Clear aligners vs. braces: which is safer for your health?

This study looked at whether clear aligners (like Invisalign) release chemicals called bisphenol A (BPA) into saliva, which can affect hormones. Researchers compared three groups: aligners made by an orthodontist, standard aligners, and traditional braces. They measured BPA levels in 52 teenagers and young adults, and also checked how well each treatment worked. The goal is to help patients and doctors choose the safest option.