The best way is to protect your teeth, and the most effective way is to clean them on a regular basis. Also, get them treated from dentists on a regular basis. A dentist can also recommend a solution for a broken or damaged tooth, and if you get these treatments on a regular basis, your teeth can be protected and in the longer run.
If somehow your teeth are damaged quickly that you fear losing them completely, consult your dentist immediately. They can recommend you a number of solutions before the time comes for use of dentures. It can be that dentist offers bridging of your teeth as solution. Bridges are used in case of damaged teeth, but they are enough to be held together with the teeth which are not damaged through a bridge.
Crowning of teeth is another solution. Dentists can offer you crowning option with crowns made of different material, including steel. Make sure you make a choice that offers you a permanent solution to your dental problems for the rest of your life. Crowning can be sometimes very costly option, so keep that factor in mind as well. One-time investment on crowning can never be an expensive option though, and the protection you get for your teeth is more rewarding.
The dentist can also recommend you porcelain veneer as solution. This can be tried if you have lost all your teeth altogether. It is more complicated and more expensive as well, but one of the most effective alternatives to dentures solution. In this type of treatment, a rod is inserted in the gum area on the bone, and teeth are let grown on it. The treatment can take some time, but you can help yourself get rid of all the problems through this treatment.
At the end, if you have used all other solutions without any benefit, dentures is not a bad choice either, if they are done properly. If you are not comfortable with present dentures, you can consult another dentist or dermatologist. It is possible that the problem you have is not because of dentures but something else. So the dermatologist can recommend you a right solution.