id	keyword
dentistry3000-782	cyclic
dentistry3000-782	instruments
dentistry3000-782	rotary
dentistry3000-782	autoclave
dentistry3000-782	fatigue
dentistry3000-782	journal
dentistry3000-782	titanium
dentistry3000-782	files
dentistry3000-782	nickel
dentistry3000-782	sterilization