What is the best solution to crowded teeth? i think my teeth are pretty straight and normal, but they are so crowded in the back that i find it almost impossible to floss and end up with a lot of cavities. is there anything i can have done to make my rear

It : It is hard to say without seeing you, but do you have 3rd molars? Are they impacted? If the answer is yes, it may help to get them removed. Do you have fillings or crowns on your back teeth? You might be able to get these restorations recontoured to make it easier to floss. Your dentist may consider "lightening" the contact even on natural teeth.

Sometimes : Sometimes older fillings or crowns or even decay can present a floss tearing situation. If all has been checked and the areas between your teeth are smooth it is possible to lighten the cotacts to allow for easier flossing. If there is truly a crowding situation then orthodontic movement would be necessary. Be sure to try a waxed floss.

Have a dentist check: Have your dentist check your bite and contact between your teeth. The contacts should be tight to prevent food impaction and subsequent periodontal disease. You might need to try an alternative flossing method like "flossups".

Mesial drift: Back teeth want to drift forward (mesial drift), making it hard to floss between back teeth. Talk to your dentist about reshaping contact areas, using floss threaders, water pik, air flosser, proxibrush, and so many other options. I'm sure he as good recommendations for your individual problem.