The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum
Dental mold gypsum materials require fine powder, appropriate liquidity, fast curing, and easy-to-perform clinical operations. They require low linear expansion coefficient and high strength, reflecting the master model and facilitating demolding. In this article, the suitable accelerators and reinf...
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MDPI AG
2021-08-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/7/3/117 |
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| author | Liang Ma Qianting Xie Amutenya Evelina Wenjun Long Cunfa Ma Fengshan Zhou Ruitao Cha |
| author_facet | Liang Ma Qianting Xie Amutenya Evelina Wenjun Long Cunfa Ma Fengshan Zhou Ruitao Cha |
| author_sort | Liang Ma |
| collection | DOAJ |
| description | Dental mold gypsum materials require fine powder, appropriate liquidity, fast curing, and easy-to-perform clinical operations. They require low linear expansion coefficient and high strength, reflecting the master model and facilitating demolding. In this article, the suitable accelerators and reinforcing agents were selected as additives to modify dental gypsum. The main experimental methods used were to compare the trends of linear expansion coefficients of several commercially available dental gypsum products over 72 h and to observe the cross-sectional microstructure of cured bodies before and after dental gypsum modification using scanning electron microscopy. By adjusting the application of additives, the linear expansion coefficient of dental gypsum decreased from 0.26% to 0.06%, while the flexural strength increased from 6.7 MPa to 7.4 MPa at 2 h. Formulated samples showed good stability and gelation properties with linear expansion completed within 12 h. It is indicated that the performance of dental gypsum materials can be improved by adding additives and nanomaterials, which provided a good reference for clinical preparation of high-precision dental prosthesis. |
| first_indexed | 2024-03-10T07:38:47Z |
| format | Article |
| id | doaj.art-8bbb7dc79a2a4d1fb7003113548bb8de |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-10T07:38:47Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-8bbb7dc79a2a4d1fb7003113548bb8de2023-11-22T13:11:53ZengMDPI AGGels2310-28612021-08-017311710.3390/gels7030117The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental GypsumLiang Ma0Qianting Xie1Amutenya Evelina2Wenjun Long3Cunfa Ma4Fengshan Zhou5Ruitao Cha6Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences Beijing, Haidian District, Beijing 100083, ChinaCAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, No. 11, Haidian District, Beijing 100190, ChinaDental mold gypsum materials require fine powder, appropriate liquidity, fast curing, and easy-to-perform clinical operations. They require low linear expansion coefficient and high strength, reflecting the master model and facilitating demolding. In this article, the suitable accelerators and reinforcing agents were selected as additives to modify dental gypsum. The main experimental methods used were to compare the trends of linear expansion coefficients of several commercially available dental gypsum products over 72 h and to observe the cross-sectional microstructure of cured bodies before and after dental gypsum modification using scanning electron microscopy. By adjusting the application of additives, the linear expansion coefficient of dental gypsum decreased from 0.26% to 0.06%, while the flexural strength increased from 6.7 MPa to 7.4 MPa at 2 h. Formulated samples showed good stability and gelation properties with linear expansion completed within 12 h. It is indicated that the performance of dental gypsum materials can be improved by adding additives and nanomaterials, which provided a good reference for clinical preparation of high-precision dental prosthesis.https://www.mdpi.com/2310-2861/7/3/117dental gypsumlinear expansion coefficient2 h flexural strengthstabilitygelation properties |
| spellingShingle | Liang Ma Qianting Xie Amutenya Evelina Wenjun Long Cunfa Ma Fengshan Zhou Ruitao Cha The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum Gels dental gypsum linear expansion coefficient 2 h flexural strength stability gelation properties |
| title | The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum |
| title_full | The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum |
| title_fullStr | The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum |
| title_full_unstemmed | The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum |
| title_short | The Effect of Different Additives on the Hydration and Gelation Properties of Composite Dental Gypsum |
| title_sort | effect of different additives on the hydration and gelation properties of composite dental gypsum |
| topic | dental gypsum linear expansion coefficient 2 h flexural strength stability gelation properties |
| url | https://www.mdpi.com/2310-2861/7/3/117 |
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