Effect of Thermocycling on the Shear Bond Strength of Different Resins Bonded to Thermoplastic Foil Applied in Occlusal Splint Therapy

Więckiewicz, Mieszko; Boening, Klaus; Richter, Gert; Więckiewicz, Włodzimierz

doi:10.1111/jopr.12190

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Similarly, studies on thermoplastic foils, in particular those with a build-up made of an LC resin, are scarce. 14 A study by Patzelt et al revealed that a digital workflow was more time-efficient, and the fit of the digitally-fabricated splints was better than that of the conventionally-fabricated ones. The wear of the 2 different materials showed comparable results.…”

Section: Discussionmentioning

confidence: 99%

“…The technology is used to produce prosthetic restorations, dental models, implants, surgical guides, custom trays, orthodontic appliances, and occlusal splints. [13][14][15][16][17] Furthermore, it provides a simple means of manufacturing complex, customdesigned objects, reducing material waste and working time. 18,19 Despite its many advantages, there are several limitations to 3D printing that require comprehensive research into the materials and techniques used in the fabrication of oral appliances.…”

Section: Introductionmentioning

confidence: 99%

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How does artificial aging affect the mechanical properties of occlusal splint materials processed via various technologies?

Weżgowiec,

Małysa,

Więckiewicz

2024

Dent. Med. Probl.

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Background. The mechanical reliability of occlusal splints and their long-term behavior are significant factors determining the clinical outcome of temporomandibular disorder (TMD) therapy. However, improvements are still needed in this area.Objectives. This in vitro study aimed to (1) compare the hardness and flexural properties of materials manufactured using 3 techniques for occlusal splint fabrication (conventional heat curing, thermoforming followed by light curing, and three-dimensional (3D) printing) and ( 2) analyze the effect of artificial aging on the properties of the materials. Material and methods.A total of 120 disc-shaped specimens were manufactured for the Shore D hardness evaluation, and 120 bar-shaped specimens were fabricated for the flexural properties evaluation (n = 15 for each group). Each material was tested in 2 groups of specimens, non-aged and artificially aged (stored for 90 days in water at 37°C). Statistical differences were assessed using one-way or two-way parametric analysis of variance (ANOVA) with Tukey's or Šídák's post-hoc test, or the non-parametric Kruskal-Wallis test with Dunn's post-hoc test. A p-value of less than 0.05 was considered statistically significant.Results. The mechanical properties of the materials varied significantly. Among the non-aged materials, the 3D-printed resin exhibited the highest Shore D hardness (85.3D), but it decreased significantly after 90 days of water storage (80.4D, p < 0.0001). The unpolished heat curing acrylic showed the highest resistance to artificial aging (p = 0.0436). However, its hardness decreased significantly after polishing (81.0D vs. 83.4D, p = 0.0015). The conventional heat curing material also exhibited superior flexural properties (σ = 89.63 MPa, E = 2616 MPa). All tested materials were susceptible to deterioration due to aging. Conclusions.The conventional method of occlusal splint fabrication remains the optimal choice, particularly for long-term use. However, it is still necessary to develop materials that are resistant to aging in order to ensure successful clinical performance.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How does artificial aging affect the mechanical properties of occlusal splint materials processed via various technologies?

Weżgowiec,

Małysa,

Więckiewicz

2024

Dent. Med. Probl.

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“…Some new, more resistant materials are being searched for; however, most of the attention of the producers focuses on the composite blocks used for teeth restoration [25]. Another interesting study [26] showed the shear bond strength of materials used for the fabrication of occlusal splints, which shows that not only 3D-printed materials are influenced by the artificial aging procedures.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Polishing and Artificial Aging on BioMed Amber® Resin’s Mechanical Properties

Paradowska-Stolarz

Mikulewicz

Więckiewicz

et al. 2023

JFB

Self Cite

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Currently, 3D print is becoming more common in all branches of medicine, including dentistry. Some novel resins, such as BioMed Amber (Formlabs), are used and incorporated to more advanced techniques. The aims of the study were to check whether or not polishing and/or artificial aging influences the properties of the 3D-printed resin. A total of 240 specimens of BioMed Resin were printed. Two shapes (rectangular and dumbbell) were prepared. Of each shape, 120 specimens were divided into four groups each (with no influence, after polishing only, after artificial aging only, and after both polishing and artificial aging). Artificial aging took place in water at the temperature of 37 °C for 90 days. For testing, the universal testing machine (Z10-X700, AML Instruments, Lincoln, UK) was used. The axial compression was performed with the speed of 1mm/min. The tensile modulus was measured with the constant speed of 5 mm/min. The highest resistance to compression and tensile test were observed in the specimens that were neither polished nor aged (0.88 ± 0.03 and 2.88 ± 0.26, respectively). The lowest resistance to compression was observed in the specimens that were not polished, but aged (0.70 ± 0.02). The lowest results of the tensile test were observed when specimens were both polished and aged (2.05 ± 0.28). Both polishing and artificial aging weakened the mechanical properties of the BioMed Amber resin. The compressive modulus changed much with or without polishing. The tensile modulus differed in specimens that were either polished or aged. The application of both did not change the properties when compared to the polished or aged probes only.

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“…A total of 1,000 cycles were performed. Then the specimens were tested for SBS 34) . For shear bond testing, a chisel was connected to a Universal Testing Machine (AG-IS 500N, SHIMADZU, Kyoto, Japan).…”

Section: Enamel Shear Bond Strength (Sbs)mentioning

confidence: 99%

Novel self-etch adhesive with antibacterial and protein-repellent functions to prevent enamel demineralization

et al. 2018

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Enamel demineralization is the most undesired side-effect of fixed orthodontic treatments. This study were to develop a novel adhesive that is self-etching instead of using the traditional etching method, and to form a sealant on the enamel to prevent demineralization. 2-methacryloyloxyethyl phosphorylcholine (MPC) and quaternary ammonium dimethylaminohexadecyl methacrylate (DMAHDM) were mixed into a self-etch adhesive (Adper Easy One, 3M, St. Paul, MN, USA; referred to as AEO). Enamel shear bond strength (SBS) was measured. Protein adsorption onto the resins was measured. An oral microcosm biofilm model with saliva was tested. Incorporation of 7.5% MPC and 5% DMAHDM into AEO did not reduce the SBS (p>0.1). AEO with 7.5% MPC+5% DMAHDM had protein adsorption that was only 1/18 that of AEO control. AEO with 7.5% MPC+5% DAMHDM had much stronger antibacterial properties (p<0.05). In conclusion, the new self-etch adhesive with MPC and DAMHDM greatly reduced protein adsorption and inhibited biofilm viability.

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Effect of Thermocycling on the Shear Bond Strength of Different Resins Bonded to Thermoplastic Foil Applied in Occlusal Splint Therapy

Abstract: The shear bond strength between the self-cured resin and the thermoplastic foil was higher and more resistant to aging than the shear bond strength between the light-cured resin and the thermoplastic foil.

Cited by 5 publications

References 27 publications

How does artificial aging affect the mechanical properties of occlusal splint materials processed via various technologies?

How does artificial aging affect the mechanical properties of occlusal splint materials processed via various technologies?

The Influence of Polishing and Artificial Aging on BioMed Amber® Resin’s Mechanical Properties

Novel self-etch adhesive with antibacterial and protein-repellent functions to prevent enamel demineralization

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