Most people were never told their silver fillings contain mercury. Conventional dentistry normalized a material that most patients, given the choice, would rather not have in their mouth.
At a biologic dental practice, you get to make that call with full information. Restorations are made from materials researched for biocompatibility: BPA-free composite resins, ceramic inlays, and zirconia options that bond to your tooth structure without leaching chemicals into your system.
Beyond the material choice, the goal is always to remove as little healthy tooth structure as possible. Minimally invasive preparation, proper isolation, and a restoration that looks and functions like a natural tooth.