About the middle of the fourteenth century that prince of surgeons, and model of surgical writers, Guy de Chauliac, wrote his great text-book of surgery, "Le Grande Chirurgie." An extremely interesting feature of this work is to be found in the chapters that treat of diseases of the teeth. These are not very comprehensive, and are evidently not so much the result of his experience, as the fruit of his reading, yet they contain many practical valuable ideas that are supposed to be ever so much later than the middle of the fourteenth century. His anatomy and physiology at least are not without many errors. His rules for the preservation of the teeth show that the ordinary causes of dental decay were well recognized even as early as this. Emphasis was laid on not taking foods too hot or too cold, and above all not to follow either hot or cold food by something very different from it in temperature. The breaking of hard things with the teeth was recognized as one of the most frequent causes of such deterioration of the enamel as gives opportunity for the development of decay. The eating of sweets, and especially the sticky sweets—preserves and the like—was recognized as an important source of caries. The teeth were supposed to be cleaned frequently, and not to be cleaned too roughly, for this would do more harm than good. We find these rules repeated by succeeding writers on general surgery, who touch upon dentistry, or at least the care of the teeth, and they were not original with Guy de Chauliac, but part of the tradition of surgery.
As noted by Guerini in his "History of Dentistry," the translation of which was published under the auspices of the National Dental Association of the United States of America,[28] Chauliac recognized the dentists as specialists. Besides, it should be added, as is evident from his enumeration of the surgical instruments which he declares necessary for them, they were not as we might easily think in the modern time mere tooth pullers, but at least the best among them treated teeth as far as their limited knowledge and means at command enabled them to do so, and these means were much more elaborate than we have been led to think, and much more detailed than we have reason to know that they were at certain subsequent periods.
In fact, though Guy de Chauliac frankly confesses that he touches on the subject of dentistry only in order to complete his presentation of the subject of surgery and not because he has anything of his own to say with regard to the subject, there is much that is of present-day interest in his brief paragraphs. He observes that operations on the teeth are special and belong to the dentatores, or dentists, to whom doctors had given them over. He considers, however, that the operations in the mouth should be performed under the direction of a physician. It is in order to give physicians the general principles with which they may be able to judge of the advisability or necessity for dental operations that his short chapters are written. If their advice is to be of value, physicians should know the various methods of treatment suitable for dental diseases, including mouth washes, gargles, masticatories, anointments, rubbings, fumigations, cauterizations, fillings, filings, and the various manual operations. He says that the dentator must be provided with the appropriate instruments, among which he names scrapers, rasps, straight and curved spatumina, elevators, simple and with two branches, toothed tenacula, and many different forms of probes and canulas. He should also have small scalpels, tooth trephines, and files.
Chauliac is particularly emphatic in his insistence on not permitting alimentary materials to remain in cavities, and suggests that if cavities between the teeth tend to retain food material they should even be filed in such a way as to prevent these accumulations. His directions for cleansing the teeth were rather detailed. His favorite treatment for wounds was wine, and he knew that he succeeded by means of it in securing union by first intention. It is not surprising, then, to find that he recommends rinsing of the mouth with wine as a precaution against dental decay. A vinous decoction of wild mint and of pepper he considered particularly beneficial, though he thought that dentifrices, either powder or liquid, should also be used. He seems to recommend the powder dentifrices as more efficacious. His favorite prescription for a tooth powder, while more elaborate, resembles to such an extent, at least some, if not indeed most of those, that are used at the present time, that it seems worth while giving his directions for it. He took equal parts of cuttle bone, small white sea-shells, pumice stone, burnt stag's horn, nitre, alum, rock salt, burnt roots of iris, aristolochia, and reeds. All of these substances should be carefully reduced to powder and then mixed. His favorite liquid dentifrice contained the following ingredients,—half a pound each of sal ammoniac and rock salt, and a quarter of a pound of sacharin alum. All these were to be reduced to powder and placed in a glass alembic and dissolved. The teeth should be rubbed with it, using a little scarlet cloth for the purpose. Just why this particular color of cleansing cloth was recommended is not quite clear.
He recognized, however, that cleansing of the teeth properly often became impossible by any scrubbing method, no matter what the dentifrice used, because of the presence of what we call tartar and what he called hardened limosity or limyness (limosité endurcie). When that condition is present he suggests the use of rasps and spatumina and other instrumental means of removing the tartar.
Evidently he did not believe in the removal of the teeth unless this was absolutely necessary and no other method of treatment would avail to save the patient from continuous distress. He summarizes the authorities with regard to the extraction of teeth and the removal of dental fragments and roots. He evidently knew of the many methods suggested before his time of removing teeth without recourse to instrumental extraction. There were a number of applications to the gums that were claimed by older authors to remove the teeth without the need of metal instruments. We might expect that Chauliac would detect the fallacy with regard to these and expose it. He says that while much is claimed for these methods he has never seen them work in practice and he distrusts them entirely.
The most interesting phase of what Guy de Chauliac has to say with regard to dentistry is of course to be found in his paragraphs on the artificial replacement of lost teeth and the subject of dental prosthesis generally. When teeth become loose he advises that they be fastened to the healthy ones with a gold chain. Guerini suggests that he evidently means a gold wire. If the teeth fall out they may be replaced by the teeth of another person or with artificial teeth made from oxbone, which may be fixed in place by a fine metal ligature. He says that such teeth may be serviceable for a long while. This is a rather curt way of treating so large a subject as dental prosthesis, but it contains a lot of suggestive material. He was quoting mainly the Arabian authors, and especially Abulcasis and Ali Abbas and Rhazes, and these of course, as we have said, mentioned many methods of artificially replacing teeth as also of transplantation and of treatment of the deformities of the dental arches.
On the whole, however, it must be confessed that we have here in the middle of the fourteenth century a rather surprising anticipation of the knowledge of a special department of medicine which is usually considered to be distinctly modern, and indeed as having only attracted attention seriously in comparatively recent times.
After Guy de Chauliac the next important contributor to dentistry is Giovanni of Arcoli, often better known by his Latin name, Johannes Arculanus, who was a professor of medicine and surgery at Bologna and afterwards at Padua, just before and after the middle of the fifteenth century, and who died in 1484. He is famous principally for being the first we know who mentions the filling of teeth with gold.
It might possibly be suggested that coming at this time Arculanus should rather be reckoned as a Maker of Medicine in the Renaissance than as belonging to the Middle Ages and its influences. His education, however, was entirely completed before the earliest date at which the Renaissance movement is usually said to begin, that is with the fall of Constantinople in 1452, and he was dead before the other date, that of the discovery of America in 1492, which the Germans have in recent years come to set down as the end of the Middle Ages. Besides, what he has to say about dentistry occurs in typical medieval form. It is found in a commentary on Rhazes, written just about the middle of the fifteenth century. In the later true Renaissance such a commentary would have been on a Greek author. In his commentary Arculanus touches on most of the features of medicine and surgery from the standpoint of his own experience as well as from what he knows of the writings of his predecessors and contemporaries. With the rest he has a series of chapters on diseases of the teeth. Guerini in his "History of Dentistry" says that "this subject [dentistry] is treated rather fully, and with great accuracy." Even some short references to it will, I think, demonstrate this rather readily.[29]