Principles and practice of operative dentistry . Fig. 270.—Section of human molar, showing caries of enamel following a fissure. X 95. Caries follow-ing crack inenamel Dentinal tuluili ? *1.! || Sentering the W I -nainel • M MWI (I. Fig. 271.—Caries following crack in enamel. X .5. DENTAL CARIES. 133 means, and thus the active agencies of caries are furnished with the bestpossible conditions for the establishment of their destructive work. Injuries, extractions, or the necessary loss of a tooth often cause mal-position of adjoining teeth, and render the approximal surfaces more diffi-cult to b
Principles and practice of operative dentistry . Fig. 270.—Section of human molar, showing caries of enamel following a fissure. X 95. Caries follow-ing crack inenamel Dentinal tuluili ? *1.! || Sentering the W I -nainel • M MWI (I. Fig. 271.—Caries following crack in enamel. X .5. DENTAL CARIES. 133 means, and thus the active agencies of caries are furnished with the bestpossible conditions for the establishment of their destructive work. Injuries, extractions, or the necessary loss of a tooth often cause mal-position of adjoining teeth, and render the approximal surfaces more diffi-cult to be cleansed by the natural agencies of the mouth, and by that muchestablish a greater predisposition to caries. The injudicious use of thefile is also a predisposing cause of caries, and secondary caries is ofteninvited by failure to restore the normal contour of the teeth when insertingapproximal fillings. Broad contacts upon the approximating surfaces ofthe teeth are grave deviations from the normal condition of a perfectdental arch, and should never be allowed to obtain as the result of opera-tion, as all such conditions invite a recurrence of the disease. Abnormal Oral Secretions.—Normal mixed saliva is generally alka
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901
