Abstract: A protection assembly for a syringe, in dentistry in particular, that includes a syringe body, with the protection assembly being of the disposable type and including: a canula (10) in an elastically rigid material, including a base that is intended (16) to be fixed onto the syringe body, and a sheath (12) in a flexible material formed of two parallel plane walls (18A, 18B) intended to loosely cover the syringe body, the sheath being fixed onto the canula close to the base, and the fixation being of the irreversible type.