GICs	Glass ionomer cements
ND	Nanodiamond
EDX	Energy dispersive X-ray spectroscopy
SEM	Scanning electron microscope
ISO	International Standard Organization
HV	Hardness Vickers
ASTM	American Society for Testing and Materials
ASTM G99	Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus
ASTMG133	Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
Al2O3	Aluminium oxide
FTIR	Fourier-transform infrared spectroscopy
NMR	Nuclear magnetic resonance
CoF	Coefficient of friction
Sa	Areal roughness parameter
Ra	Profile roughness parameter