The Dental cosmos . , ap-plication of acids, alteration of the saliva,impressions of heat or cold, and also cer-tain kinds of nourishment. The ideas expressed by Fauchard arenot above modern criticism, neverthelesswe owe a great deal to him for having,once for all, put an end to the ridiculoustheory of dental worms, and for havingtried to find a reasonable explanation ofthe manner in which caries is produced. Of filling teeth. As to the treatment: When caries wasvery superficial he used the file (Fig. 3) ;when it was deeper he removed the decay,prepared the cavity, and after using oilof cinnam
The Dental cosmos . , ap-plication of acids, alteration of the saliva,impressions of heat or cold, and also cer-tain kinds of nourishment. The ideas expressed by Fauchard arenot above modern criticism, neverthelesswe owe a great deal to him for having,once for all, put an end to the ridiculoustheory of dental worms, and for havingtried to find a reasonable explanation ofthe manner in which caries is produced. Of filling teeth. As to the treatment: When caries wasvery superficial he used the file (Fig. 3) ;when it was deeper he removed the decay,prepared the cavity, and after using oilof cinnamon, of which he was very fond,he filled the tooth. The materials usedfor this were lead, tin, and gold. Finetin, he says, is preferable to lead, for lead turns black in the mouth much moreeasily and is much less durable; both arepreferable to gold, because lighter andadapting themselves better to the uneven-ness of the cavity. Besides, gold beingdear, not every one can, or will, makethe corresponding outlay. Fig. Separating files. The author here adds that those who—from vanity, or because possessed of theopinion that gold has special virtues—will not have their teeth filled except withit, not unfrequently find dentists the saying goes, content them andcozen them by using leaf tin or lead,colored yellow, making them pay for itas gold! The leaf metals were intro-duced somewhat after the fashion of soft-gold cylinders, and compressed by meansof three kinds of pluggers, which wouldnowadays be considered insufficient, butwhich nevertheless served to make ex-cellent fillings. (Fig. 4.) ( Fauchardspeaks of a lead filling which had lastedin perfect condition for forty years. In writing of the preparation of a cari-ous cavity he makes the following inter-esting comment: It is not possible 1240 THE DEXTAL COSMOS. sometimes to avoid uncovering the nervewith the instruments; one becomes awareof this by the pain caused, and betterstill by a little blood issuing from thedenta
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