I smell strong odor from floss along the gum line of a crown. Does that suggest I have to have the crown replaced?

The odor may be due to pocket depth between the teeth. It may also be due to less than ideal fit of the crown, or even recurrent decay.  Have your dentist take an xray and also periodontally probe the area. Treatment will depend on his/her findings.

Hi:If there is a food trap around the crown, then this causes bacterial growth that can cause bad breath.  Flossing and rinsing with Oral Essentials Original Mouthwash can help with strong odor.Best,Dr. Maddahi

Courtney, thak you for question. Teeth were designed to act as one organism and be in contact with each other. Any time there is any gaps between teeth, they might serve as a food trap. If not taken care of, bone loss and/or decay will set in creating addional risk of tooth loss. Prevention is a least expensive treatment. Please consider changing that crown sooner then later to prevent above mentioned consequences and an additional expence.

I would agree with the dentist you saw. Anytime you have a gap in-between teeth it acts as a food trap. This trap can cause decay, infection, bone loss and possible eventual tooth loss. Unfortunately you just had the crown placed two years ago but that doesn't change the need for a new crown today. If the new crown is made properly you will eliminate that food trap and any of the possible negative outcomes associated with the food trap. Good luck! 

A couple of thoughts. 1. Is there a space between that crown and either adjacent tooth. If that is the case than you probably should have the crown replaced.2. Do you smell any odor from any other teeth when you floss. If so it may just be a hygiene issue.3. X-rays don't always show decay but if the margins of the crown are sealed the crown may not need to be replaced.Without x-rays and an exam it's tough to provide additional information.