If you have noticed that your tooth appears black under a crown, you are not alone. Many patients worry when a dental crown changes colour or when the tooth underneath darkens. This guide covers the causes, the next steps you should take, and how treatment at Southside Dental Care can protect your tooth and restore your smile.
What does it mean if the tooth under the crown looks dark?
When your tooth under the crown appears darker, the issue often relates to changes within the tooth or around the crown. A dental crown covers the outer tooth structure, but it does not stop problems from developing beneath the crown.
Sometimes the crown and the tooth underneath can change colour due to ageing materials, staining, or early decay. If your tooth appears black, it is important to identify the root cause before the condition worsens.
Can decay cause a black tooth under the crown?
One of the main reasons for a black tooth under a crown is decay. When a crown doesn’t seal fully, bacteria can get in and harm the tooth beneath it.
This type of tooth decay can weaken the tooth structure and damage the enamel. If untreated, the decay can spread and may lead to an infected tooth or even crown fall.
Is a root canal linked to a tooth turning black?
A tooth turned black after a root canal is usually linked to changes within the tooth. The dentist removes the pulp during a root canal, and the tooth loses its blood supply as a result.
Without its blood supply, the tooth can darken over time. This often happens with a crown after a root canal, especially if the crown is older or made from less natural-looking materials.
Why do I see a black line near my dental crown?
A black line near your crown often shows up where it meets the gum, especially with older restorations that use metal bases.
This black line may not always mean decay, but it can affect the appearance of your natural teeth. Replacing the crown with a modern option can improve both appearance and fit.
Can staining or discolouration affect the tooth beneath?
Yes, stain and discolouration can affect both the crown and the tooth beneath. Food, drinks, and habits like smoking can cause the crown to darken.
In some cases, a black pigment can build up along the edge of the crown. This can make the tooth discoloured and give the impression of a blackened tooth.
What happens if the crown no longer fits properly?
If your crown no longer fits, bacteria can enter the gap and cause decay. This can lead to swelling around the crown, discomfort, or even throbbing pain.
A poorly fitted crown may also loosen, and in some cases, the crown has fallen off. At this stage, you should see a dentist quickly to prevent further damage.
Can a damaged or exposed tooth turn black?
A damaged tooth or exposed tooth can turn black if the inner structure becomes affected. Trauma, grinding, or wear can weaken the crown and the tooth.
If you grind your teeth or eat hard foods like hard candy, the crown may crack. This can expose the tooth underneath and increase the risk of decay and discolouration.
How do dentists treat a black tooth under a crown?
First, your dentist examines the tooth under the crown using X-rays and a thorough check. In many cases, they take off the crown to check for decay.
Treatment may include a dental filling, root canal treatment may be required, or replacing the crown with a new crown.
You can learn more about your options here.
Can you prevent tooth blackening under the crown?
Keep your crown and tooth healthy by brushing and flossing daily and attending regular dental check-ups to prevent decay and darkening.
Avoid habits that weaken your crown, such as chewing hard foods or grinding. Prevent tooth decay by keeping the area around the crown clean and monitored.
When should you visit your dentist in Glasgow?
See your dentist if you notice a dark tooth, pain, or discolouration. Treating decay early makes it easier to save the tooth.
At Southside Dental Care, we focus on addressing tooth issues early with modern dental care. Call us on 07743 020777 to book a consultation or discuss your concerns.
