The Effect of Adding Hydroxyapatite on the Flexural Strength of Glass Ionomer Cement
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- ARITA Kenji
- Department of Pediatric Dentistry The University of Tokushima School of Dentistry
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- LUCAS Milanita E.
- Department of Pediatric Dentistry The University of Tokushima School of Dentistry
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- NISHINO Mizuho
- Department of Pediatric Dentistry The University of Tokushima School of Dentistry
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This present study investigated the effects of the addition of hydroxyapatite (HA) on the flexural strength and microstructure of conventional GIC, and its effect on the cement's initial flexural strength at different storage conditions. Specimens were fabricated by mixing HA in whisker or granule form into commercially prepared GIC, and these were subjected to a threepoint bending test and SEM observations. Some specimens were stored in different conditions from dry to wet for 15 minutes to an hour prior to testing. When compared to the control, specimens with 16-25% HA whiskers added at P/L 1.75 showed a significant increase in the flexural strength (p<0.05), and as well with 19% HA whiskers at P/L 1.75 (p<0.001) and 2.33 (p<0.05). A significant increase was also noted for those with 8-25% HA granules added at P/L's 1.75 (p<0.05), 2.5 (p<0.05) and 3.60 (p<0.01). The addition of HA hastens the development of early (15min, 1 hour) flexural strength of GIC in moist or wet conditions. These results indicate that the addition of HA, regardless of form, improve the flexural and microstructural properties of GIC.
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 22 (2), 126-136, 2003
一般社団法人 日本歯科理工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679694373248
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- NII論文ID
- 110002983668
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- NII書誌ID
- AA10443149
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- COI
- 1:CAS:528:DC%2BD3sXnt12lsLY%3D
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- ISSN
- 18811361
- 02874547
- http://id.crossref.org/issn/02874547
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- PubMed
- 12873116
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- NDL-Digital
- CiNii Articles
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- 使用不可