²,

Al-Sanabani³

et al. 2020

Acta stomatologica Naissi

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SažetakUvod: Da bi se materijal smatrao biološki prihvatljivim neophodno je da poseduje takav površinski dizajn da što manje reaguje sa tkivom i agensima iz okoline.Nijedna metoda obrade ne može da proizvede molekularno ravnu površinu stomatoloških materijala. Cilj: istraživanja bio je ispitati hrapavost različitih stomatoloških materijala, pomoću mehaničkog profilometra. Materijal i metode: Ispitivani materijal obuhvatio je kompozit, toplo polimerizovani akrilat, hladno polimerizovane akrilate koji se koriste u protetici i ortodonciji, cirkonijum oksidnu keramiku i staklokermiku. Uzorci materijala za istraživanje su napravljeni prema uputstvu proizvođača. Merenje hrapavosti dobijenih uzoraka izvršeno je pomoću Mitutoyo prevlačenjem čitača preko uzoraka, u dva pravca (vertikalno i horizontalno), čime su dobijena dve vrednosti merenja za svaki materijal pojedinačno. Rezultati: Merenjem hrapavosti materijala, utvrđeno je da među ispitivanim uzorcima postoje značajne razlike. Najveća hrapavost izmerena je kod hladno polimerizovanog akrilata koji se koristi u protetici, dok je najmanja hrapavost izmerenakod kompozitnog materijala. Zaključak: Hrapavost je bila značajno veća kod hladno polimerizovanih akrilata u odnosu na ostale ispitivane materijale, te ga, kada je god to moguće, treba zameniti toplo polimerizvanim akrilatom.U cilju smanjenja hrapavosti stomatoloških materijala treba poštovati principe njihove pripreme i posebno površinske obrade (postupak poliranja i glaziranja). Abstract Introduction:In order for a material to be considered biologically acceptable, it is necessary to have such a surface design that it reacts as little as possible with tissue and environmental agents. No processing method can produce a molecularly flat surface of dental materials. The aim: of the study was to examine the roughness of various dental materials, using a mechanical profilometer. Material and methods: The test included different materials such as composite, hot polymerized acrylate, cold polymerized acrylates used in prosthetics and orthodontics, zirconium oxide ceramics and glass-ceramics. Samples of the research materials were made according to the manufacturer's instructions. The measurement of the roughness of the obtained samples was performed using a Mitutoyo SJ-301 Suftest device, dragging the reader across the samples, in two directions (vertical and horizontal), thus obtaining two measurement values for each material individually. Results: By measuring the roughness of the material, it was found that there were significant differences between the samples tested. The highest roughness was measured for cold polymerized acrylates used in prosthetics, while the lowest roughness was measured for composite materials. Conclusion: The roughness was significantly higher for cold polymerized acrylates than the other tested materials and should, wherever possible, be replaced by hot polymerized acrylates. In order to reduce the roughness of dental materials, the principles of their preparation and in particular the surfac...

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“…Surface configuration for the normal and laser-treated retina to study the accumulation effects on the retina was investigated through laser photography [44]. The surface roughness variations of zirconia materials that were used for dental crowns were measured by specklebased autocorrelation analysis [45]. Deana et al [46] reported on the application of biospeckle imaging for the early assessment of carious lesions on teeth.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale quantitative surface roughness measurement of articular cartilage using second-order statistical-based biospeckle

2021

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Quantitative measurement of nanoscale surface roughness of articular cartilage tissue is significant to assess the surface topography for early treatment of osteoarthritis, the most common joint disease worldwide. Since it was not established by clinical diagnostic tools, the current studies have been suggesting the use of alternative diagnostic tools using pre-clinical methods. This study aims to measure the nanoscale surface roughness of articular cartilage tissue utilizing biospeckle which is used as a non-destructive and non-contact optical imaging technique. An experimental setup was implemented to capture biospeckle images from twelve cross-section areas of articular cartilage tissue gathered from bovine knee joints at 632 nm wavelength laser radiation. Then, to analyze the biospeckle image, a second-order statistical-based method was proposed through the combination of 308 highly correlated statistical features extracted from implemented gray-level co-occurrence matrices by employing principal component analysis. The result indicated that the measurement of the nanoscale surface roughness based on the first principal component only is able to provide accurate and precise quantitative measurement of early signs of articular cartilage degeneration up to 2500 nm.

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Roughness Measurement of Dental Materials

Cited by 12 publications

References 13 publications

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

The potential factors affecting the perception of aesthetic smile among adult patients attending Dental clinics of Jazan University

Nanoscale quantitative surface roughness measurement of articular cartilage using second-order statistical-based biospeckle

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