It's not normal for a tooth to hurt after a filling is placed. Unfortunately, it does occur on occasion. When this happens, there is almost certainly something that has caused the discomfort. We have to put on our detective hats and figure out the true cause of discomfort. There are many potential causes of tooth discomfort after a filling is placed. Here are a six potential reasons:
1. A "high" Filling
This just means that the bite is too high. In other words, there may be too much filling material that causes the opposing tooth to hit the filling prematurely. This causes excessive pressure on the tooth and can certainly cause discomfort. Usually, this is quite simple to diagnose. If the pain is elicited by biting into the filling, then it is likely that the filling is a little too high. You may also experience cold sensitivity on the tooth.
When a patient is numb, sometimes it is difficult to assess the bite. After the numbness wears off, it is much easier to assess the bite. If the bite feels funny after the numbness wears off, do not assume that you will get used to the bite. You won't. It will start to hurt and cause bigger issues. Fortunately, a high filling is easy to correct. All that is necessary is to grind the filling down slightly.
2. Uncured filling material
|A special light hardens the filling material.|
3. Trauma from the procedure
When any work is done to a tooth, it is a traumatic experience for the tooth. Sometimes the nerves inside the tooth get irritated. When this happens, the tooth becomes hypersensitive to cold. Again, you may wondering "hey, just like the previous two problems". Again, you are absolutely right. In this case though, there should not be any discomfort when biting. The good news is that this problem will usually correct itself within a few days. An anti-inflammatory medication such as Ibuprofen will reduce the inflammation within the tooth and will therefore also reduce any discomfort.
4. Exposed Root Surfaces
|Exposed root surfaces on multiple teeth.|
If you have exposed root surfaces that weren't cold sensitive prior to the filling being placed, but now are, then it is likely that the inflammation caused by the procedure on the tooth will make the tooth very sensitive to cold. Just like in the previous example, Ibuprofen can help. Even if medications aren't taken, this problem will usually resolve itself within a couple days.
5. Open Margins
If the margins are left open, then the tooth will develop decay again right at the interface between the tooth and restoration. It is imperative that the margins are completely sealed.
6. Cracked Tooth
In many cases, we often can't even see a fracture but know it is there. A good clue is that the tooth hurts only when biting a certain way. It doesn't always hurt when biting, but when the direction of the force is applied in such a way to spread the fracture, pain is elicited.
There are more reasons than these six, but these are the most common. If problems persist for more than a few days, have the tooth evaluated to determine what the problem is.
Dr. Cisneros maintains a practice in Freeburg and Columbia, IL. Both are in the Greater St Louis, MO area. For more information on a wide variety of subjects, please visit www.advanced-smiles.com.