. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . rill through the enamel and dentin until the pulp chamber is reached;then gradually enlarge the opening with burs or drills ot increasing 214.—Then increase the size of the entrance by inclining the shaft of thefissure bur first toward the gingival and then toward fhe incisal portions. (d) Enlarge the opening with the same instruments untilconvenient access is obtained, and then remove the entirewall of the pulp chamber, extending the cuttings out untilthe horns of the pulp
. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . rill through the enamel and dentin until the pulp chamber is reached;then gradually enlarge the opening with burs or drills ot increasing 214.—Then increase the size of the entrance by inclining the shaft of thefissure bur first toward the gingival and then toward fhe incisal portions. (d) Enlarge the opening with the same instruments untilconvenient access is obtained, and then remove the entirewall of the pulp chamber, extending the cuttings out untilthe horns of the pulp chamber are included. (e) Make the walls of the cavity and pulp chambercontinuous and smooth. (f) Remove the contents of the pulp chamber and alldebris (Figs. 213, 214, 215 and 216). 174 THE TREATMENT OP PULPS 2. Through Cavities of Decay. (a) Establish the outhne form, remove aU decay, andmake the cavity shghtly retentive. (b) If the pulp is not exposed, penetrate the dentin to thepulp chamber, with the drills or the bi-bevelled dentatefissure bur. (c) Remove the wall of the pulp chamber with a hoe.
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