Hello...I have been treated by my my dentist... He is been working on my denture from invisaling to replacing one root canal crown..I just went to visit another Dr. since I was having discomfort on the crown that has been recently replaced, bad smell was coming out, this new Dr. took new X-rays and show an open margin, I went the next day to let my Dr. know about my concernings, He reviewed the x-rays taken by his team and everything looked ok. What should I do? should I look for a third opinion? I do know that having an open margin can lead to decay. please begging your advise. thank you.