For sensitive teeth & gums you should avoid commercial and toxic toothpastes, use a very soft toothbrush, brush very gently always using a motion that starts above your gum line and moves down to the tip of your tooth, and most of all massage your gums with your fingertips – with clean fingers massage the gums with a gentle motion that starts above the gumline and massaged down over the tooth. You can read more about healthy teeth tips here –>