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THE EIGHTEENTH CENTURT
.iO.-,
Georg Heurmann, a surgeon in CoptnlKiucii, iicomnu luls nuikino
use, after the Cowper-Drake operation, of a small cannula
in order to
facilitate the exit of the pathological material contained in the sinus, and
also to render it easier to introduce into it medicated or detersive sub-
stances.'
Lecluse. One of the most celebrated French dentists of the eighteenth
century is Lecluse. Dental literature was enriched by him with several
works, partly written in popular style, partly addressed to dental special-
ists. In 1750 he published his Traitc utile aii {yiiblic, oh Ton enwi^iii-
la tiiethode de remcdier anx doiileiirs et aiix accidents qui precedent et qui
accompagnent la sortie des premieres dents, de procurer un arrangement
aux secondes, enfiti de les entretenir et de les conscrver pendatit le coins
de la vie. The work seems to have been very favorably received, as its
first edition, printed in Nancv, was followed bv a second, printed in Paris,
only four years later. In 1755 he published another book: Eclat r-
cissements essentiels pour parvenir a preserver les dents de la carie et le
conserver jusqua Vextreme vieillesse. But the most important of his
works is the Nouveaux elements d'odontologie,'- the first edition of which
was published in 1754, and followed by a second in 1782.
We do not enter into a minute examination of these works, which,
taken altogether, do not contain anything very new. We will only remark
that Lecluse treated in a succinct but correct manner the anatomy of
the mouth; invented some and perfected other instruments, the most
important ot which is the elevator that still bears his name, and hnalh
that he frequently performed the operation of replantation, warmh
recommended by him as an excellent means of cure in certain cases of
caries. The extracted tooth was stopped and afterward replanted, and,
sa\"s Lecluse, became fast within eight days, proving as serviceable as a
perfectly healthy tooth, and never again causing any pain.
Philip Pfaff, dentist to Frederick the Great, King of Prussia, was the
first among the Germans who wrote a real treatise on dentistrw His
book^ contains, in 184 succinctly but well-written pages, the anatomical
and physiological notions relative to the teeth, as w^ell as all that belongs
to dental pathology, therapy, and prosthesis.
Besides a few observations about supernumerary teeth, Pfaff relates
several cases in which the incisors, inferior as well as superior, were
renewed (twice consecutively), that is, once at the usual epoch, and the

' Sprengel, Part ii (?), p. 322.
- Nouveau elements d'Odontologie, contenant ranatomie de la bouclic, ou la description
de routes les parties qui la composent, et de leur usage; et la pratique abregee du dentiste,
avec plusieurs observations, par M. Lecluse, Chirurgien dentiste de Sa Majeste le Roi de
Pologne, etc., Paris, 1754 (vol. in l2mo of pages viii-222 with six plates).
^ Abhandlung von den Zahnen des menschlichen Korpers und deren Krankheiten, 1756.
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