Reliability of wear measurements of CAD-CAM restorative materials after artificial aging in a mastication simulator

Grau, Alexander; Stawarczyk, Bogna; Roos, Małgorzata; Theelke, Björn; Hampe, Rüdiger

doi:10.1016/j.jmbbm.2018.06.030

Cited by 12 publications

(8 citation statements)

References 14 publications

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“…Crown bridge resins must be strong enough to withstand the large chewing forces in the oral cavity, and it must exhibit abrasion resistance and color stability during longterm use [20,21]. Roughness values above 0.2 µm have been reported to be related to an increase in bacterial retention and plaque accumulation [22], which can lead to a risk of gingival and periodontal inflammation [23,24].…”

Section: Introductionmentioning

confidence: 99%

Effects of Artificial Tooth Brushing and Hydrothermal Aging on the Mechanical Properties and Color Stability of Dental 3D Printed and CAD/CAM Materials

et al. 2021

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This study analyzed the surface roughness and waviness, Vickers hardness (VHN), and color changes of six types of 3D printed resins and computer-aided design/computer-aided manufacturing (CAD/CAM) materials after artificial toothbrushing. The average surface roughness height (Ra) change of Formlabs denture teeth A2 resin (FMLB) was not significant between after artificial toothbrushing (0.17 ± 0.02 μm and 0.17 ± 0.05 μm, respectively; mean ± standard deviation). However, the Ra value increased significantly in all remaining groups. Regarding waviness, polymethylmethacrylate (PMMA) had the largest increases in average waviness height (Wa) and maximum surface waviness height (Wz) between, before (0.43 ± 0.23 μm and 0.08 ± 0.02 μm), and after (8.67 ± 4.03 μm, 1.30 ± 0.58 μm) toothbrushing. There were no significant changes in Wa for Formlabs denture teeth A2 resin (FMLB) and NextDent C&B (NXT). After artificial toothbrushing, the dispersed-filler composite (DFC) group had the largest color difference (ΔE, of 2.4 ± 0.9), and the remaining materials had smaller changes than the clinical acceptance threshold of ΔE = 2.25. The VHN of FMLB and NXT were 9.1 ± 0.4 and 15.5 ± 0.4, respectively, and were not affected by artificial toothbrushing. The flexural strengths of the 3D printed materials were 139.4 ± 40.5 MPa and 163.9 ± 14.0 MPa for FMLB and NXT, respectively, which were similar to those of the polycarbonate and PMMA groups (155.2 ± 23.6 MPa and 108.0 ± 8.1 MPa, respectively). This study found that the evaluated 3D printed materials had mechanical and optical properties comparable to those of CAD/CAM materials and were stable even after artificial toothbrushing and hydrothermal aging.

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Section: Introductionmentioning

confidence: 99%

Effects of Artificial Tooth Brushing and Hydrothermal Aging on the Mechanical Properties and Color Stability of Dental 3D Printed and CAD/CAM Materials

et al. 2021

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“…Polymeric materials are currently the predominant material used in the fabrication of temporary and permanent dental crowns; polymer-based printing accounts for most of the materials used throughout the additive manufacturing market [9,10]. Temporary and permanent dental crown bridge resins must have mechanical properties that can withstand the chewing forces in the oral cavity, resist discoloration caused by food [11,12], and maintain biocompatibility [10]. The color stabilities of 3D-printed dental crowns and bridge resins were reported to be significantly lower than that of conventional milling poly (methyl methacrylate) (PMMA) blocks [13].…”

Section: Introductionmentioning

confidence: 99%

Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials

2024

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This study aimed to determine the surface glazing effect on the mechanical and biological properties of threedimensional printed dental permanent resins. Methods: Specimens were prepared using Formlabs, Graphy Tera Harz permanent, and NextDent C&B temporary crown resins. Specimens were divided into three groups: samples with untreated surfaces, glazed surfaces, and sand-glazed surfaces. The flexural strength, Vickers hardness, color stability, and surface roughness of the samples were analyzed to identify their mechanical properties. Their cell viability and protein adsorption were analyzed to identify their biological properties. Results:The flexural strength and Vickers hardness of the samples with sand glazed and glazed surfaces were significantly increased. The color change was higher for surface untreated samples than that for the samples with sand-glazed and glazed surfaces. The surface roughness of the samples with sand-glazed and glazed surfaces was low. The samples with sand-glazed and glazed surfaces have low protein adsorption ability and high cell viability. Conclusions: Surface glazing increased the mechanical strength, color stability, and cell compatibility, while reducing the Ra and protein adsorption of 3D-printed dental resins. Thus, a glazed surface exhibited a positive effect on the mechanical and biological properties of 3D-printed resins.

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“…Wear is a consequence of occlusal interactions that are considered normal. If it is not controlled, however, wear can lead to reduced chewing ability, decreasing the quality of life and potentially deteriorating overall health [ 2 , 3 ]. Ideally, restorative materials should undergo wear in the same way as natural dentition [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of volumetric loss and surface roughness of composite dental restorations obtained by additive and subtractive manufacturing methods

Güntekin,

Tunçdemir

2024

Heliyon

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Reliability of wear measurements of CAD-CAM restorative materials after artificial aging in a mastication simulator

Cited by 12 publications

References 14 publications

Effects of Artificial Tooth Brushing and Hydrothermal Aging on the Mechanical Properties and Color Stability of Dental 3D Printed and CAD/CAM Materials

Effects of Artificial Tooth Brushing and Hydrothermal Aging on the Mechanical Properties and Color Stability of Dental 3D Printed and CAD/CAM Materials

Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials

Comparison of volumetric loss and surface roughness of composite dental restorations obtained by additive and subtractive manufacturing methods

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