Why Are My Teeth Shifting After Getting a Dental Crown?

After getting dentures, the adjacent three teeth have slightly tilted and protruded outward?

During the root canal treatment of the right second premolar, a temporary crown was placed for about three months, and there were no issues at that time.
However, after the crown was placed, it was noticed that this tooth was slightly elevated compared to the others when biting down, and dental floss frequently broke when cleaning the contact point with the second molar (the first molar is missing).
About a month later, it was suddenly observed that the canine was tilting forward, and the lateral incisors and central incisors were protruding outward.
Now, approximately six months later, the contact point between the second premolar and the second molar feels slightly loose, allowing dental floss to easily pass through.
However, the canine has tilted forward by about 10 degrees, and the protrusion of the lateral incisors and central incisors has become more pronounced.
Could you please explain the reasons for this and how to improve the situation?

karen, 40~49 year old female. Ask Date: 2019/03/14

Dr. Huang Tingfang reply Dentistry

Dear Ms.
Karen,
Hello! As mentioned, your teeth have shifted! There may be periodontal disease.
Please return to the dentist for an examination.
Make sure to communicate with your doctor.
Thank you! Wishing you safety!
Sincerely,
Dr.
Huang Ting-Fang, Dentistry

Reply Date: 2019/03/14

More Info

The shifting of teeth after getting a dental crown can be a concerning issue, and it is essential to understand the underlying reasons and potential solutions. Based on your description, it seems that the dental crown placement may have altered your bite and the alignment of your teeth, leading to the shifting of adjacent teeth.

Possible Reasons for Teeth Shifting
1. Improper Bite Alignment: When a dental crown is placed, it is crucial that the bite is properly adjusted. If the crown is too high or not aligned correctly with the opposing teeth, it can create an uneven distribution of forces when biting or chewing. This misalignment can cause adjacent teeth to shift as they compensate for the altered bite.

2. Loss of Support: If the dental crown was placed on a tooth that previously had significant structural integrity, any loss of support from that tooth can lead to shifting. For example, if the tooth was root-canaled and then crowned, the surrounding teeth may begin to shift if they are not adequately supported.

3. Changes in Occlusion: The way your teeth come together (occlusion) can change after a crown is placed. If the crown affects how your teeth fit together, it can lead to changes in the position of your teeth over time. This is particularly true if the crown is not properly contoured to match the natural shape of your teeth.

4. Periodontal Issues: If there are underlying periodontal (gum) issues, such as gum disease, this can also contribute to tooth mobility and shifting. Healthy gums are essential for maintaining tooth stability, and any inflammation or infection can lead to bone loss and tooth movement.

5. Temporary Crown Effects: If you had a temporary crown before the permanent one, it might not have provided the same level of support or occlusal stability, leading to shifting during the transitional period.

Recommendations for Improvement
1. Consult Your Dentist: The first step is to return to your dentist for a thorough evaluation. They should assess the fit of the crown, the alignment of your bite, and the health of your gums. It may be necessary to make adjustments to the crown or perform additional treatments to restore proper alignment.

2. Orthodontic Evaluation: If the shifting is significant, an orthodontic evaluation may be warranted. An orthodontist can assess the alignment of your teeth and recommend treatments such as braces or clear aligners to correct the shifting.

3. Periodontal Care: Ensure that your gums are healthy. If there are signs of gum disease, seek treatment from a periodontist. Healthy gums are crucial for maintaining tooth stability.

4. Regular Follow-ups: After any adjustments or treatments, regular follow-ups with your dentist are essential to monitor the situation and ensure that your teeth remain stable.

5. Maintain Good Oral Hygiene: Continue to practice good oral hygiene, including brushing twice a day and flossing daily. This will help prevent any further issues with gum health and tooth stability.

Conclusion
Teeth shifting after getting a dental crown can be attributed to several factors, including improper bite alignment, loss of support, changes in occlusion, and periodontal issues. It is crucial to consult with your dentist to evaluate the situation and determine the best course of action. With appropriate adjustments and care, it is possible to restore proper alignment and prevent further shifting of your teeth.

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