. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 172.—Flaggs gutta-percha and tool Fig. 173.—Thermoscopic heater for gutta-percha. CLASSIFICATION OF CEMENTS T27 2. In cavities of easy access, heat the Gutta-percha and,while soft, mold into a mass of sufficient size to fill the cavity,packing with a warm burnisher, condensing thoroughly againstthe walls, and trimming the excess after either of the abovemethods. Then go over the surface of the filling with a pledgetof cotton or spunk, moistened with chloroform. For illustra-
. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 172.—Flaggs gutta-percha and tool Fig. 173.—Thermoscopic heater for gutta-percha. CLASSIFICATION OF CEMENTS T27 2. In cavities of easy access, heat the Gutta-percha and,while soft, mold into a mass of sufficient size to fill the cavity,packing with a warm burnisher, condensing thoroughly againstthe walls, and trimming the excess after either of the abovemethods. Then go over the surface of the filling with a pledgetof cotton or spunk, moistened with chloroform. For illustra-tions of burnishers see Figs. 94 and Exercises. Fill several of the cavities, prepared during the study ofcavity preparation, using both methods as outlined above. CEMENT There are four varieties of cements used in dentistry, eachreceiving a name depending on its chemical consist of a powder and a liquid, which when mixedtogether, form a more or less hard mass. The composition ofthese is largely a trade secret, but for all practical purposes itis as follows: Classification of Cements I. Oxyphosphate of Zinc / Powd
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