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UV-VIS spectra and photoinitiation behaviors of acylphosphine oxide and bisacylphosphine oxide derivatives in unfilled, light-cured dental resins
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- IKEMURA Kunio
- Department of Research and Development, Shofu Inc.
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- ICHIZAWA Kensuke
- Department of Research and Development, Shofu Inc.
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- YOSHIDA Mariko
- Department of Research and Development, Shofu Inc.
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- ITO So
- Department of Research and Development, Shofu Inc.
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- ENDO Takeshi
- Molecular Engineering Institute, Kinki University Chemical Resources Laboratory, Tokyo Institue of Technology
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Description
The aims of this study were to investigate the photoinitiation behaviors of acylphosphine oxide (APO) and bisacylphosphine oxide (BAPO) derivatives in comparison to D,L-camphorquinone (CQ)/tertiary amine (EDAB) system. Fifty six kinds of experimental unfilled, light-cured resins were prepared using APO, BAPO, CQ, EDAB, resin monomers, and adhesive monomers. The measurements of ultraviolet-visible (UV-VIS) spectroscopy, photopolymerization with differential scanning calorimeter (photo-DSC) and degree of conversion (DC) determination were performed. Results showed that the UV-VIS spectra of all APO and BAPO derivatives possessed λmax ranging between 365 and 416 nm. Their photoinitiation behaviors were not influenced by acidic adhesive monomers formulated in unfilled Bis-GMA-based resins (p<0.05). Although BAPO exhibited higher reactivity than CQ/EDAB in unfilled 6-methacryloyloxyhexcyl phosphonoacetate (6-MHPA)/ 2-hydroxyethyl methacrylate (HEMA) and 6-MHPA/glycerol monomethacrylate (GM)-based resins, it was found that there were no statistically significant differences in DC (%) between BAPO [44.2(6.5)–51.2(4.3)] and CQ/EDAB [42.4(4.4)–47.5(3.7)] (p<0.05). It was concluded that APO and BAPO photoinitiators exhibited reactivity comparable to that of CQ/tertiary amine system.
Journal
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- Dental Materials Journal
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Dental Materials Journal 27 (6), 765-774, 2008
The Japanese Society for Dental Materials and Devices
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Keywords
Details 詳細情報について
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- CRID
- 1390282679694539008
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- NII Article ID
- 110007004980
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- NII Book ID
- AA10443149
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- COI
- 1:CAS:528:DC%2BD1MXisFChtb4%3D
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- ISSN
- 18811361
- 02874547
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- PubMed
- 19241683
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- NDL Digital Collections (NII-ELS)
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed
