Visco-Elastic Properties of Soft Relining Materials – Review

Hristov, Ilian; Slavchev, Diyan; Zlatev, Stefan; Alexandrov, Svetlin

doi:10.5272/jimab.2017232.1571

Cited by 3 publications

(4 citation statements)

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“…The use of acrylic full and partial removable dentures can cause problems in the mouth, such as dryness, burning or pain, which are most often caused by mechanical damage to the mucosa [1][2][3]. The soft relining materials that cover the mucosa surface of the prosthesis are intended to support the prosthetic treatment and restore the physiological function of the stomatognathic system [1].…”

Section: Introductionmentioning

confidence: 99%

“…Relining, thanks to its flexible properties, absorbs the pressure of the denture plate, thanks to which it relieves pain and facilitates adaptation to new dentures. The flexible layer also reduces the traumatizing effect of the prosthesis on the muco-bone substrate by evenly distributing the chewing forces and better fitting the prosthesis [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…where: Fmax-maximum recorded force expressed in N; A-initial area of the silicone connection or the cross-section of silicone layers in a plane parallel to the base of the sample with acrylic, in practice the area determined by the internal diameter of the polyethylene ring, expressed in mm 2 .…”

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Analysis of Changes in the Tensile Bond Strenght of Soft Relining Material with Acrylic Denture Material

et al. 2021

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Abrasions and pressure ulcers on the oral mucosa are most often caused by excessive pressure or incorrect fitting of the denture. The use of soft relining materials can eliminate pain sensations and improve patient comfort. The main functional feature of soft elastomeric materials is the ability to discharge loads from the tissues of the mucosa. (1) Background: The aim of the work was a comparative laboratory study of ten materials used for the soft lining of acrylic dentures. (2) Methods: There were materials based on acrylates (Vertex Soft, Villacryl Soft, Flexacryl Soft) and silicones (Sofreliner Tough Medium, Sofreliner Tough Medium, Ufi Gel SC, GC Reline Soft, Elite Soft Relining, Molloplast). Laboratory tests include the analysis of the tensile bond strength between the relining material and the acrylic plate of the prosthesis. The tests were conducted taking into account 90-day term aging in the distilled water environment based on the methodology presented in the European Standard ISO 10139-2. (3) Results: After three months of observation, the highest strength of the joint was characterized by Flexacryl Soft acrylic, for which the average value was 2.5 MPa. The lowest average value of 0.89 MPa was recorded for the GC Reline Soft silicone material. Over time, an increase in the value of the strength of the combination of acrylic materials and a decrease in these values in the case of silicone materials was observed. (4) Conclusion: Each of the tested silicone materials showed all three types of damage, from adhesive to mixed to cohesive. All acrylic-based materials showed an adhesive type of failure. Time did not affect the type of destruction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Changes in the Tensile Bond Strenght of Soft Relining Material with Acrylic Denture Material

et al. 2021

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“…It is then stirred and left covered while the polymerization takes place. If there are errors in dosing the monomer and a larger amount of it is used, the reaction will be accelerated, and the polymerization shrinkage will be more significant [34]. It is also possible that the porosity of the resin is increased.…”

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confidence: 99%

Comparison between Conventional PMMA and 3D Printed Resins for Denture Bases: A Narrative Review

et al. 2022

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The aim of the current paper is to review the available literature reporting on comparative studies of heat-cured resins and three-dimensionally printed biomaterials for denture bases in terms of their composition, properties, fabrication techniques and clinical performance. The methodology included applying a search strategy, defining inclusion and exclusion criteria, selecting studies to summarize the results. Searches of PubMed, Scopus, and Embase databases were performed independently by three reviewers to gather literature published between 2018 and 2021. A total of 135 titles were obtained from the electronic databases, and the application of exclusion criteria resulted in the identification of 42 articles pertaining to conventional and 3D printed technology for removable dentures. The main disadvantages of the heat-cured resins for removable dentures are that they require lots of special equipment, skilled personnel and time. Emerging technologies, such as 3D printed dentures, have the potential to alleviate these problems allowing for faster patient rehabilitation. With the development of digital dentistry, it is becoming increasingly necessary to use 3D printed resin materials for the manufacturing of removable dentures. However, further research is required on the existing and developing materials to allow for advancement and increase its application in removable prosthodontics.

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Comparative Assessment of the Adhesion Forces of Soft Silicone Materials to the Denture Base Material (PMMA) Conditioned with Sandblasting

Kuźniarski,

Huss,

Dąbrowa

et al. 2024

Materials

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Background: In patients undergoing surgery for oral cancer, soft support materials are used to minimise trauma to the soft tissues. Silicone-based liners are widely used in prosthetic dentistry. A prerequisite for long-term Adhesion of the liner to the denture base is largely dependent on the surface preparation of the denture material. Objectives: The aim of the present study was to investigate whether surface preparation of the acrylic material by sandblasting increases the adhesion of the silicone support material to the acrylic denture plate. Material and Methods: The study included adhesion testing of four silicone-based soft cushioning materials (Silagum Comfort, Elite Soft Re-lining, Ufi Gel SC, Mucopren Soft) on a total of 270 samples. Each material was tested on 15 samples. Three subgroups with different surfaces were separated: 1 raw—standard surface treatment with a cutter, and 2 sandblasted, with 100 and 350 µm alumina grain at 90°. The samples were subjected to seasoning: 24 h and six weeks. The adhesion force of silicone to acrylic was measured by performing a tensile test using a universal two-column testing machine. Results: The highest bond strength was recorded for Silagum on the surface prepared using 100 µm abrasive and seasoned for 6 weeks (291.5 N). The smallest among the maximum forces was recorded for the Mucopren material (81.1 N). For the Mucopren system with a raw and sand-blasted surface (350 µm), the adhesion strength increased after six weeks. In contrast, the durability of the joint decreased for the 100 µm sandblasted surface. The Elite material exhibited similar values for maximum forces (271.8 N) and minimum forces (21.1 N). The highest strength (226.1 N) was recorded for the sample from the group prepared with 350 µm abrasive and seasoned for 24 h. The lowest value (72.6 N) occurred for the sample from the group with 100 µm abrasive and seasoned for 6 weeks. Conclusions: Sandblasting of acrylic plastic improves adhesion to selected relining silicones. 2. The size of the abrasive employed has an impact on the adhesion between the acrylic plastic and the bedding silicone. 3. In the case of some relining systems (Mucopren), an increase in roughness through sandblasting has the effect of reducing the durability of the bonded joint.

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Visco-Elastic Properties of Soft Relining Materials – Review

Cited by 3 publications

References 0 publications

Analysis of Changes in the Tensile Bond Strenght of Soft Relining Material with Acrylic Denture Material

Analysis of Changes in the Tensile Bond Strenght of Soft Relining Material with Acrylic Denture Material

Comparison between Conventional PMMA and 3D Printed Resins for Denture Bases: A Narrative Review

Comparative Assessment of the Adhesion Forces of Soft Silicone Materials to the Denture Base Material (PMMA) Conditioned with Sandblasting

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