E-C clamp technique

The hand is positioned so that the little, ring, and middle fingers are spread over the mandible from the angle of the jaw forward towards the chin in the configuration of the letter "E". The jaw is then lifted, pulling the face into the mask. The thumb and forefinger are placed over the mask in the shape of the letter "C". The mask is squeezed onto the face and a seal is formed between the mask and the face.