Indications: local dental anesthesia by nerve block or infiltration. Lingospan when used for infiltration will have an average onset time of less than two minutes and a duration of about 60 minutes. When used for nerve blocks the average onset time is 2 to 4 minutes and will provide about 90 minutes of pulpal anesthesia. No-methlyparaben formulation to avoid allergic reactions on sensitive patients. 100% latex free components to help reduce allergic responses. Terminal sterilization of product/cartridges for safe use. Mylar label covered glass cartridges to minimize risk of wound in the event of a cartridge break.