Does nickel-titanium alloy have an effect on human body?

At present, from a medical point of view, nickel-titanium alloy is beneficial to human health and should not cause harm to human health.

Nickel-titanium shape memory alloy has a special chemical composition, that is, it is an atomic alloy of nickel and titanium, containing about 50% nickel, and nickel is known to have carcinogenic and cancer-promoting effects. Generally speaking, the oxidation of titanium on the surface layer acts as a barrier, which makes NiTi alloy have good biocompatibility. TiXOy and TixNiOy in the surface layer can inhibit the release of Ni. The greater the vibration caused by mastication and bruxism to the arch wire, the greater the damage to the root and periodontal tissue. The experimental results of different arch wire attenuation show that the amplitude of stainless steel wire is larger than that of superelastic NiTi wire, and the initial amplitude of superelastic NiTi arch wire is only half that of stainless steel wire. Good vibration and shock absorption characteristics of arch wires are very important for tooth health, while traditional arch wires, such as stainless steel wires, often increase root absorption.