. Journal - American Medical Association . wer all requirementsif it gave a little more power to distend the op-posing jaws. It has or gives a wide sweep of alever which works on a toggle joint and thus dis-tends the arms upon the ends of which are theswivel jaw troughs. These troughs should bebent back at less than a right angle to the sidearms so they will point inwards and backwards,and thus engage the jaws not quite as far for-wards as the incisor teeth. worried open and held so by the aid of a compe-tent assistant who can hold still the patientshead. The power by which the jaws are dis-te
. Journal - American Medical Association . wer all requirementsif it gave a little more power to distend the op-posing jaws. It has or gives a wide sweep of alever which works on a toggle joint and thus dis-tends the arms upon the ends of which are theswivel jaw troughs. These troughs should bebent back at less than a right angle to the sidearms so they will point inwards and backwards,and thus engage the jaws not quite as far for-wards as the incisor teeth. worried open and held so by the aid of a compe-tent assistant who can hold still the patientshead. The power by which the jaws are dis-tended by this instrument depends upon the slid-ing of a pivot attached to one arm in threeelliptic grooves made on a circular plate, thecentre of which is pivoted to the other arm ofthe gag. The wedge-shaped teeth troughs first,I believe, recommended by Dr. , of New York, are used on this instrument to favor an en-trance between the closed teeth. The gag is to beheld by the assistant firmly against the left cheekof the patient when in
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmedicine, bookyear1883
