A practical treatise on mechanical dentistry . a thin, perforated disc of gutta-percha, pushes the post through it,warms the crown, presses it into place, and when cooled removesit, and with a sharp knife trims away the gutta-percha close to thecrown neck. He then warms the crown, puts a very little oxy-phosphate cement on the post, and presses the crown home. shows the completed crown. The obvious advantages of the device are the readiness withwhich the slopes of the root end may be shaped with a file; thefacility with which these slopes may be given any angle to set thecrown out or i
A practical treatise on mechanical dentistry . a thin, perforated disc of gutta-percha, pushes the post through it,warms the crown, presses it into place, and when cooled removesit, and with a sharp knife trims away the gutta-percha close to thecrown neck. He then warms the crown, puts a very little oxy-phosphate cement on the post, and presses the crown home. shows the completed crown. The obvious advantages of the device are the readiness withwhich the slopes of the root end may be shaped with a file; thefacility with which these slopes may be given any angle to set thecrown out or in at the base, or at the cutting edge, or to give it atwist on its axis; the certainty that, once adjusted, the final settingwill exactly reproduce the adjustment; the assurance that in usethe crown will not be turned on its axis, a most common cause ofthe loosening of artificial crowns; the firmness of its resistanceto outward thrust in the act of biting. This is made apparent by ARTIFICIAL CROWNS. 487 Fig. 315, wherein it will be seen that
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1903
