. The Dental cosmos. Another section of the same root. The stainhas passed in this, as also in the foregoingspecimen, through the canals of the cementinto the pericementum; the coloring is notdemonstrable in a photograph, however. Fig. Syringe cemented to tooth. The cement iaallowed to overlap the root, which has beengrooved with a stone at a. relationship existing between the pulp andthe cementum are thus clearly demon- BAKER.—A REPLY TO DR. WILLIAM BEBB. 663 strated. These communicating channelsexplain, in my opinion, the sensationsometimes experienced by the patientwhile a drill is bein


. The Dental cosmos. Another section of the same root. The stainhas passed in this, as also in the foregoingspecimen, through the canals of the cementinto the pericementum; the coloring is notdemonstrable in a photograph, however. Fig. Syringe cemented to tooth. The cement iaallowed to overlap the root, which has beengrooved with a stone at a. relationship existing between the pulp andthe cementum are thus clearly demon- BAKER.—A REPLY TO DR. WILLIAM BEBB. 663 strated. These communicating channelsexplain, in my opinion, the sensationsometimes experienced by the patientwhile a drill is being used in dead roots,also the relative immunity of deadroots to the agents producing appears to me that these experi- ments and observations are destined todispel all doubts concerning the in-terprismatic substance as well as themetabolism present in the enamel, andcannot fail to modify our views concern-ing the factors influencing caries andimmunity to caries. A REPLY TO DK. WILLIAM BEBB.* By LAWRENCE W. BAKER, , Boston, Mass. IN the February 1912 issue of this jour-nal, Dr. William Bebb of Los AngelesCal., criticized my article, A Prelim-inary Study of the Influence of theForces of Occlusion on the Developmentof


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentist, bookyear1912