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Updated: June 15, 2025
It is a ruminant, or an animal which has three or four stomachs. Its lower jaw is provided with eight incisors, while the upper jaw has nothing but a cushion or gum." "That's right enough," said Lucien, opening the fawn's mouth.
The dark streak or dental star is present in all of the teeth, and the remnants of the cups appear as small rings or spots of enamel near to the posterior borders of the tables. The notch in the superior corners may reappear at this time. TWELVE YEARS. The profile of the teeth when viewed from the side is quite oblique. The table surfaces of all the incisors are round.
In various parts of Africa and in the Malay Archipelago the natives file the incisors into points like those of a saw, or pierce them with holes, into which they insert studs. As the face with us is chiefly admired for its beauty, so with savages it is the chief seat of mutilation.
I cannot even say that these contemporary ancient Britons had the advantage of the toothless English peasantry in the prompt dentistry which is our peculiar blessing. In Great Britain, though I must not say Ireland, for I have never been there, a few staggering incisors seem a formidable equipment of the jaw in lower-class middle life and even tender youth.
After dinner, the conversation turned upon the duke's younger days, and the lady referred to addressed him in these words "I, monseigneur, never saw the dauphin; but an old friend, who was constantly near his person in his infancy, has described to me that from the midst of his lower jaw there sprung out two teeth. They were incisors, and as straight and pointed as the teeth of a rabbit."
The teeth of middle-aged horses may be long, and in aged animals, narrow and short. The incisors meet at a more acute angle in old than young horses. The free portion of the incisor tooth is flattened from before to behind. At the level of the gums its two diameters are about the same, but the portion of the tooth imbedded in the jaw bone is flattened from side to side.
This is done by both sexes; and though the under teeth, being relieved from the attrition of the upper, grow long and somewhat bent out, and thereby cause the under lip to protrude in a most unsightly way, no young woman thinks herself accomplished until she has got rid of the upper incisors. This custom gives all the Batoka an uncouth, old-man-like appearance.
First, there are those flat teeth in front of the two jaws, just below the nose. Touch yours with the tip of your finger; you will find that they terminate in sharp-edged blades, like knives. These are called incisors, from the Latin word incidere, which means to cut, and it is with them we bite bread and apples, where the first business is to cut.
However, the gnawing means as much to the squirrel as the eating, for the squirrel's teeth grow constantly and he must continually wear them off or he dies, stabbed by his own incisors which grow in the arc of a circle. Yet the squirrel is an adept at getting at the tiny, toothsome seed and he can strip a cone of its scales far faster than I can, even if I use my knife.
The significance of the natal eruption of teeth is not always that of vigor, as many of the subjects succumb early in life. There were two cases typical of fetal dentition shown before the Academie de Medecine de Paris. One of the subjects had two middle incisors in the lower jaw and the other had one tooth well through. Levison saw a female born with two central incisors in the lower jaw.
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