What if one of a crown front teeth keep falling out or coming loose?

Hi Jeff,There "could" be many reasons for this. What does your dentist say the reason is?I would not be able to answer the specific reason why your crown keeps coming off, but here are some possibilities:1. The tooth underneath is very short, short or small teeth don't have much "retention" and come off much easier than larger teeth.2. The crown doesn't fit well, and so the cement underneath washes out. The tighter and more accurate the fit, the less likely the crown will come off.3. The tooth wasn't prepared in a way to maximize the retentive aspects. This could be because there wasn't adequate tooth, large areas of decay, or dentist error.4. A patient who is a "grinder" or "bruxer" will put more forces on their teeth, and more likely to loosen a crown.5. The dental cement might not have been mixed properly.6. You could be eating sticky food that could dislodge the crown while eating.There are "other possibilities", but suggest to having a heart to heart talk with your dentist and let him explain what the problem is. If there isn't adequate tooth structure, then you might gain more retention by doing a root canal, post and core. Another solution is crown lengthening gum procedure that will give the crown more tooth to adhere to. If the crown is loose on the tooth, then replacing it with a well fitting new crown may solve the problem. If you are a grinder, bruxer, then you may always have more problems with your teeth than patients who don't have those habits.Good luck Jeff,Dr. Norm Huefner

With limited info, this is a bit of a guessing game. There are many possibilities, including an imbalanced bite, cement breakdown, cemented instead of bonded, material choice, short tooth, broken root and so on.... Photos and xrays would help out.The definition of insanity is doing the same thing over and expecting a different result. Not sure if this applies here, but changing the game may be needed.