Bad Taste and Sensation with Fixed Dental Crowns - Dentistry

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Fixed dentures


I have had a metal-ceramic fixed dental prosthesis for six months, and every time my tongue touches it, there is an unusual taste that feels numb and spicy.
I'm not sure what to do about it.
I brush my teeth after every meal, but the taste still persists.
Is this normal?

Yue, 60~69 year old female. Ask Date: 2024/04/29

Dr. Lin Jiayong reply Dentistry


Hello: If there is a noticeable foreign body sensation, it is advisable to consult a physician to take an X-ray to confirm whether the dentures are properly fitting.

Reply Date: 2024/04/29

More Info


Experiencing a bad taste and unusual sensations after getting fixed dental crowns, particularly metal-ceramic crowns, can be concerning. It's important to understand that while some discomfort or odd sensations can occur after dental procedures, persistent issues warrant further investigation.

Firstly, the bad taste you are experiencing could be attributed to several factors. One common reason is the accumulation of food particles and plaque around the crown, which can lead to bacterial growth and an unpleasant taste. Even with regular brushing, it’s possible that the areas around the crown are not being cleaned effectively. This is especially true if the crown is not properly sealed or if there are gaps between the crown and the natural tooth structure, allowing food debris to become trapped.

Another possibility is that the metal used in the crown could be reacting with certain foods or beverages, leading to a metallic taste. Some individuals are more sensitive to the materials used in dental work, and this can result in a tingling or burning sensation on the tongue or in the mouth. If you have a known allergy or sensitivity to certain metals, it’s crucial to discuss this with your dentist.

Additionally, the sensation of a "numb" or "tingly" feeling could be related to nerve irritation or inflammation in the surrounding gum tissue. This can occur if the crown is too high or if there is excessive pressure on the adjacent teeth. It’s essential to ensure that the bite is properly adjusted after the crown placement to prevent discomfort.

If you are consistently experiencing these symptoms, here are some steps you can take:
1. Maintain Oral Hygiene: Continue to brush your teeth at least twice a day and floss daily. Consider using an antibacterial mouthwash to help reduce bacteria in your mouth. Pay special attention to the area around the crown to ensure it is clean.

2. Dietary Adjustments: Avoid highly acidic or spicy foods that may exacerbate the metallic taste or irritation.
3. Consult Your Dentist: Since you have been experiencing these symptoms for six months, it’s advisable to return to your dentist for a thorough examination. They may need to check the fit of the crown, ensure there are no gaps, and assess for any signs of gum disease or other underlying issues.

4. Consider Material Sensitivity: If you suspect that the metal in your crown is causing the bad taste or tingling sensation, discuss the possibility of replacing it with a different material, such as a full ceramic crown, which may be more biocompatible and aesthetically pleasing.

5. Monitor Symptoms: Keep track of when the bad taste and sensations occur. If they worsen or if you develop additional symptoms such as swelling, pain, or bleeding, seek dental care promptly.

In conclusion, while some discomfort can be expected after dental work, persistent bad taste and unusual sensations should not be ignored. By maintaining good oral hygiene, consulting with your dentist, and possibly considering alternative materials, you can work towards resolving these issues. Your oral health is vital, and addressing these concerns early can help prevent more significant problems down the line.

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