Pengaruh Penambahan Kitosan terhadap Compressive Strength Semen Ionomer Kaca Modifikasi Resin (The Effect of Chitosan Addition to the Compressive Strength of Resin Modified Glass Ionomer Cement)

Abstract

Background: Resin modified glass ionomer cement (RMGIC) is one of the restorative material frequently used in dentistry. RMGIC is brittle and the mechanical properties is poor because the particle sizes are tiny and bonding of components is weak. To improve the mechanical properties, RMGIC is added by alternative materials i.e chitosan. Objective: To investigate the effect of chitosan addition to the compressive strength of RMGIC. Methods: Twenty four RMGIC samples were molded in silinder mold space, 3mm in diameter and 6 mm in height. The samples were devided into 4 groups, which they were control group or without chitosan addition, and treatment groups with 0.013%, 0.026%, and 0.039% chitosan addition. The compressive strength was performed using a universal testing machine with 1 mm/minute of crosshead speed until fracture. Result. The addition of 0.039% chitosan increased the compressive strength of RMGIC. Conclusion: Chitosan enhanced the compressive strength of RMGIC.