Polymerization and photoinitiation behavior in the light‐cured dental composite resins

Yukio Fujimori; Takashi Kaneko; Takahiko Kaku; Naoki Yoshioka; Hiroyuki Nishide; Eishun Tsuchida

doi:10.1002/pat.1992.220030804

Polymerization and photoinitiation behavior in the light‐cured dental composite resins

Yukio Fujimori, Takashi Kaneko, Takahiko Kaku, Naoki Yoshioka, Hiroyuki Nishide, Eishun Tsuchida

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The polymerization behavior and photoinitiation process in the visible light‐cured dental composite resins were studied using ESR and IR spectroscopies. The concentration of methacryl propagating radical corresponded to the transmittance of irradiated light. While the radical was stable and long‐lived in the cured resin, its concentration quickly decreased in the oral cavity due to the ventilation of atmospheric oxygen accompanied by respiration. Camphorquinone radical in the presence of tertiary amine easily initiated the radical polymerization. A decrease in monomer consumption was explained by the inhibition effect of oxygen in the photoinitiation process. Post‐curing by the residual radical proceeded effectively in the deeper part of the resin.

Original language	English
Pages (from-to)	437-441
Number of pages	5
Journal	Polymers for Advanced Technologies
Volume	3
Issue number	8
DOIs	https://doi.org/10.1002/pat.1992.220030804
Publication status	Published - 1992 Dec
Externally published	Yes

Keywords

Camphorquinone
Dental composite resin
ESR spectra
Light‐cured resin
Monomer conversion
Radical concentration

ASJC Scopus subject areas

Polymers and Plastics

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10.1002/pat.1992.220030804

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abstract = "The polymerization behavior and photoinitiation process in the visible light‐cured dental composite resins were studied using ESR and IR spectroscopies. The concentration of methacryl propagating radical corresponded to the transmittance of irradiated light. While the radical was stable and long‐lived in the cured resin, its concentration quickly decreased in the oral cavity due to the ventilation of atmospheric oxygen accompanied by respiration. Camphorquinone radical in the presence of tertiary amine easily initiated the radical polymerization. A decrease in monomer consumption was explained by the inhibition effect of oxygen in the photoinitiation process. Post‐curing by the residual radical proceeded effectively in the deeper part of the resin.",

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AU - Fujimori, Yukio

AU - Kaneko, Takashi

AU - Kaku, Takahiko

AU - Yoshioka, Naoki

AU - Nishide, Hiroyuki

AU - Tsuchida, Eishun

PY - 1992/12

Y1 - 1992/12

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AB - The polymerization behavior and photoinitiation process in the visible light‐cured dental composite resins were studied using ESR and IR spectroscopies. The concentration of methacryl propagating radical corresponded to the transmittance of irradiated light. While the radical was stable and long‐lived in the cured resin, its concentration quickly decreased in the oral cavity due to the ventilation of atmospheric oxygen accompanied by respiration. Camphorquinone radical in the presence of tertiary amine easily initiated the radical polymerization. A decrease in monomer consumption was explained by the inhibition effect of oxygen in the photoinitiation process. Post‐curing by the residual radical proceeded effectively in the deeper part of the resin.

KW - Camphorquinone

KW - Dental composite resin

KW - ESR spectra

KW - Light‐cured resin

KW - Monomer conversion

KW - Radical concentration

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Polymerization and photoinitiation behavior in the light‐cured dental composite resins

Abstract

Keywords

ASJC Scopus subject areas

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