I had a dental crown placed on one of my front teeth, exactly a year ago on April 2018. From around June 2018 my dental crown started giving sensitivity. Whenever I open my mouth during strong wind , or sometimes after smoking or chewing something, U feel the sensitivity . And whenever I press the gums above the crown teeth I feel the sensitivity too. However my teeth next to the crown teeth is getting decayed day by day. Is it because of this or I have some problem with the crown teeth?