Answer:
What is always coming every day, but never arrives until the next?
What dentists battle on a daily basis
Even if you throw it away, it still comes back.
If you are to keep it, you must first give it to me. What is it?
What instrument can make any sound and be heard but not touched or seen?
Some try to hide some try to cheat. But time will show we always will meet. Try as you might to guess my name. I promise you'll know when you I do claim.