In-vitro-Untersuchungen zur Eignung lichthärtender Kunststoffe für interokklusale Aufbissschiene

Danesh, Gholamreza; Lippold, Carsten; Ziebura, Thomas; Reinhardt, Klaus-Jürgen; Schäfer, Edgar; Ehmer, U

doi:10.1007/s00056-006-5032-5

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…This is especially crucial for the light curing resins discussed above. Danesh et al described that with material layer depths of primosplint ® more than 9 mm not every tested specimen (cylinders with a diameter of 6 mm) was cured [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

Bonding Interface and Repairability of 3D-Printed Intraoral Splints: Shear Bond Strength to Current Polymers, with and without Ageing

et al. 2021

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This in-vitro study investigates the bonding interfaces reached by the conditioning of a splint material additively manufactured by digital light processing (AM base) as well as the shear bond strength (SBS) of resins bonded to these surfaces (repair material). Therefore, the AM base was either stored in dry for 12 h or wet environment for 14 days to simulate ageing by intraoral wear. The dry and wet group was bonded after physical and/or chemical conditioning to cylinders made from polymethylmethacrylate or four novel polymers allowing splint modifications. Blasted and methylmethacrylate (MMA)-conditioned Polymethylmethacrylate (PMMA) bonded to PMMA acted as the gold standard. The surface profiles revealed highest differences of Ra towards the gold standard in AM base conditioned with other than MMA after sandblasting. The adhesively bonded repair materials of the wet AM base were further aged in wet environment for 14 days. The SBS of the gold standard (25.2 MPa and 25.6 MPa) was only reached by PMMA bonded to blasted and MMA-conditioned AM base after dry (22.7 MPa) and non-conditioned after wet storage (23 MPa). Four repair materials failed to reach the threshold of 5 MPa after dry storage and three after wet storage, respectively. Non-conditioned AM base revealed the highest risk for adhesive fractures when using other resins than PMMA.

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Section: Discussionmentioning

confidence: 99%

Bonding Interface and Repairability of 3D-Printed Intraoral Splints: Shear Bond Strength to Current Polymers, with and without Ageing

et al. 2021

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“…It can be assumed that the material hardness has an effect on roughness. Light-curing occlusal splint resins are expected to have comparable hardness as auto-polymerizing systems [63,64], but hardness of 3D-printed occlusal splint materials is influenced by the print angle [17]. Martens hardness and indentation modulus depend on post-polymerization and are expected to decrease after water storage [39] [62].…”

Section: Roughnessmentioning

confidence: 99%

Effects of storage and toothbrush simulation on color, gloss, and roughness of CAD/CAM, hand-cast, thermoforming, and 3D-printed splint materials

et al. 2022

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Objectives The aim was to investigate color, gloss, or roughness of splint materials after storage in liquids and toothbrush simulation. Materials and methods A total of 58 × 8 (n = 10 per material and group) specimens were fabricated (hand-cast, thermoforming, CAD/CAM-milled, 3D-printed materials); stored in air, water, coffee, red wine, and cleaning tablets; and investigated after fabrication, 24 h, two-, and four-week storage or toothbrushing. Color values (L*, a*, b*; ISO 11664–4:2008; CM–3500d, Konica-Minolta), gloss (ISO 2813:2014), and roughness values were determined (3D laser-scanning-microscope, KJ 3D, Keyence) before and after simulation or storage. Statistics: Levene-test, one-way ANOVA, Bonferroni post hoc test, between-subjects effects, Pearson correlation (α = 0.05). Results Color, gloss, and roughness altered due to contact with staining solutions/toothbrush simulation. Highest impact on color, gloss, and roughness presented the material followed by storage time (ΔE material (η2 = 0.239/p < 0.001), storage time (η2 = 0.179/p < 0.001); gloss (η2 = 0.751/p < 0.001) (η2 = 0.401/p < 0.001); Ra/Rz (η2 ≥ 0.801/p < 0.001) (η2 ≥ 0.416/p < 0.001)). Correlations were found between Rz and Ra (Pearson 0.887/p ≤ 0.001) or Rz and ΔE (0.517/p ≤ 0.001) or Ra and ΔE (0.460/p ≤ 0.001). Conclusions Storage and toothbrushing were accompanied by a change in color, gloss, and roughness. Almost all materials showed visible discoloration after 4 weeks of storage. Gloss values decreased as storage time increased. The initial roughness and polishability were better with harder materials. Clinical relevance. Milled and 3D printed splints show good color, gloss, and roughness resistance after 4-week storage or toothbrush application.

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Minimal surface designs for porous materials: from microstructures to mechanical properties

Zheng

et al. 2018

J Mater Sci

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In-vitro-Untersuchungen zur Eignung lichthärtender Kunststoffe für interokklusale Aufbissschiene

Abstract: The results we have obtained so far concerning surface hardness indicate that, in the fabrication of occlusal splints, light-cured resins may represent an alternative to auto-polymerizing materials.

Cited by 8 publications

References 40 publications

Bonding Interface and Repairability of 3D-Printed Intraoral Splints: Shear Bond Strength to Current Polymers, with and without Ageing

Bonding Interface and Repairability of 3D-Printed Intraoral Splints: Shear Bond Strength to Current Polymers, with and without Ageing

Effects of storage and toothbrush simulation on color, gloss, and roughness of CAD/CAM, hand-cast, thermoforming, and 3D-printed splint materials

Minimal surface designs for porous materials: from microstructures to mechanical properties

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