Playful:,   Facilitates the dentists work during anesthesia application, Encouraging:, It may be given to the patient as a gracious gift, Sterilizable, : Guarantee of Biosafety, Mouth opening, : Allows the passage of the needle with its cover, Reduced length of the mouth opening: Use of conventional and extra-short needles , INSIDE LEAD, : Straight passage of needle when inserted without cover