In performing this part of the work never cut a thread in the cementum. If the shouldered spear-pointed drill is nicely gauged to the wire, like the S. S. White retaining screw-set, the wire will cut its own way in.
When the filling proper is completed, dress off the wire pins as though they were fillings.
Discussion—Dr. J. T. Taft:—The Palmer clamps have been a source of pleasure in my hands. They fit each tooth so nicely that great stiffness is not required.
Dr. H. A. Smith:—If a chisel is rested against the cementum and lightly tapped, the assistant can easily hold it. Bleeding gums cause much time to be lost.
Dr. F. Sage:—Sharpen the large end of a steel pen and drive it in the cementum. This has the general form of the festoon of the gum.
Dr. M. H. Fletcher:—Spunk and dry plaster of paris used when the rubber leaks, takes up moisture and sets, adhering to the teeth and rubber.
Dr. Chas. Miles:—Thrust a heated instrument through the rubber and it will adhere.
Dr. J. R. Callahan:—The How clamp is a good appliance for this class of cavities.
Dr. C. A. Butler closed by saying there was no cut in the cementum by using the screws. They are dressed like gold fillings.
Dr. J. R. Callahan, Cincinnati, O., Paper on "Hypnotism."