Can a clear type of retainer cause craze lines on teeth, if you are grinding on it too hard?i place dental wax on the spots wear i am grinding the most

See your dentist: If you want an accurate answer to your question, you will have to see a dentist. Since we can't actually examine you, nor see exactly what you are referring to, we can't be expected to properly answer your question. Since you don't wear the retainer all the time, the problem might arise when you aren't using it. Rather than knowing if it could be problematic, see a dentist to find out for sure.

Generally Not: Retainers are not designed to create this type of problem. If you are having craze lines, you need to have the dentist determine what additional problem you are having that would cause this type of damage..

No: Talk to your orthodontist and have them aware of these issues. You may have under lying TMJ issues and have him/her address that before they are finished with your braces.

No: Other things may cause the lines on your teeth, but not the plastic retainer.

Ask your dentist: A clear retainer will not cause craze lines on teeth, but excessive grinding and /or clenching can produce adverse loads on teeth that can result in damage to the teeth. You may need an oral orthotic to wear at night or in times of stress to mitigate these forces and protect your teeth. Ask your dentist for his opinion.