Abstract: A finger-mounted thumb-actuated compact dispenser for use by a dental assistant to enable light curable compositions to be shielded from undesirable ambient light until such time as they are to be applied. The dispenser mounts on a finger and has a lid that can be opened and closed by a thumb. The dispenser minimizes interference with the user's hand and thereby frees both hands for assisting the dentist. This technique enables the dentist to perform the bonding procedure quickly and efficiently requiring less chair time.