| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
In order to design a new reversible-adhesion resin cement, the aim of this study was to evaluate the influence of UV-cleavable polyrotaxane (PRX) cross-linker on the bond strength of a MMA-based resin cement. The resin monomer-soluble PRX cross-linker was synthesized and added to a 4-META/MMA TBB resin cement. After bonding procedure, half of the specimens were irradiated with 254nm UV light.Light irradiated group indicated lower bond strength comparing with non-irradiated group. Adding PRX cross linker into 4-META MMA resin cement did not show any negative effect on initial bonding performance. Reversible adhesion effect is only achieved with adding 10% photo PRX. This results mark the beginning of the development of new debonding -on-demand resin cement, will widen the possibility of new clinical procedure.
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