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논문 기본 정보

자료유형
학술저널
저자정보
Neves Aline Borburema (Department of Pediatric Dentistry and Orthodontics Universidade Federal do Rio de Janeiro – UFRJ Sc) Lopes Laísa Inara Gracindo (Department of Pediatric Dentistry and Orthodontics Universidade Federal do Rio de Janeiro – UFRJ Sc) Bergstrom Tamiris Gomes (Department of Pediatric Dentistry and Orthodontics Universidade Federal do Rio de Janeiro – UFRJ Sc) Silva Aline Saddock Sá da (Laboratory of Nuclear Instrumentation Universidade Federal do Rio de Janeiro – UFRJ Rio de Janeiro) Lopes Ricardo Tadeu (Laboratory of Nuclear Instrumentation Universidade Federal do Rio de Janeiro – UFRJ Rio de Janeiro) Neves Aline de Almeida (Department of Pediatric Dentistry and Orthodontics Universidade Federal do Rio de Janeiro – UFRJ Sc)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제46권 제4호
발행연도
2021.11
수록면
1 - 9 (9page)
DOI
10.5395/rde.2021.46.e57

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Objectives: This 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 Methods: Forty 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. Results: Ketac 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). Conclusions: Major 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.

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