What happens if you get decay under a crown?

If you get decay under a crown issues may occur that affect your oral health. Issues such as bad breath and sore gums may develop or the decay may extend deeper into the tooth, causing dental infection and may even mean the tooth cannot be saved!

Tooth decay under a crown may be caused by bad oral hygiene. By neglecting good oral hygiene methods, such as brushing and flossing your teeth, you may put yourself at risk of developing decay. For this reason, it is important to have your teeth regularly monitored and cleaned by your dentist.

Tooth decay might be caused when plaque is trapped underneath your crown or in the cracks of your teeth. This plaque is easily removed with regular brushing and flossing. If plaque is not removed from these areas, the decay process starts.

Our team has described what may be causing discomfort underneath your crown and how you might be able to treat it.

What causes tooth pain under a crown?

If you are experiencing pain under a crown, this could be caused by several things which include:


Some signs of infection under your crown may include:

  • Pain when biting
  • Swelling of your gums
  • Tooth sensitivity

Infections are not pleasant to experience and you should address the affected area as soon as you start to develop any early signs.

Post crown procedure

If you have recently had a crown placed upon your tooth, you may still feel some discomfort or tenderness following your procedure.

If the pain persists longer than your dentist’s recommended recovery period, you should contact your dentist or a health professional to assess your condition.

Tooth decay

Developing a cavity underneath your crown may cause you to experience pain within your tooth. If left untreated, it may spread throughout your remaining tooth structure.

Decay stems from the food that is left within your mouth after eating, which the bacteria living in your mouth thrives on. The bad bacteria which consumes the sugary products you might eat develops an acid which can damage your enamel. Therefore, causing holes within your teeth which is identified as tooth decay.

What treatments can be done to remove cavities?

There are several methods our dentist might use to remove cavities. These include:

Dental filling

Dental fillings are a treatment which involves removing the cavity within your tooth and filling the hole within your tooth with composite resin.

This aims to restore your tooth’s strength when the decay has passed through your tooth’s enamel.

Crown replacement

You may need to have your crown removed and replaced to treat the decay under your tooth. Depending on the size of the decay your new crown may need to be made to cover a larger area.

At Coastal Dental Care, we offer Same-Day Crowns using our CEREC technology. CEREC technology allows us to create your dental crown within our practice on the same day. Meaning, you may not have to book in for a second appointment or wear a temporary crown.

Tooth extraction

For more severe cases, you may have to have your tooth removed if the decay has spread throughout your tooth and is beyond saving.

What happens when a cavity is left untreated?

If a cavity or tooth decay is left untreated you may begin to experience some noticeable effects. Furthermore, your dentist may advise you to undergo further treatment.

Some effects may include:

Bad breath

In some cases, cavities may provide you with bad breath. When leftover or trapped food gets caught within your teeth you may begin to develop plaque. Therefore, bacteria beings to thrive and cause decay.

If decay under your crowns begins to spread or thrive, you may experience some bad breath.

Decay within your root canal

If a cavity spreads within the root of your tooth, you may be at risk of developing issues that may affect your daily routine.

Research suggests that if decay within your root canal is left untreated you may experience:

  • Pain
  • Discomfort
  • Infection
  • Tooth loss

Furthermore, the effects of decay within your root might also affect the way you eat and limit the types of foods you can consume.

In addition, if the decay reaches the roots within your tooth structure, you may require root canal therapy.

Tooth decay treatments at Coastal Dental Care

From a dentist perspective, if you are experiencing any pain or discomfort within your mouth you should visit your dentist. This way your dentist can assess your oral health and provide you with a solution to resolve the issue.

At Coastal Dental Care, we recommend you attend regular check-ups with your dentist every 6 months. Furthermore, you should continue to practice good oral hygiene each day by brushing your teeth twice a day and flossing once a day.

By maintaining good oral hygiene, you can help to reduce the risk of developing oral issues such as tooth decay.

If you would like to book in for an appointment you can do so by contacting on of our friendly practices today. Alternatively, you can book an appointment online 24/7.