| 초록 |
GICs have relatively low mechanical strength such as tensile and flexural strength. To solve the mechanical properties, resin-modified glass-ionomer cements have been developed. Cyclodextrins have hydroxyl groups, 1 of primary hydroxyl group and 2 of secondary hydroxyl group per 1 glucose unit, which can be used chemical modification sites for varies application. In this study, β-cyclodextrin were modified by functionalities such as vinyl group and sulfonic acid or carboxylic acid. FT-IR, ¹H NMR, ¹³C NMR and MALDI-TOF were used for the characterization of the modified β- cylodextrin. Glass ionomer-cements(GICs) ware prepared by photopolymerizing the modified β-cylodextrin with conventional Fuji II LC glass. Finally experimental GICs formulated by cyclodextrin derivatives with vinyl group and carboxylic acid showed highest mechanical strengths such as compressive strength(CS), diamatral tensile strength(DTS) as well as better shrinkages and viscositie. |
