The Dental cosmos . d tough. The cells of the pulp proper possessnuclei which are degenerate in shape and small in size; their branched are increasedin cumber and extremely well and there, in varying degrees of in-tensity, there seems to be a thickeningof the intercellular cementing substances Organization of the thrombi is ob-served to be proceeding in places, leav-ing only a thin fibrous cord or hyalineplug coherent to the walls or completelyfilling it up. CAUSES. Tinning from the patho-histologiealasped of this study, it is expedient and HOPBWBLL-8KITH.—FA80ULAS LBSIOVfl Of nil:
The Dental cosmos . d tough. The cells of the pulp proper possessnuclei which are degenerate in shape and small in size; their branched are increasedin cumber and extremely well and there, in varying degrees of in-tensity, there seems to be a thickeningof the intercellular cementing substances Organization of the thrombi is ob-served to be proceeding in places, leav-ing only a thin fibrous cord or hyalineplug coherent to the walls or completelyfilling it up. CAUSES. Tinning from the patho-histologiealasped of this study, it is expedient and HOPBWBLL-8KITH.—FA80ULAS LBSIOVfl Of nil: DENTAL PI LP. 137 useful to inquire what possible factorshave contributed to bring about this con-dition. Why has the blood coagulated!Why have the vessels become thrombosedand the soft tissues degenerated? Prob- selves. The rcascla quickly becomethrombosed, for instance, after the appli-cation of arsenous acid to an exposedsurface .of the pulp, because the vesselsare under hydrostatic conditions and in- Fig. ably the absence of a collateral circu-lation predisposes to it: but its excitingcauses cannot be so readily absence of collateral circulationwould predispose to the onset of throm-bosis in cases, also, where any obstruc-tion of outflow existed, in cases ofinflammation around the soft part-, orinflammation in the soft tissues them- closed in a resisting wall of dentin. Anvincreased volume of fluid (blood) mustbe compensated by a COfMpondlQg out-pouring—as there cannot be an adequatedisplacement of the surrounding parts,owing to their circumscribed nature—to atFord the room required. (It mustnot be forgotten, also, that no lym-phatics have ever been identified* as 138 THE DENTAL COSMOS. such in the pulp.) The thrombosis inthis instance, which might almost be re-garded as chemical or traumatic, is anearly stage of acute inflammation, and is zozero11 in 1882, and Eberth and Schim-melbusch12 in 1888, are the first of allthe blood elements to ac
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