Restorative materials, in the context of medical treatment, are typically not drugs in the traditional sense. They include fillings, crowns, bridges, implants, and other dental or orthopedic devices. Information about their safety and efficacy for a 25-year-old male weighing 70kg cannot be provided without knowing the specific material and intended use. Such information is usually found in product inserts for dental materials, or surgical guidelines for implant procedures. Please specify the restorative material to receive relevant information.