Why Does it Smell Bad Under My Dental Crown?

Why Does it Smell Bad Under My Dental Crown?

April 1, 2024

As you go about your day, you may suddenly notice an unpleasant odor emanating from your mouth. Upon closer inspection, you realize that the source of the smell seems to be underneath one of your dental crowns. You might wonder: why does my dental crown smell? This guide will explore the potential reasons behind this phenomenon and discuss what you can do about it. At Okemos Smile Center, we recognize the importance of promptly addressing your concerns and providing you with the information necessary to uphold optimal oral health.

What Causes a Bad Smell to Develop Under a Dental Crown?

  • Bacterial Growth: The warm and moist environment beneath a dental crown can create an ideal breeding ground for bacteria. These bacteria can proliferate and produce foul-smelling gases, creating an unpleasant odor.
  • Food Debris: Food particles trapped between the crown and the natural tooth can decompose over time, releasing malodorous compounds.
  • Inadequate Oral Hygiene: Poor brushing and flossing habits can contribute to plaque buildup around the crown margins, providing a substrate for bacterial growth and odor formation.

How Can Poor Dental Hygiene Affect the Health of a Dental Crown?

  • Plaque and Tartar Accumulation: Without regular and thorough oral hygiene practices, plaque and tartar can collect around the margins of the crown. This buildup can harbor bacteria and contribute to the development of an unpleasant odor.
  • Gum Disease: Gum disease like the gingivitis or periodontitis, can cause inflammation and infection around the base of the crown. This can cause gum recession, bone loss, and the formation of periodontal pockets, all of which can contribute to an unpleasant smell.

Can an Ill-Fitting Crown Lead to Odor and Dental Issues?

  • Gap Formation: If a dental crown does not fit properly or becomes loose over time, it can create spaces between the crown and the natural tooth. These gaps can trap food debris and bacteria, leading to odor formation and potential dental issues.
  • Leakage: A poorly fitting crown or one that has deteriorated over time can allow saliva, food particles, and bacteria to seep underneath it. This can result in decay, infection, and an unpleasant odor.

If you’re experiencing issues with your dental crown, it’s essential to consult with a dentist in Okemos who specializes in restorative dentistry for proper evaluation and treatment.

What are the Signs of Infection Under a Dental Crown?

  • Persistent Bad Breath: Chronic bad breath that does not improve with regular oral hygiene practices may indicate an underlying infection beneath teeth caps.
  • Gum Inflammation: Redness, swelling, and tenderness around the gum line adjacent to the dental crown can be signs of infection or irritation.

How Do Dentists Diagnose and Treat Odors Coming from Under a Crown?

  • Clinical Examination: dentists will thoroughly examine the affected tooth as well as surrounding tissues to assess the extent of the problem. This may include checking for signs of decay, infection, or inflammation.
  • X-ray Imaging: X-rays may be taken to visualize the underlying structures, such as the tooth roots and bone, and to identify any issues that may not be visible during a clinical examination.
  • Treatment Options: Treatment for odor coming from under a dental crown will depend on the underlying cause. Options may include professional cleaning, crown replacement, root canal therapy, or periodontal treatment.


Experiencing a bad smell under your dental crown can be concerning, but addressing the issue promptly is essential to prevent further complications. By understanding the potential reasons and seeking professional dental care, such as dental crowns near you, you can take active steps to maintain the health and integrity of your dental crown. We’re here to support your journey to a healthy, beautiful smile.

Contact Us for a Thorough Examination and Peace of Mind Today!

If you’re experiencing an unpleasant odor coming from under your dental crown, don’t ignore it. Contact Okemos Smile Center to schedule a comprehensive examination and evaluation. Our seasoned dental team will work with you to pinpoint the underlying cause of the odor and suggest suitable treatment options to restore your oral health and confidence.

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