As far as proper alignment and number of teeth and molars are concerned, the standard way of chewing and eating food needs all of them munching the right way. When one or a couple of your teeth are misaligned, chances are you will have deformed teeth.
Normally, people would improvise or forego fixing their teeth for one reason or another. But the fact remains you will eventually be forced to turn to dentures to make sure everything is corrected. This is something we commonly see in elders today. So if you are still young, it would be best to take care of your teeth and have your specialist take care of them as well.