Can Dental Fillings Increase the Height of a Tooth for Crowns?

Can molars be restored to increase their height?

Hello Doctor: My husband is experiencing discomfort with his lower left molar while eating.
He visited a dental clinic, and the dentist recommended a crown.
The dentist mentioned that one side of the molar is very short and close to the gum line, so they need to grind down the longer, more protruding side significantly, and also flatten the middle of the tooth.
I would like to ask a question: Since one side of the molar is already very low and close to the gum line, if they grind down the more protruding side a lot, will the entire molar end up being too low and close to the gum line? Will it still be possible to place a crown on it? Can the lower side be built up using dental filling to increase the height of the entire molar? Wouldn't that make it easier for the crown to fit securely? Thank you for your clarification.

Ms. Shao, 40~49 year old female. Ask Date: 2016/04/25

Dr. Zeng Guanghui reply Dentistry

One side of the molar is significantly worn down and close to the gum line, indicating severe occlusal wear.
Although the other side is high, it cannot be repaired using fillings, which is why a crown is being considered.
Before placing the crown, the surrounding teeth and occlusal surface need to be prepared, and ideally, the height of the tooth after preparation should be at least 4mm.
It is recommended to consult with a dentist for a detailed evaluation and treatment plan.

Reply Date: 2016/04/25

More Info

When it comes to dental crowns and the height of teeth, it's essential to understand the principles of dental restoration and the specific requirements for fitting a crown properly. In your case, it seems that your husband's lower left molar has uneven wear, with one side being significantly shorter and closer to the gum line. This situation can complicate the fitting of a crown, as a proper crown requires a certain amount of tooth structure to ensure stability and longevity.

To address your question: Yes, dental fillings can be used to increase the height of a tooth, but there are limitations and considerations to keep in mind. If the tooth is significantly worn down, as in your husband's case, the dentist may consider using a filling material to build up the shorter side of the tooth before placing the crown. This process is often referred to as "core buildup." The goal is to create a more even surface that allows for a better fit of the crown.

However, there are several factors to consider:
1. Material Selection: The type of filling material used is crucial. Dental composite resins are commonly used for such procedures because they can be shaped and polished to match the natural contours of the tooth. However, if the tooth is severely compromised, the dentist may recommend a more robust material or even a post-and-core buildup, which involves placing a metal post inside the tooth to provide additional support.

2. Structural Integrity: The dentist will assess the overall health of the tooth. If the tooth structure is too compromised, simply adding filling material may not provide the necessary support for a crown. In such cases, the dentist may suggest other restorative options, such as a root canal treatment followed by a crown.

3. Crown Preparation: When preparing a tooth for a crown, the dentist typically reduces the height of the tooth to create a uniform surface for the crown to fit securely. If the tooth is built up too much with filling material, it may affect the bite and lead to discomfort or further dental issues down the line.

4. Bite Alignment: After any adjustments, it's crucial to ensure that the bite is properly aligned. An uneven bite can lead to excessive wear on the crown or adjacent teeth, discomfort, and even temporomandibular joint (TMJ) issues.

5. Long-term Considerations: While filling material can temporarily increase the height of the tooth, it may not be a permanent solution. Over time, fillings can wear down, chip, or become discolored, necessitating further dental work.

In conclusion, while it is possible to use dental fillings to increase the height of a tooth in preparation for a crown, it is essential to have a thorough evaluation by a qualified dentist. They will consider the structural integrity of the tooth, the type of filling material, and the overall treatment plan to ensure the best outcome. If your husband's tooth is significantly compromised, the dentist may recommend additional treatments to ensure a successful crown placement. Always consult with a dental professional to discuss the best options tailored to individual needs and circumstances.

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