The Natural History of the Human Teeth: Explaining Their Structure, Use, Formation, Growth, and Diseases. To which is Added, a Practical Treatise on the Diseases of the Teeth

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J. Johnson, 1778 - Dentistry
 

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Page 125 - ... be done by the same powers which produce the lateral motion ; but where these cannot be applied, as is frequently the case, the Tooth may be either pulled out entirely, and put in again even, or it may be twisted round sufficiently to bring it into a proper position, as hath been often practised.
Page 62 - The Jaw still increases in all points till twelve months after birth, when the bodies of all the six Teeth are pretty well formed ; but it never after increases in length between the symphysis and the sixth Tooth ; and from this time, too, the Alveolar Process, which makes the anterior part of the arches of both Jaws, never becomes a section of a larger circle, whence the lower part of a child's face is flatter, or not so projecting forwards as in the adult .fv.
Page 73 - ... healthy state, as to the methods of curing them, when diseased. They require this attention, not only for the preservation of themselves, as instruments useful to the body, but also on account of other parts with which they are connected ; for diseases in the Teeth are apt to produce diseases in the neighbouring parts, frequently of very serious consequences ; as will evidently appear in the following Treatise.
Page 118 - Teeth. that part of each jaw, which holds the ten foreteeth, is exactly of the same size when it contains those of the first set, as when it contains those of the second ; and as these last often occupy a much larger space than the first* ; in such cases the second set are obliged to stand very irregularly. This happens much oftener in the upper jaw, than in the lower ; because, the difference of the size of the two sets is much greater in that jaw. This irregularity is observed almost solely in...
Page 137 - Of transplanting a dead Tooth. THE insertion of a dead Tooth has been recommended, and I have known them continue for many years. If this always succeeded as well as the living, I would give it the preference, because we are much more certain of matching them, as a much greater variety of dead Teeth can be procured than of living ones. But they do not always retain their colour, but are susceptible of stain.
Page 66 - Capsula seems evident in the horse, ass, ox, sheep, &c. therefore we have little reason to doubt of it in the human species. It is a calcareous earth, probably dissolved in the juices of our body, and thrown out from these parts which act here as a gland. After it is secreted, the earth is attracted by the bony part of the Tooth, which is already formed ; and upon that surface it crystallizes. The operation is similar to the formation of the shell of the egg, the stone in the kidneys and bladder,...
Page 109 - ... the antrum, so that the matter may be discharged for the future that way. 'But if the fore part of the bone has been destroyed, an opening may be made on the inside of the lip, where the abscess most probably will be felt ; but this will be more apt than the other perforation to heal, and thereby may occasion a new accumulation ; which is to be avoided, if possible, by putting in practice all the common methods of preventing openings from healing or closing up ; but this practice will rather...
Page 55 - From this circumstance, and another that sometimes happens to women at this age, it would appear that there is some effort in nature to renew the body at that period.
Page 67 - ... imperfect ; nor in old animals, as in young : for the living principle in young animals, and those of simple construction, is not so much confined to, or derived from one part of the body ; so that it continues longer in a part separated from their bodies, and even would appear to be generated in it for some time; while a part, separated from an older, or more perfect animal, dies sooner, and would appear to have its life entirely dependent on the body from which it was taken. Taking off the...
Page 139 - A vulgar prejudice prevails against this practice, from an objection, that if the gum is lanced so early as to admit of a re-union, the cicatrised part will be harder than the original gum, and therefore the Teeth will find more difficulty in passing, and give more pain. But this is also contrary to facts ; for we find that all parts which have been the seat either of wounds or sores, are always more ready to give way to pressure, or any other disease which attacks either the part itself or the constitution....

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