All-on-4 and All-on-6 implants are designed to be a permanent solution and are not removable by the patient. The implants themselves are surgically placed in the jawbone and become fused with the bone over time. The prosthetic teeth attached to the implants are typically screwed in place and can only be removed by a dentist for maintenance or replacement. This permanence is one of the key benefits of All-on-4/6 implants, providing stability and function similar to natural teeth.