Improvements in the manufacture of artificial teeth / [Antonio Villar].

  • Villar, Antonio.
Date:
1898
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in the manufacture of artificial teeth / [Antonio Villar]. Source: Wellcome Collection.

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    Villar's Improvements in the Manufacture of Artificial Teeth. _ The accompanying drawings that shew my system, forming the object of the present patent, give a clear idea thereof. Figure 1 represents an upper central tooth : Figure 2 represents a lateral tooth : Figure 3 represents a dogtooth : Figure 4 represents a bicuspid grinder : Figure 5 represents a second bicuspid grinder : Figure 6 represents a first large grinder: b igure 7 represents a second large grinder: , __ Figure 8 is a view of the body of the porcelain tooth with its base upwards, and 10 showing the palate face : Figure 9 is a view of the hereinafter described platinum plate detached : Figure 10 is a view of my complete tooth with the said platinum plate connected to the body thereof; and, Figure 11 is a view of the complete tooth with its base downwards and also shewing 10 According to the invention the teeth are formed of porcelain with their outside surfaces convex instead of flat as has heretofore been the case and each tooth is provided with a plate A of platinum or other suitable material having a flange <x, the said plate being suitably secured to the tooth. The inside concave surface of the 20 tooth forms with the platinum or other plate A a cavity B as clearly seen in the figures, whereby the tooth can be fitted in position, the said cavity B or hollow base also serving for the creation of a vacuum to ensure the closer fitting of the tooth. As shewn the inner concave surface or base of the tooth is grooved at C to cause the tooth to engage more securely with the caoutchouc or the like to which it is to 25 be fitted. D is the lingual i.e. the porcelain tongue or palate face of the tooth. This new form of teeth has the following advantages : 1. Owing to their shape every sort of work can be done in Logan crowns, bridge work, suspension bridge work and removable crowns and they are readily applicable AG to plates of all kinds of plastic substances, such as caoutchouc and celluloid because although my teeth lack the fastener or pins of plane teeth this is compensated for by the greater safety afforded by the hollow base B and flange a; they are also applicable to metallic plates without requiring any special preparation on the part of the patient. 35 2. They can be used as crowns not only on account of the hollowness of the base but also because of their shape and since a shank may be added their preparation proves as easy as that of teeth of the Logan type. 3. The work in caoutchouc will be less bulky and stronger than hitherto as by this form of teeth the resistance only exists in the socket arch and not in the whole 40 mechanism, as is the case with other types of teeth. 4. Partial work is so simplified that there is no need for making metal moulds for joining and as the use of base plates can be dispensed with there is no necessity for making any die. 5. Owing to their simple application as crowns and to the easy way in which these 45 crowns can be welded to each other, my teeth prove highly useful in the so-called bridge-work since by merely adjusting and welding the crowns of the manufactured teeth by their metallic continuous faces, we obtain a bridge as desired and avoid the innumerable manipulations which are indispensable in other systems not excluding the Bichmond system now so much in vogue. 50 (5. My system has been specially designed for the construction of teeth without a palate and by its employment this difficult problem is resolved in the greater number of cases. ° 7. Teeth made according to my system have a closer resemblance to natural ones especially on the side facing the tongue or palate. From the combination of the 55 advantages it follows that the new type of teeth is capable of as general a use as ordinary teeth, which it is intended to substitute and if to this is added the