The significance of the natural form and arrangement of the dental arches of man : with a consideration of the changes which occur as a result of their artificial derangement by filing or by the extraction of teeth / by Isaac B. Davenport.

  • Davenport, Isaac Burnet.
Date:
[1887]
Catalogue details

Licence: Public Domain Mark

Credit: The significance of the natural form and arrangement of the dental arches of man : with a consideration of the changes which occur as a result of their artificial derangement by filing or by the extraction of teeth / by Isaac B. Davenport. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    4/32 (page 2)
    Each side of both arches, upper and lower, is furnished with its double row of molar cusps, so arranged that the outer, lower row works between the two upper rows, and the inner, upper row works in the irregular groove between the two lower rows. Fig. 1—B. Inferior Arch. The double cuspid arrangement ceases at the angle of the mouth, by the suppression of the inner row of cusps and the modification of the outer row into cutting-edges. This suppression of cusps prevents an interlocking which would defeat the normal movements of mastication. Fig. 1—C. Exterior View of Articulation. The upper incisors shut past the lower perhaps a little more than the height of the molar cusps. This permits of the cutting move- ments of the incisors without too much striking of the cusps. (See Figs. 1—C—D, and Fig. 8.)