Effect of acidic media on flexural strength and fatigue of CAD-CAM dental materials

Elraggal, Alaaeldin; Afifi, Rania; Alamoush, Rasha A.; Raheem, Islam Abdel; Watts, D.C.

doi:10.1016/j.dental.2022.11.019

Cited by 10 publications

(9 citation statements)

References 42 publications

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“…A previous study of resin composites reported that their flexural strength and modulus were not correlated with their fatigue performance 23 . Another previous study reported that resin composites may withstand fatigue loading without crack propagation better than ceramic materials because of their plastic nature 24 . Future studies should compare the fatigue performance of the 3D‐printed resins compared with ceramic materials.…”

Section: Discussionmentioning

confidence: 96%

“…23 Another previous study reported that resin composites may withstand fatigue loading without crack propagation better than ceramic materials because of their plastic nature. 24 Future studies should compare the fatigue performance of the 3D-printed resins compared with ceramic materials.…”

Section: Discussionmentioning

confidence: 99%

“…Most 3D-printed materials had lower flexural strength and hardness than the milled materials. 17 Conventional resin composites used in dentistry have been well characterized [18][19][20][21][22][23][24][25][26] ; however, very little information is available about the composition of commercially available tooth-colored 3D-printed resins used for high-stress dental applications, such as permanent crowns or provisional hybrid dentures. Furthermore, the relationship between the composition of these 3D-printed materials and mechanical properties is not well understood.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of materials used for 3D printing dental crowns and hybrid prostheses

Bora,

Sayed Ahmed,

Alford

et al. 2023

J Esthet Restor Dent

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ObjectivesTo compare the filler weight percentage (wt%), filler and resin composition, flexural strength, modulus, and hardness of several 3D‐printed resins to direct and indirect restorative materials.Materials and MethodsFour 3D‐printed resins (C&B MFH, Ceramic Crown, OnX, and OnX Tough), one milled resin composite (Lava Ultimate), one conventional composite (Filtek Supreme), and one ceramic (IPS e.max CAD) were evaluated. Filler wt% was determined by the burned ash technique, and filler particle morphology and composition were analyzed by scanning electron microscopy and energy‐dispersive spectroscopy, respectively. Organic resin composition was analyzed by Fourier transform infrared spectroscopy. Three‐point bend flexural strength and modulus of the materials were determined by ISO 4049 or ISO 6872. Vickers microhardness was measured. Data were compared with a one‐way analysis of variance (ANOVA) and Tukey post hoc analysis. Linear regression analysis was performed for filler wt% versus flexural strength, modulus, and hardness.Results3D‐printed resins were composed of various sized and shaped silica fillers and various types of methacrylate resins. Significant differences were found among filler wt% with some materials around 3% (C&B MFH), others between 33% and 38% (OnX Tough and OnX), others around 50% (Ceramic Crown), and some around 72% (Filtek Supreme and Lava Ultimate). All 3D‐printed resins had significantly lower flexural strength, modulus, and hardness than the conventional and milled resin composites and ceramic material (p < 0.001). Filler wt% demonstrated a linear relationship with modulus (p = 0.013, R2 = 0.821) and hardness (p = 0.018, R2 = 0.787) but not flexural strength (p = 0.056, R2 = 0.551).Conclusions3D‐printed resins contain from 3% to 50% filler content. Filler wt% alone does not affect flexural strength, but strength may be affected by resin composition as well. Although the 3D‐printed resins had lower flexural strength, modulus, and hardness than milled and conventional composite and ceramic, they demonstrated nonbrittle plastic behavior.Clinical SignificanceThe properties of 3D‐printed resins vary based on their composition, which affects their clinical applications.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of materials used for 3D printing dental crowns and hybrid prostheses

Bora,

Sayed Ahmed,

Alford

et al. 2023

J Esthet Restor Dent

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“…The following ingredients were dissolved in 1 L of deionized water to obtain artificial saliva: Xanthan gum (0.92), KCl (1.2), NaCl (0.85), MgCl 2 (0.05), NaH 2 PO 4 (0.13), C 8 H 8 O 3 (0.13), and CaCl 2 (0.13). 10,15 Then, the samples were removed from the artificial saliva, and dried and baseline Ra and color measurements were performed.…”

Section: Samples Preparationmentioning

confidence: 99%

“…The bottles were kept in an incubator (Model B 28, BINDER GmbH) at 37 °C for 24 hours. 10,19,20 After that all samples were ultrasonically cleaned for 10 minutes in distilled water and then air-dried. According to previous studies, this erosive procedure is comparable to 2.5 years of clinical exposure to acids where teeth are exposed to acids three times per day, 30 seconds/exposure.…”

Section: Erosive Mediamentioning

confidence: 99%

Effect of Acidic Media on Surface Topography and Color Stability of Two Different Glass Ceramics

Makkeyah,

Elsahn,

Bakr

et al. 2024

Eur J Dent

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Objective The aim of this study was to determine the effect of two acidic beverages (orange juice and H3PO4-containing fizzy drink) on the surface topography and color stability of two commonly used computer-aided design/computer-aided manufacturing (CAD/CAM) ceramic materials. Materials and Methods Sixty samples of two CAD/CAM ceramic materials, lithium disilicate (IPS e-max CAD) and zirconia reinforced lithium silicate (Vita Suprinity), were prepared according to the manufacturer's instructions. The samples were immersed in one of three media (artificial saliva, orange juice and H3PO4-containing fizzy drink) and then stored in an incubator at 37 °C for 24 hours). Before and after immersion in different media, the surface roughness (Ra) of the samples was assessed using profilometer (JITAI8101 Surface Roughness Tester—Beijing Jitai Tech Detection Device Co. Ltd, China) and the color parameters were measured using VITA Easyshade Advance 4.01 (VITA shade, VITA made, VITA). Surface topography was observed using scanning electron microscope (SEM) and surface mineral content was compared before and after immersion. Paired sample t-test was used to determine the change in Ra before and after immersion. Two-way analysis of variance was used to determine the effect of different CAD/CAM materials and immersion media on the mean ∆Ra and mean ∆E of the studied groups. Tukey's honest significant difference posthoc test was used for multiple comparisons at a level of significance (α = 0.05). Results A significant increase in Ra and a decrease in the color stability of the two investigated ceramic materials were detected after immersion in the acidic media than in artificial saliva. SEM and energy-dispersive X-ray results revealed the dissolution of the glassy matrix and the exposure of silicate crystals. Conclusion The surface topography and color stability of glass ceramics are affected by the pH of different acidic media.

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Advances in zirconia-based dental materials: Properties, classification, applications, and future prospects

Huang,

Chen,

Wang

et al. 2024

Journal of Dentistry

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Effect of acidic media on flexural strength and fatigue of CAD-CAM dental materials

Cited by 10 publications

References 42 publications

Characterization of materials used for 3D printing dental crowns and hybrid prostheses

Characterization of materials used for 3D printing dental crowns and hybrid prostheses

Effect of Acidic Media on Surface Topography and Color Stability of Two Different Glass Ceramics

Advances in zirconia-based dental materials: Properties, classification, applications, and future prospects

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