. Dental hold it a few mo-ments in fuming sulphuric acid; the cotton will be destroyedalmost immediately; then hold the broach a second or two insoda water. A SUGGESTION REGARDING DISKS. By A. W. Jamison, D. D. S., Toledo, Ohio. Instead of discarding a paper disk after once using, hold asharp-pointed instrument to the back of disk while revolvingrapidly. You can instantly cut off a section of the outside,giving you a practically new disk. METHOD OF SWAGING INLAY N. W. Hiatt, D. D. S., Marion, Indiana. I take my impression with gutta-percha base-plate. Thisimpression is imbe
. Dental hold it a few mo-ments in fuming sulphuric acid; the cotton will be destroyedalmost immediately; then hold the broach a second or two insoda water. A SUGGESTION REGARDING DISKS. By A. W. Jamison, D. D. S., Toledo, Ohio. Instead of discarding a paper disk after once using, hold asharp-pointed instrument to the back of disk while revolvingrapidly. You can instantly cut off a section of the outside,giving you a practically new disk. METHOD OF SWAGING INLAY N. W. Hiatt, D. D. S., Marion, Indiana. I take my impression with gutta-percha base-plate. Thisimpression is imbedded into the Melottes Moldine. The im-pression is then oiled with any thin oil, and \ usually blow theimpression after oiling to insure that no great amount has ac-cumulated in any of the deeper parts, thus preventing themetal from flowing in. A rin<^ is placed over this impressionand the S. S. White inlay metal is flowed into it. I contend that the gutta-percha takes a more accurate im-pression than REPAIRING A JACKET CROWN. I>r. Capon. The repair most likely to be needed is re-attaching a ve-neer. This, if not well attached, generally comes free from themetal, but if the metal tears away with it a new crown mustbe made. If the framework is intact and firm in place, loosenall the free edges with a thin, sharp, flat instrument, gettingout the cement as much as possible, and then use an old scal-ing instrument as a hook at the neck, and in many cases theirame will come away, and with a little straightening be asgood as ever. Sometimes a pair of pincers, nipping the freepoint of the platinum will draw it off when other means removed, clean all the cement out of it and put under theblowpipe, making it clean for new porcelain. If the same veneeris used, all of the old porcelain should be ground away and themetal framework be put in front of the furnace for a few min-utes to burn out any impurities; then proceed as if the crownwere new. The time usually
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