Lectures on operative dental surgery and therapeutics . Carbolized paper capping the pulp. h. Oxychloride of zinc, interposed as a non-conductor to thermalchange. tion; therefore, oxychloride of zinc should be placed abovethe paper capsule, as a further protection from thermalchange. The subject under consideration cannot be too well 130 understood; and, for this reason, I shall endeavour togive a detailed description of the dangers which en-compass the attempt at preservation of an exposedpulp. The repeated excitation of this organ, or continuedirritation for any length of time, materially au
Lectures on operative dental surgery and therapeutics . Carbolized paper capping the pulp. h. Oxychloride of zinc, interposed as a non-conductor to thermalchange. tion; therefore, oxychloride of zinc should be placed abovethe paper capsule, as a further protection from thermalchange. The subject under consideration cannot be too well 130 understood; and, for this reason, I shall endeavour togive a detailed description of the dangers which en-compass the attempt at preservation of an exposedpulp. The repeated excitation of this organ, or continuedirritation for any length of time, materially augmentsthe morbid tendencies. Commencing with local irritation,following with congestion, and terminating in suppuration ;it ultimately extends to adjacent tissues, when the diseasecan no longer be considered local, but systemic, andmust be treated as such. The cornu, not being in anyparticular plane, curves concentrically with the surfacesof the teeth. The following illustration is intended tomore clearly reveal the position as shown in Fig. 41. c -. Fig. view of the last Figure, a. Walls between h, c c. e. Point of exposure. f. Fracture. g. Prepared Cavity. The difficulty presented in this instance does not, how-ever, express the degree to which, by complication, eventhe initial exposure of the pulp may be aggravated. Inthe case before us, the cornu has been intersected at apoint; but, should the area of disease assume a parallelismwith the superficies of the pulp chamber, a single strokeof the excavator may remove the osseous covering andreveal a projecting angle, or, further, a portion of theparietes may be destroyed, causing an exposure of a very 131 appreciable length and breadth. Such an occurrence issometimes associated with the accidental penetration ofthe pulp, and must be met by the adoption of methodsof obtunding pain commensurate with the gravity of theoccasion. The increased vascularity of the pulp wherethe floor of
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