Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study
ObjectivesThis study aimed to compare and evaluate the porosity and pore size distribution of high-viscosity glass ionomer cements (HVGICs) and conventional glass ionomer cements (GICs) using micro-computed tomography (micro-CT).Materials and MethodsForty cylindrical specimens (n = 10) were produced...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Korean Academy of Conservative Dentistry
2021-11-01
|
| Series: | Restorative Dentistry & Endodontics |
| Subjects: | |
| Online Access: | http://rde.ac/upload/pdf/rde-46-e57.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849710324954955776 |
|---|---|
| author | Aline Borburema Neves Laísa Inara Gracindo Lopes Tamiris Gomes Bergstrom Aline Saddock Sá da Silva Ricardo Tadeu Lopes Aline de Almeida Neves |
| author_facet | Aline Borburema Neves Laísa Inara Gracindo Lopes Tamiris Gomes Bergstrom Aline Saddock Sá da Silva Ricardo Tadeu Lopes Aline de Almeida Neves |
| author_sort | Aline Borburema Neves |
| collection | DOAJ |
| description | ObjectivesThis study aimed to compare and evaluate the porosity and pore size distribution of high-viscosity glass ionomer cements (HVGICs) and conventional glass ionomer cements (GICs) using micro-computed tomography (micro-CT).Materials and MethodsForty cylindrical specimens (n = 10) were produced in standardized molds using HVGICs and conventional GICs (Ketac Molar Easymix, Vitro Molar, MaxxionR, and Riva Self-Cure). The specimens were prepared according to ISO 9917-1 standards, scanned in a high-energy micro-CT device, and reconstructed using specific parameters. After reconstruction, segmentation procedures, and image analysis, total porosity and pore size distribution were obtained for specimens in each group. After checking the normality of the data distribution, the Kruskal-Wallis test followed by the Student-Newman-Keuls test was used to detect differences in porosity among the experimental groups with a 5% significance level.ResultsKetac Molar Easymix showed statistically significantly lower total porosity (0.15%) than MaxxionR (0.62%), Riva (0.42%), and Vitro Molar (0.57%). The pore size in all experimental cements was within the small-size range (< 0.01 mm3), but Vitro Molar showed statistically significantly more pores/defects with a larger size (> 0.01 mm3).ConclusionsMajor differences in porosity and pore size were identified among the evaluated GICs. Among these, the Ketac Molar Easymix HVGIC showed the lowest porosity and void size. |
| format | Article |
| id | doaj-art-e8ac76a0ccbc4dec9249336adede1bf9 |
| institution | DOAJ |
| issn | 2234-7658 2234-7666 |
| language | English |
| publishDate | 2021-11-01 |
| publisher | Korean Academy of Conservative Dentistry |
| record_format | Article |
| series | Restorative Dentistry & Endodontics |
| spelling | doaj-art-e8ac76a0ccbc4dec9249336adede1bf92025-08-20T03:14:57ZengKorean Academy of Conservative DentistryRestorative Dentistry & Endodontics2234-76582234-76662021-11-01464e5710.5395/rde.2021.46.e57997Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography studyAline Borburema Neves0Laísa Inara Gracindo Lopes1Tamiris Gomes Bergstrom2Aline Saddock Sá da Silva3Ricardo Tadeu Lopes4Aline de Almeida Neves5Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro – UFRJ, School of Dentistry, Rio de Janeiro, RJ, BrazilDepartment of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro – UFRJ, School of Dentistry, Rio de Janeiro, RJ, BrazilDepartment of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro – UFRJ, School of Dentistry, Rio de Janeiro, RJ, BrazilLaboratory of Nuclear Instrumentation, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, BrazilLaboratory of Nuclear Instrumentation, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, BrazilDepartment of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro – UFRJ, School of Dentistry, Rio de Janeiro, RJ, BrazilObjectivesThis study aimed to compare and evaluate the porosity and pore size distribution of high-viscosity glass ionomer cements (HVGICs) and conventional glass ionomer cements (GICs) using micro-computed tomography (micro-CT).Materials and MethodsForty cylindrical specimens (n = 10) were produced in standardized molds using HVGICs and conventional GICs (Ketac Molar Easymix, Vitro Molar, MaxxionR, and Riva Self-Cure). The specimens were prepared according to ISO 9917-1 standards, scanned in a high-energy micro-CT device, and reconstructed using specific parameters. After reconstruction, segmentation procedures, and image analysis, total porosity and pore size distribution were obtained for specimens in each group. After checking the normality of the data distribution, the Kruskal-Wallis test followed by the Student-Newman-Keuls test was used to detect differences in porosity among the experimental groups with a 5% significance level.ResultsKetac Molar Easymix showed statistically significantly lower total porosity (0.15%) than MaxxionR (0.62%), Riva (0.42%), and Vitro Molar (0.57%). The pore size in all experimental cements was within the small-size range (< 0.01 mm3), but Vitro Molar showed statistically significantly more pores/defects with a larger size (> 0.01 mm3).ConclusionsMajor differences in porosity and pore size were identified among the evaluated GICs. Among these, the Ketac Molar Easymix HVGIC showed the lowest porosity and void size.http://rde.ac/upload/pdf/rde-46-e57.pdfglass ionomer cementsporosityx-ray microtomography |
| spellingShingle | Aline Borburema Neves Laísa Inara Gracindo Lopes Tamiris Gomes Bergstrom Aline Saddock Sá da Silva Ricardo Tadeu Lopes Aline de Almeida Neves Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study Restorative Dentistry & Endodontics glass ionomer cements porosity x-ray microtomography |
| title | Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study |
| title_full | Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study |
| title_fullStr | Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study |
| title_full_unstemmed | Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study |
| title_short | Porosity and pore size distribution in high-viscosity and conventional glass ionomer cements: a micro-computed tomography study |
| title_sort | porosity and pore size distribution in high viscosity and conventional glass ionomer cements a micro computed tomography study |
| topic | glass ionomer cements porosity x-ray microtomography |
| url | http://rde.ac/upload/pdf/rde-46-e57.pdf |
| work_keys_str_mv | AT alineborburemaneves porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy AT laisainaragracindolopes porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy AT tamirisgomesbergstrom porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy AT alinesaddocksadasilva porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy AT ricardotadeulopes porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy AT alinedealmeidaneves porosityandporesizedistributioninhighviscosityandconventionalglassionomercementsamicrocomputedtomographystudy |