Fig. 1
From: Biocompatible orthodontic cement with antibacterial capability and protein repellency
NAg particles and enamel shear bond strengths. A Typical TEM image of NAg particles. B Enamel shear bond strengths of cements. The incorporation of MPC had no adverse effects on bond strength until the mass fraction reached 3% (p < 0.05). The same letters indicate no statistical difference between the groups (p > 0.1), while the different letters indicate a significant difference (p < 0.05)