A dental tool which combines a rubber tip gum massager with a floss threader that aids in positioning floss under fixed bridges. The tool is especially useful in cleaning under bridge work that is in the back of the mouth. It is common practice to employ floss with a few inches of rigid line attached to the actual floss material so that the rigid line can be pushed under the bridge work with the fingers and then pulled through to position the actual flossing material for the back and forth cleaning process. Even with the rigid line threader, however, the process is sometimes difficult for a dental professional and almost impossible for an individual because it is hard to feel when the threader is in the right position. A common rubber tip gum messenger on a handle can easily find the right spot for the threader because of the tactical feed back as the rubber tip is passed over the teeth and gums. The present invention uses a hole that passes through the handle of the rubber tip tool and on through the end of the rubber tip itself. The rigid floss threader line is inserted into the hole in the handle and pushed all the way to the end of the rubber tip, ready to be advanced under the bridge as soon as the rubber tip feels the right spot. An important feature of the tool is that the hole in the handle is positioned opposite of the direction of the rubber tip, so that the hand holding the handle is on the other side of the teeth from the hand pushing the threader.