(Concern) When I eat food with my left molar, I sometimes feel a strange sensation in the filled area.

I am brushing my teeth thoroughly and recently received a dental check-up with no issues diagnosed. However, sometimes when I chew food on the left side, I feel a slight lifting sensation in the filled area. I've been concerned about this for a while, and since the dental check-up mentioned above is a simple exam provided free of charge by the government every two years during my health screening, I am considering whether I should get a proper, thorough examination.