Influence of irradiation seguence on physical properties of dual-cured resin cements.

辐照顺序对双固化树脂水门汀物理性能的影响。

• 批准号: 04671170
• 负责人: KURODA Takashi
• 金额: $ 1.34万
• 依托单位: Nihon University School of Dentistry
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04671170/
• 关键词: Resin cements; Dual-cured type; Pre-mix activation

IT has been reported that the bond strength of dual-cured resin cements is influenced by the light energy through the resin materials. The purpose of this study was to examine the relationship between the order in which a dual-cured resin cement is light activated and the bond strength of the reshin cement. Also, the setting time and film thickness with various irradiation procedures were evaluated from the clinical perspective.Three experiments were designed to study the influence of the following factors : (1) pre-mix activation (activation of only the liquid prior to mixing), (2) post-mix activation according to the manufacturer's instructions, (3) no-light activation.The setting time of cement mix with pre-mix activation was shorter than that with no activation. No difference was observed between the specimen with pre-mix activation and that with no activation regarding the film thickness of the cement mix. The compressive strength and flexural strength were influenced by irradiation sequences. The Knoop Hardness Number on the longitudinally sectioned surface increased with the pre-mix activation. The pre-mix irradiation to the liquid before cement mixing is effective even without irradiation to the cement after placement. Camphoroquinone in the liquid is placed in a reactive condition by activation. This condition apparently generates free radicals and continues during handling time. This active condition makes the pre-mixed bond strength without irradiation after placement.Further studies are needed to define the kinetics and mechanisms of the camphoroquinone curing system.

据报道，双固化树脂粘固剂的粘结强度受通过树脂材料的光能的影响。本研究的目的是检查的顺序，其中一个双固化树脂水泥是光活化和的雷欣水泥的粘结强度之间的关系。此外，从临床角度评估了不同照射程序的固化时间和膜厚度。设计了三个实验来研究以下因素的影响：（1）预混活化（在混合前仅活化液体），（2）根据制造商的说明进行混合后活化，（3）无光激发，预拌激发后水泥混合料的凝结时间比无光激发的水泥混合料短。关于骨水泥混合物的膜厚度，在有预混合活化的样本和没有活化的样本之间没有观察到差异。抗压强度和抗折强度受辐照顺序的影响。纵切面上的努氏硬度值随预混活化而增加。在水泥混合之前对液体进行预混合照射是有效的，即使在放置之后不对水泥进行照射。通过活化将液体中的樟脑醌置于反应条件下。这种情况显然会产生自由基，并在处理期间持续存在。这种活性条件使得预混粘结强度在放置后无需辐照。需要进一步的研究来确定邻苯二酚固化体系的动力学和机理。

项目成果

宮崎真至,秋山佳英,日野浦光,滝川智義,黒田隆,小野瀬英雄: "デュアルキュアータイプのレジンセメントに関する研究-とくに前照射方式が二重結合の反応率におよぼす影響について-" 歯科審美. 6. 120-121 (1993)

Masashi Miyazaki、Yoshihide Akiyama、Hikaru Hinoura、Tomoyoshi Takikawa、Takashi Kuroda、Hideo Onose：“双固化型树脂水泥的研究 - 特别是预照射方法对双键反应速率的影响 -”牙科美学 6。 120-121 (1993)

秋山 佳英, 五十嵐 薫, 宮島 力 滝川 智義, 黒田 隆,小野瀬 英雄: "コンポシットレジンインレーに関する研究 -とくにセメントの液体に対する前照射がその理工学的性質におよぼす影響-" 日本歯科保存学雑誌 春季学会講演抄録集. 35. 99 (1992)

Yoshihide Akiyama、Kaoru Igarashi、Chikara Miyajima、Tomoyoshi Takikawa、Takashi Kuroda、Hideo Onose：“复合树脂嵌体的研究 - 特别是预辐照对水泥液体对其科学和工程性能的影响 -” 日本保守牙科杂志，春季会议讲座摘要集。 35. 99 (1992)

Masashi Miyazaki, Yoshihide Akiyama, Ko Hinoura, Tomoyoshi Takigawa, Takashi Kuroda, Hideo Onose: "Study on Dual-Cured Resin Cements -Influence of Irradiation Sequence for the Liquid of Resin Cement on the Degree of Conversion-" Journal of Esthetic Dentis

Masashi Miyazaki、Yoshihide Akiyama、Ko Hinoura、Tomoyoshi Takikawa、Takashi Kuroda、Hideo Onose：“双固化树脂水泥的研究 - 树脂水泥液体的辐照顺序对转化程度的影响 -” 美容牙科杂志

秋山 佳英: "コンポジットレジンインレーに関する研究 -とくにレジンセメントの液体に対する前照射が歯質接着性におよぼす影響について-"

Yoshihide Akiyama：“复合树脂嵌体的研究——特别是树脂水泥液预照射对牙齿粘接性能的影响——”