Which of the following is not true regarding the modified pen grasp?

The grasp that permits the greatest control of the instrument, while simultaneously maintaining ergonomic positioning of the wrist and elbow, is the modified pen grasp. Pads of the thumb and of the index and middle fingers contact the instrument, while the tip of the ring finger (or tips of the ring and little fingers) is placed on a nearby tooth surface of the same arch as a rest. The palm of the hand generally is facing away from the operator. Pad of the middle finger is placed near the topside of the instrument; by this finger working with the wrist and the forearm, cutting or cleaving pressure is applied through the blade to the area requiring modification. The instrument should cross over the proximal phalange of the index finger and should not cross over at the junction area of the thumb and index finger as in the conventional pen grasp.