Ceramic inlay

I had 2 ceramic inlays put in about a month ago.  Over time, I have noticed a "click" or "ticking vibration" in one of them when I drink anything cold.  The sensation also happens when switching from hot to cold foods.  Is this normal?  It leads me to believe that there is room for expansion/contraction to occur.  What should I do?

[Hamidreza Nassery , DMD, FICOI]

It sure sounds like there is unfilled space there between the inlay and the tooth.. I would present to the dentist and let him/her know . This may not show on x-ray, so I would keep a close eye on this.. it should be replaced in short if this persist.

hope this helps.