open access

https://doi.org/10.14943/doctoral.k15945

https://hdl.handle.net/2115/92448

新規光重合型レジンセメントの接着性能に関する研究

英語

polymerization

2024-03-25

Hokkaido University

12

The purpose of this study was to evaluate the microtensile bond strength (μTBS) and Knoop hardness number (KHN) of a novel experimental light-cured resin cement (HL). Eighteen flat dentin surfaces of human molars were polished using #600 SiC paper and bonded to CAD/CAM resin blocks with the respective resin cements and composites: HL, Panavia V5 (PV), and Clearfil AP-X (AP). All specimens were stored in distilled water at 37 ◦C for 24 h and 7 days. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) observations were performed to evaluate filler morphology and to detect the elements. The resin cements had a significant effect on the immediate μTBS (F = 22.59, p < 0.05) and after water storage μTBS (F = 22.83, p < 0.05). Significant differences(p < 0.05) in the KHN between the tested materials were observed, and HL indicated the highest KHN when compared with PV. HL showed a combination of the regular-shaped filler and spherical-shaped filler within the matrix. Silicon was detected in HL from the EDX evaluation. HL exhibited better bonding performance and polymerization, which may have contributed to the improvement of the adhesive strength.

2024-03-25

甲第15945号

博士(歯学)

(主査) 教授 友清 淳, 教授 吉田 靖弘, 特任教授 菅谷 勉

歯学院(口腔医学専攻)

博士論文

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