Is it OK for my crown to have a gap between the crown and my gum line? (Photo)

Food particles can get trapped between your crown and tooth, which may lead to decay, bad smell and pain. The crown should be removed, and if there is no decay in your tooth, a new crown that fits your tooth properly should be placed.

Thank you for sharing the photo and explaining the situation. Based on what you're describing, here are some considerations:
1- Crown Margins and Sensitivity:- If part of the natural tooth is visible at the gum line, it may indicate that the crown margins were not extended far enough, or gum recession has exposed part of the tooth structure. This can lead to sensitivity, especially if the exposed area is dentin (the layer beneath the enamel).- Poorly fitting crown margins can also trap bacteria, leading to irritation and sensitivity over time.
2.- Root Canal Recommendation:- A root canal is typically recommended if the tooth's nerve is inflamed or infected, which might cause pain or sensitivity that doesn't resolve.- However, if the sensitivity is primarily due to the exposed tooth structure near the crown, a root canal might not be the best or first solution. Addressing the exposed area and ensuring the crown fits correctly should be a priority before proceeding with a root canal.
3.- Possible Next Steps:- Seek a Second Opinion: Since you're unsure about the crown, it’s reasonable to get a second opinion from another dentist or prosthodontist. They can assess the crown fit, margin, and whether it adequately covers the tooth.- Desensitizing Treatments: If the issue is the exposed dentin, a dentist might recommend a desensitizing treatment, such as fluoride varnish or bonding a protective layer over the sensitive area.- Crown Replacement: If the crown is not fitting properly or the margins are inadequate, replacing the crown may be necessary.
4.- Temporary Relief for Sensitivity:- Use a toothpaste designed for sensitive teeth (e.g., Sensodyne) to help reduce discomfort.- Avoid very hot, cold, or acidic foods and drinks, which can worsen sensitivity.
If you’re still concerned, visiting a prosthodontist (a specialist in crowns, bridges, and implants) might give you more clarity and confidence in the next steps.
Dr. Miller Vieira Paula