Notes on dental practice / Henry C. Quinby.

  • Quinby, Henry C.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: Notes on dental practice / Henry C. Quinby. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    simple enough, unless, from neglect, their walls are allowed to become too weak to stand the packing of gold fillings. It is a common practice, however, to prepare all such cavities by simply driving a rose drill into them, and then inserting the filling. This is a rough and ready way of preparing for a failure, unless the drill is unnecessarily large, for such cavities are never cylindrical in shape, and a drill will either not cut out enough to make the filling safe, or it will cut away too much sound dentine. It is perhaps well enough to open a cavity of this description with a drill, but it should never be considered ready for a filling until all the fissures radiating from it are cut out, which may be done with fissure drills, or with a narrow enamel chisel. My own practice is to open all these cavities with a chisel, feeling the depth and extent of the decay, and noting the course of the fissures which are to be cut out after I have ascertained the nature of the cavity, when the fissure drills may be very useful. I find this a safer course, as one will sometimes meet with a case where, after cutting away a com- paratively strong substance of enamel, the drill will plunge suddenly into a soft and sensitive dentine, to the great discomfort and alarm of the patient; and # all this is better to be avoided if possible. Not infrequently there will be two or three of these cavities in a grinding surface, and they may be connected by narrow fissures, or possibly, but more rarely, they may be separated by perfectly sound, well calcified enamel. There cannot, however, be
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