Dental filling materials
Hello Doctor: My last tooth on the left side had a large cavity when I was a child.
The dentist treated it and filled it with a white material.
Now, the white filling is noticeably sunken, and the gum area around this tooth is very sensitive; it feels uncomfortable when pressure is applied.
Could you please explain why the white material has sunk? Should I schedule an appointment as soon as possible?
Miss Chen, 20~29 year old female. Ask Date: 2016/02/02
Dr. Huang Zhicheng reply Dentistry
Dear Ms.
Chen,
Hello, it seems that there is recurrent decay in the second layer of the tooth, known as dentin.
The filling above may have sunk due to this, creating a gap that allows stimuli to reach the dentin, resulting in sensitivity.
Wishing you peace and health.
Sincerely,
Dr.
Huang Chih-Cheng
Director of Dentistry, Taoyuan General Hospital, Ministry of Health and Welfare
Reply Date: 2016/02/02
More Info
When you notice that a dental filling appears sunken and your gums are sore, it is essential to understand the underlying reasons and the necessary steps to address the issue.
Firstly, dental fillings, particularly composite resin materials (the "white stuff" you mentioned), can sometimes become sunken or discolored over time due to several factors. These materials are designed to bond to the tooth structure, but they can wear down, shrink, or become compromised due to various reasons, including:
1. Wear and Tear: Over time, fillings can experience wear from chewing and grinding, especially if you have habits like bruxism (grinding your teeth). This wear can lead to a noticeable depression in the filling.
2. Moisture and Contamination: If the filling was not placed under ideal conditions, such as being contaminated with saliva or moisture, it may not bond properly to the tooth. This can lead to gaps or a sunken appearance.
3. Cavity Recurrence: If the tooth structure underneath the filling has developed new decay, it can cause the filling to appear sunken. This is particularly concerning if the decay is deep, as it can affect the tooth's integrity.
4. Material Properties: Composite materials can shrink slightly after curing, which may lead to a change in the filling's shape over time. Additionally, some materials may not withstand the forces of biting and chewing as well as others.
The soreness in your gums is another critical aspect to consider. Gum discomfort around a filling can indicate several issues:
1. Gingivitis or Periodontitis: If the gums are inflamed, it could be due to plaque buildup or gum disease. This inflammation can cause pain and discomfort when pressure is applied.
2. Filling Complications: If the filling is too high or not contoured properly, it can create pressure points that irritate the gums when biting down.
3. Infection: If there is decay beneath the filling or if the filling has become loose, bacteria can enter and cause an infection, leading to gum soreness.
Given these factors, it is advisable to see a dentist as soon as possible. A dental professional will conduct a thorough examination, which may include X-rays, to assess the condition of the filling and the underlying tooth structure. They can determine whether the filling needs to be replaced, if there is decay present, or if there are other underlying issues that need to be addressed.
In the meantime, here are a few tips to manage your discomfort:
- Maintain Oral Hygiene: Continue to brush and floss your teeth gently, especially around the affected area, to keep it clean and reduce inflammation.
- Avoid Hard Foods: Steer clear of hard or crunchy foods that may exacerbate the discomfort or put additional pressure on the filling.
- Over-the-Counter Pain Relief: If the discomfort is significant, consider using over-the-counter pain relievers, but consult your dentist for recommendations tailored to your situation.
In conclusion, the sunken appearance of your dental filling and the soreness in your gums warrant prompt attention from a dental professional. Early intervention can prevent further complications and ensure the health of your tooth and gums.
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