The Italian dentist Ruspini presenting the children of his orphanage to the members of the Free Masons Hall in London with whose aid the institution had been founded.
The unfavorable judgments passed on Bunon by some writers result, in a great measure, from the circumstance that one finds quoted in his books certain modes of treatment that today appear positively ridiculous. But those who, very wrongly and with deplorable levity, consider Bunon as nothing more than a vulgar empiric, ought to reflect that even the greatest men cannot altogether avoid the influence of the ideas and the prejudices of their time. Some tribute they are almost fatally bound to pay to these prejudices. It is, therefore, not to be wondered at, if one finds in Bunon’s works, as well as in those of many other old writers, indications given of more or less strange remedies. Thus, as facilitating the eruption of teeth, he recommends among other remedies the rubbing of the gums with a mixture of honey, fresh butter, hare’s brains, and oil of lilies, or with the fat of an old cock, dog’s milk, and pig’s brains. Against the disorders and dangers of the teething period he also advises rubbing the nape of the infant’s neck, the shoulders, the back, and the lower limbs, always taking care, however, to rub from above downward, thus offering opposition to the flow of humors toward the upper parts of the body.
These means and methods of treatment reflect, so to speak, the medical ideas and the curative practices of that time, and come down, in part, from remote ages, as evidently appears from what is said in different parts of this book. But such small blemishes ought certainly not to be taken into account in passing judgment on Bunon’s works, the most substantial part of which is made up of very original ideas and observations. The high intrinsic value of Bunon’s works gives him a just right to be considered one of the most illustrious forerunners of modern scientific dentistry.
Bartolomeo Ruspini, an Italian dentist, exercised his profession in London with great success for more than thirty years. He was patronized by all the greatest personages of the Kingdom and also by the Royal family, from whom he received special marks of distinction. He attained a very conspicuous position, and with the aid of the London Freemasons’ Lodge, of which he was an influential member, but chiefly by the results of his professional work, he was able to found an orphanage that was called by his name, being moved to do this by his great love for children, whose dental maladies and disorders had always been an object of particular study for him. In 1768 he published A Treatise on the Teeth, Their Structure and Various Diseases. This book was remarkably well received and went through a number of editions, the last in the year 1797. Ruspini did not, in reality, contribute very much to the development of dental science. He is, however, to be especially remembered as the inventor of a very good mouth mirror, a means of examination which afterward gradually came into general use.
Having brought our history of dentistry up to the end of the eighteenth century, in order to complete our work we must now speak of an innovation in dental prosthesis, which, although gradually brought to perfection in the following century, was first introduced at that time. We allude to the
INVENTION OF MINERAL TEETH.
The merit of this invention is due, in part, to an individual outside the dental profession, namely, to the French chemist Duchâteau, of St. Germain en Laye, near Paris, who first had the idea of employing porcelain as material for dental prosthesis. However, his idea would not have yielded fruitful results had it not been for the coöperation of the dentist Dubois de Chemant, who succeeded in putting it into practice.
The circumstances connected with this invention were the following: The chemist Duchâteau had for some time worn a denture of hippopotamus ivory, but as usually happened with all the prosthetic pieces of that time, which were made of organic material, and were, therefore, subject to decay, this denture had acquired a very disagreeable odor, resulting from the action of the buccal humors. Besides which, Duchâteau being obliged, by reason of his profession, to continually taste pharmaceutic preparations, his denture had gradually become impregnated with medicinal substances that imparted a nauseous taste to everything he ate. The unpleasantness of this was a subject of much consideration with him, and thus it was that, to remedy the evil, he gradually matured the idea of having a porcelain denture made, on the model of the ivory one. In the year 1774 he applied to the porcelain manufactory of M. Guerhard in Paris for the carrying out of his design. The first trial was not successful, for in the baking the paste contracted so much that the denture was no longer of the right dimensions. To remedy this, he now had another and larger denture made, to allow for its contraction in the baking. But the results did not correspond with his wishes, and many trials were still necessary before Duchâteau was able to obtain a denture which he judged fit for use, although not without defects. As this denture, because of its dead whiteness, produced an unpleasant effect, he had a yellowish tint, resembling that of the natural teeth, given to it, and, as is usual with painting on porcelain, fixed this color by baking a second time.
However, this denture proving unserviceable, Duchâteau was obliged to put it aside and begin new experiments. These were made with a special kind of porcelain paste used in France for the first time in 1740, which vitrified in baking at 12° to 25° by Wedgwood’s pyrometer, whilst the usual porcelain required a temperature of 72° to 75° by the same test; but the results thus obtained were no better than the preceding ones, and upon these new failures Duchâteau applied to the dentist Dubois de Chemant, of Paris, for his collaboration. Together they made fresh attempts, modifying the composition of the paste by adding a certain quantity of pipe clay and other coloring earths to it. These modifications enabled them to carry out the baking of the pieces at a much lower temperature, and after various experiments the final result was a denture that fitted the gums well enough, and which, in point of fact, Duchâteau was able to wear.