Diseases of the soft structures of the teeth and their treatment; a text-book for students and practitioners . warning to presuming have used this remedy in hundreds of instances, without ever experiencing anyill effect; nor can any danger ever attend its proper application. Whenever thenerve of a tooth can be preserved it should not by any means be destroyed. 1 Is DISEASES OF THE DEh TAL Pi LP the direct cause of its death; in teeth with undeveloped or in thosewith partially absorbed roots, strangulation is very doubtful. Since the introduction of arsenic trioxid for the purpose ofd
Diseases of the soft structures of the teeth and their treatment; a text-book for students and practitioners . warning to presuming have used this remedy in hundreds of instances, without ever experiencing anyill effect; nor can any danger ever attend its proper application. Whenever thenerve of a tooth can be preserved it should not by any means be destroyed. 1 Is DISEASES OF THE DEh TAL Pi LP the direct cause of its death; in teeth with undeveloped or in thosewith partially absorbed roots, strangulation is very doubtful. Since the introduction of arsenic trioxid for the purpose ofdestroying the dental pulp many substitutes have been advocated,bu1 none have so far superseded it or taken its place. Aside fromthe application of local anesthetics by special methods, arsenictrioxid is -till the mosl universal agent employed for the abovepurpose. Usually it is applied in the form of a paste, sometimesas arsenical Bber or disks and as a dry powder. InnumerableFormulas for compounds of arsenic with other <\vu^ are suggestedfor such purposes. The principal objeel has always been to com-. Fia. 74. A put i Moginier.) bine arsenic trioxid with an anesthetic. Manj of the publishedformulas represent empirical compounds, which arc put togetherin utter disregard of the pharmacologic action of the individualdrugs. If the pulp is in a normal condition, very little or no painis manifested bj the arsenical application; if the nerve cells areinflamed or are undergoing necrobiotic changes the increased irri-tation brought about bj the powerful oxidation and reduction as aresult of the pharmacologic action of arsenic increases the alreadyexisting neuritis, and more or less severe pain results. Arsenic is\cr\ diffusible; it quickly destroys the nerve endings, and con-sequently there is little chance For the anesthetic which may be DEVITALIZATION OF THE DENTAL PULP 149 added to it to exercise its specific function. For this very reasonthe addition of a local anesthetic is of
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