what are needle-less syringes used in dentistry?

Question

syringes are used in dentistry to administer anasthetic drugs. however usually allthese syringes have needles attached toinject.

Answer 1

Needleless syringes or injectors used in dentistry are specially designed syringes to administer anesthetics drugs which shoot a pinpoint jet of fluid through the skin at high speed. The use of this is in controversy and on further researches for the meantime but some continue to use this.