You see 3 pieces to this toothbrush concept; a head, a body, and a heart. Imagine the transparent heart to be a softer material than the white plastic. When static, the head is fastened loosely and can be replaced, or its sharp end may be used to pick a tooth. When holding the brush and compressing the heart, the head is locked in place and the brush can be used.
The form and mechanics of this toothbrush concept were inspired by the bird, and the hollow bones that it developed to fly.