How safe is the material that false teeth are made of to our bodies and to the fillings of our teeth?

Very safe: Unless there is some specific allergy to any of the materials used, it is extremely safe and nothing to be overly concerned about.

Flase teeth and fine: False teeth and fillings are safe for the body. All materials are approved for use. Should not pose a health risk at all.

Very: Has been in use for decades and very safe when used as directed, and checked as directed by your dentist, at least 2x a year.

Can be very safe: If you seek care from a reputable dentist I am sure there will be no issues with this as far as dental science currently understands. If a dentist utilizes a dental laboratory that uses substandard materials that may be an issue. I would ask the dentist about their materials and the dental laboratory materials. In many instances the lab provides a sticker that provides information on materials.