A practical treatise on mechanical dentistry . tween the crown and root,which may be done with a small, round-headed bur. ARTIFICIAL CROWNS. 493 There are some cases in which the root cannot be filled withanything; if in a molar, the pulp-chamber can be relied upon tohold a headed pin or pins. When a tap-hole is required in theroot it can be made low down and at an acute angle, and the amal-gam packed around the root canal above the tap. Should an artificial crown be broken, another can easily besubstituted by burring off any excess of amalgam, and using freshamalgam, mixed thin, to allow of r
A practical treatise on mechanical dentistry . tween the crown and root,which may be done with a small, round-headed bur. ARTIFICIAL CROWNS. 493 There are some cases in which the root cannot be filled withanything; if in a molar, the pulp-chamber can be relied upon tohold a headed pin or pins. When a tap-hole is required in theroot it can be made low down and at an acute angle, and the amal-gam packed around the root canal above the tap. Should an artificial crown be broken, another can easily besubstituted by burring off any excess of amalgam, and using freshamalgam, mixed thin, to allow of ready adjustment. Two crowns can be inserted on the root of one large molar withthe assistance of the decayed approximal surface of an adjacenttooth (see Fig. 330). The Porcelain Dovetail Tooth Crown.—These crowns aredesigned for the roots of bicuspids and molars only, and the processof mounting them may be very briefly described: Fig. 333 shows the roots of an inferior molar after the apical Fig. 333. Fig. 334. Fig. 335. Fig. 336. Fig. Fig. 338.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1903
