The impact of in vitro aging on the mechanical and optical properties of indirect veneering composite resins

Stawarczyk, Bogna; Egli, R.; Roos, Małgorzata; Özcan, Mutlu; Hämmerle, Christoph H. F.

doi:10.1016/s0022-3913(11)60153-4

Cited by 47 publications

(52 citation statements)

References 31 publications

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“…Similar observations were made in another in-vitro study for manually polymerized resins after 180 days, and the discoloration increased in ascending order with the black tea, coffee and red wine 37) . In other previous studies red wine was reported to produce the most severe discoloration in temporary resins, followed by coffee and tea 38,39) .…”

Section: Discussionsupporting

confidence: 86%

Discoloration of manually fabricated resins and industrially fabricated CAD/CAM blocks <I>versus</I> glass-ceramic: Effect of storage media, duration, and subsequent polishing

et al. 2012

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This study determined the discoloration of five CAD/CAM resins, four manually polymerized resins, and glass-ceramic as control group. Specimens were divided into three groups (N=300, n=30) to be stored in coffee, black tea and red wine (n=10). The discoloration was measured using a spectrophotometer after 1, 7, 29, 90, 180 days storage. All tested groups showed color change (ΔE) at all time points. The manually polymerized resin composites GD (Gradia) and CM (CronMix K), and the CAD/CAM resin composite HC (Blanc High-class) showed significantly higher ΔE compared to all other groups in all tested media. The discoloration was extrinsic and decreased after polishing for the majority of the tested materials. Except CAD/CAM resin HC (Blanc High-class), all CAD/CAM resins showed similar color stability compared to the control group.

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Section: Discussionsupporting

confidence: 86%

Discoloration of manually fabricated resins and industrially fabricated CAD/CAM blocks <I>versus</I> glass-ceramic: Effect of storage media, duration, and subsequent polishing

et al. 2012

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“…36,37 Therefore, 4 aging levels in this first month (1, 7, 14, and 28 days) showed assessing distinct hardness changes. Two more measurements after 90 and 180 days were made when more stable values were again expected.…”

Section: Discussionmentioning

confidence: 81%

“…When choosing 10 observations, we relied to some extent on the experience of a previous study also based on 10 observations. 37 However, a posthoc power analysis to justify the chosen sample size at least partly was conducted. Given the observed pooled standard deviation of solubility (0.4 mg), the 2-sided 2-sample ttest has a power of 98% to detect a difference of 0.75 mg (50% of the pooled effect in CG).…”

Section: Discussionmentioning

confidence: 99%

Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media

Liebermann

Wimmer

Schmidlin

et al. 2016

The Journal of Prosthetic Dentistry

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STATEMENT OF PROBLEM: Polyetheretherketone (PEEK) can be used to support fixed dental prostheses. However, information about physicomechanical characterization is still scarce. PUR-POSE: The purpose of this in vitro study was to assess effects of different aging regimens/durations on roughness, solubility, water absorption, Martens hardness (HM), and indentation modulus/EIT on different computer-aided design and computer-aided manufacturing (CAD/CAM) polymers. MATERIAL AND METHODS: Forty standardized specimens of the following materials were fabricated: PEEK: Dentokeep (DK); hybrid material: VITA Enamic (EN); composite resins: LAVA Ultimate (LU) and an experimental CAD/CAM nanohybrid-composite resin (EX); poly(methyl methacrylate) (PMMA)-based: VITA CAD-Temp (CT); Telio CAD (TC), artBloc Temp (AT), and ZENOTEC ProFix (ZP). A nanofilledpolymer for interim restorations, Protemp 4 (CG), served as the control group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and EIT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the post hoc Scheffé tests (=.05). RESULTS: Storage media had no effect on surface roughness and water absorption. Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were observed for the hybrid material EN, followed by LU and EX. CONCLUSIONS: The hardness parameters of PEEK were comparable with those of PMMA-based materials. group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and E IT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the posthoc Scheffé tests (α=05).Results. Storage media had no effect on surface roughness and water absorption.Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest ! ! ! 2! solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were ...

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“…The improved physical and mechanical properties of RBC, the good esthetics, and the ease of chair side application in addition to acceptable durability of these restorations have led to its high popularity in recent decades. Durability of dental composite restorations is influenced by multiple factors, some are related to materials composition such as resin matrix, filler type and filler loading and others are related to the technique and surrounding environment in which the material is functioning, and recurrent decay could be an additional contributing factor to composite failure [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Storage Condition on Flexure Properties of Nano-Composite

Abuelenain¹

2017

Journal of Dentistry and Oral Care Medicine

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The impact of in vitro aging on the mechanical and optical properties of indirect veneering composite resins

Cited by 47 publications

References 31 publications

Discoloration of manually fabricated resins and industrially fabricated CAD/CAM blocks <I>versus</I> glass-ceramic: Effect of storage media, duration, and subsequent polishing

Discoloration of manually fabricated resins and industrially fabricated CAD/CAM blocks <I>versus</I> glass-ceramic: Effect of storage media, duration, and subsequent polishing

Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media

Influence of Storage Condition on Flexure Properties of Nano-Composite

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