Hello, about the dental use of equipment because it is a dental more professional issues, for which I am not too clear, but medical sterilization health standards have been clearly defined into the tissues, vascular system, or aseptic body fluids flow through the instrument, should be sterile, at this point this instrument is not a general disinfection can satisfy the requirements, but the need for other equipment to carry out aseptic treatment to ensure that no microorganisms exist on it. any microorganisms present. The use of sterile instruments will not lead to HIV transmission through medical devices, and the needles you mentioned belong to this category.
So I personally think that the equipment, at least the part that goes into the tissues, must have been replaced with new, sterilized equipment at the time of your visit, which is now a very important aspect of medical care, and which would otherwise lead to transmission of infectious diseases through bodily fluids.