. The Dental cosmos. lso some other varieties, the tube of thetube tooth could be readily shaped toconform with the basal anchorage of thebroken one, by means of Butlers carbo-rundum points and small wheels. Thetrouble associated with the use of theseresults from the difficulty of keepingthem from becoming overheated, as theuse of a small piece of wet sponge doeslittle to prevent this, and repeated dip-ping of the point in water is both slowand troublesome, and results in the temp-tation to go on grinding until there isa danger of spoiling the point. In order 1048 THE DENTAL COSMOS. to avoid t
. The Dental cosmos. lso some other varieties, the tube of thetube tooth could be readily shaped toconform with the basal anchorage of thebroken one, by means of Butlers carbo-rundum points and small wheels. Thetrouble associated with the use of theseresults from the difficulty of keepingthem from becoming overheated, as theuse of a small piece of wet sponge doeslittle to prevent this, and repeated dip-ping of the point in water is both slowand troublesome, and results in the temp-tation to go on grinding until there isa danger of spoiling the point. In order 1048 THE DENTAL COSMOS. to avoid this, and at the same time todo the work more efficiently and verymuch more quickly, the writer has beenin the habit of employing a small rubbercup, in which the tooth is placed () and held securely by the fingers ofthe left hand. These small rubber cupsare known as rubber thimbles, and areused by bankers when counting papermoney. The cup is partially filled withwater, the amount of which can be regu- Fig. Grinding under water. lated by the pressure of the fingers whichgrasp the tooth, so that it may be keptcovered during the grinding process, anduncovered by slightly relaxing the gripwhen it is desired to ascertain how thegrinding progresses. In this manner thepoint may be safely run at a high speedwithout danger of overheating, and witha fair amount of pressure the tube maybe given such shape as is desired. Themethod suggested will also be found use-ful where small stones are employed, andis particularly valuable where diamonddrills, points, or disks are used, and it isto be observed that the tube in a tubetooth or porcelain rod is a very great helpwhen a recess has to be formed; whilean alternative method of procedure, inconnection with the method already de- scribed, of grinding under water, is topartially embed the tooth or facing to beground, in a mass of dental lac or model-ing compound placed in and stuck tothe bottom of a small metal cup whichcan be partial
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
