Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties
The objective of this study was to transfer the concept of ductile particle reinforcement to restorative dentistry and to introduce an innovative glass ionomer material that is based on the dispersion of PEG-PU micelles. It was hypothesized that reinforcing a conventional glass ionomer in this way i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Journal of Functional Biomaterials |
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| Online Access: | https://www.mdpi.com/2079-4983/14/11/534 |
| _version_ | 1797458795252678656 |
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| author | Philipp Messer-Hannemann Henrik Böttcher Sven Henning Falk Schwendicke Susanne Effenberger |
| author_facet | Philipp Messer-Hannemann Henrik Böttcher Sven Henning Falk Schwendicke Susanne Effenberger |
| author_sort | Philipp Messer-Hannemann |
| collection | DOAJ |
| description | The objective of this study was to transfer the concept of ductile particle reinforcement to restorative dentistry and to introduce an innovative glass ionomer material that is based on the dispersion of PEG-PU micelles. It was hypothesized that reinforcing a conventional glass ionomer in this way increases the flexural strength and fracture toughness of the material. Flexural strength and fracture toughness tests were performed with the novel reinforced and a control glass ionomer material (DMG, Hamburg, Germany) to investigate the influence of the dispersed micelles on the mechanical performance. Transmission electron microscopy was used to identify the dispersed micelles. Fracture toughness and flexural strength were measured in a 3-point-bending setup using a universal testing machine. Before performing both tests, the specimens were stored in water at 37 °C for 23 h. The fracture toughness (MPa∙m<sup>0.5</sup>) of the novel glass ionomer material (median: 0.92, IQR: 0.89–0.94) was significantly higher than that of the control material (0.77, 0.75–0.86, <i>p</i> = 0.0078). Significant differences were also found in the flexural strength (MPa) between the reinforced (49.7, 45.2–57.8) and control material (41.8, 40.6–43.5, <i>p</i> = 0.0011). Reinforcing a conventional glass ionomer with PEG-PU micelles improved the mechanical properties and may expand clinical applicability of this material class in restorative dentistry. |
| first_indexed | 2024-03-09T16:43:14Z |
| format | Article |
| id | doaj.art-a5a0d50fc0254c3bbf2952ee07ce51fc |
| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-03-09T16:43:14Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Biomaterials |
| spelling | doaj.art-a5a0d50fc0254c3bbf2952ee07ce51fc2023-11-24T14:49:58ZengMDPI AGJournal of Functional Biomaterials2079-49832023-10-01141153410.3390/jfb14110534Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical PropertiesPhilipp Messer-Hannemann0Henrik Böttcher1Sven Henning2Falk Schwendicke3Susanne Effenberger4DMG Dental-Material Gesellschaft mbH, 22547 Hamburg, GermanyDMG Dental-Material Gesellschaft mbH, 22547 Hamburg, GermanyFraunhofer Institute for Microstructure of Materials and Systems IMWS, 06120 Halle (Saale), GermanyDepartment of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, 14197 Berlin, GermanyDMG Dental-Material Gesellschaft mbH, 22547 Hamburg, GermanyThe objective of this study was to transfer the concept of ductile particle reinforcement to restorative dentistry and to introduce an innovative glass ionomer material that is based on the dispersion of PEG-PU micelles. It was hypothesized that reinforcing a conventional glass ionomer in this way increases the flexural strength and fracture toughness of the material. Flexural strength and fracture toughness tests were performed with the novel reinforced and a control glass ionomer material (DMG, Hamburg, Germany) to investigate the influence of the dispersed micelles on the mechanical performance. Transmission electron microscopy was used to identify the dispersed micelles. Fracture toughness and flexural strength were measured in a 3-point-bending setup using a universal testing machine. Before performing both tests, the specimens were stored in water at 37 °C for 23 h. The fracture toughness (MPa∙m<sup>0.5</sup>) of the novel glass ionomer material (median: 0.92, IQR: 0.89–0.94) was significantly higher than that of the control material (0.77, 0.75–0.86, <i>p</i> = 0.0078). Significant differences were also found in the flexural strength (MPa) between the reinforced (49.7, 45.2–57.8) and control material (41.8, 40.6–43.5, <i>p</i> = 0.0011). Reinforcing a conventional glass ionomer with PEG-PU micelles improved the mechanical properties and may expand clinical applicability of this material class in restorative dentistry.https://www.mdpi.com/2079-4983/14/11/534glass ionomerdental restorative materialnovel material conceptparticle reinforcementtransmission electron microscopy (TEM)flexural strength |
| spellingShingle | Philipp Messer-Hannemann Henrik Böttcher Sven Henning Falk Schwendicke Susanne Effenberger Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties Journal of Functional Biomaterials glass ionomer dental restorative material novel material concept particle reinforcement transmission electron microscopy (TEM) flexural strength |
| title | Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties |
| title_full | Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties |
| title_fullStr | Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties |
| title_full_unstemmed | Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties |
| title_short | Concept of a Novel Glass Ionomer Restorative Material with Improved Mechanical Properties |
| title_sort | concept of a novel glass ionomer restorative material with improved mechanical properties |
| topic | glass ionomer dental restorative material novel material concept particle reinforcement transmission electron microscopy (TEM) flexural strength |
| url | https://www.mdpi.com/2079-4983/14/11/534 |
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