Dental cosmos . A, Fig. 6,the septum would usually be cut through and the cavities be made FISSURE CHISELS. 941 one, and for connecting them by a narrow groove, chisel No. 1 wouldadmirably serve; but the example given in B is designed to exhibit thenicety with which such cavities may be shaped singly by the chiselsNos. 5 and 6. The other examples inall the lettered illustrationsare sufficiently explicit without detailed description. Fig. 10 isadded to emphasize the need for chisels which will enable the opera-tor to easily and quickly follow every fissure to its exterior termi-nation. The fill
Dental cosmos . A, Fig. 6,the septum would usually be cut through and the cavities be made FISSURE CHISELS. 941 one, and for connecting them by a narrow groove, chisel No. 1 wouldadmirably serve; but the example given in B is designed to exhibit thenicety with which such cavities may be shaped singly by the chiselsNos. 5 and 6. The other examples inall the lettered illustrationsare sufficiently explicit without detailed description. Fig. 10 isadded to emphasize the need for chisels which will enable the opera-tor to easily and quickly follow every fissure to its exterior termi-nation. The filled molars of the figure appear as types cf a commonclass of cavities which are frequently filled without due regard to theinitial fissures, the quite too common custom being to cut the mar-gins of the main cavities with round burs or chisels that are muchtoo large to enter the radiating fissures, that subsequently developinto destructive defects which endanger the safety of the otherwise Fig. 8. Fig. 9. Fig.
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Keywords: ., bookauthor, bookcentury1800, bookdecade1880, booksubjectdentistry
