UV-VIS spectra and photoinitiation behaviors of acylphosphine oxide and bisacylphosphine oxide derivatives in unfilled, light-cured dental resins

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概要

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• 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 416nm. 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.

著者

• IKEMURA Kunio

  Department of Research and Development, Shofu Inc.

• ICHIZAWA Kensuke

  Department of Research and Development, Shofu Inc.

• YOSHIDA Mariko

  Department of Research and Development, Shofu Inc.

• ITO So

  Department of Research and Development, Shofu Inc.

• ENDO Takeshi

  Molecular Engineering Institute, Kinki University

• Ikemura Kunio

  Department Of Research And Development Shofu Inc.

• Ikemura Kunio

  Shofu Inc. Kyoto Jpn

• Ichizawa Kensuke

  Department Of Research And Development Shofu Inc.

• Ichizawa Kensuke

  Department Of Polymer Science And Engineering Kyoto Institute Of Technology

• Endo Takeshi

  Kinki Univ. Fukuoka Jpn

• Ikemura Kunio

  Department Of Oral And Maxillofacial Surgery School Of Medicine University Of Occupational And Envir

• Ito So

  Department Of Research And Development Shofu Inc.

• Endo Takeshi

  Molecular Engineering Institute Kinki University

• Yoshida Mariko

  Department Of Research And Development Shofu Inc.

• Yoshida Mariko

  Department Of Mathematics Meijo University

• Ito So

  Department of Mechanical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561, Japan

• YOSHIDA Mariko

  Department of Applied Chemistry, Kyushu Institute of Technology

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