. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 219.—Reaming the canal with a Fig. 220.—Enlarging the canals of aKerr twist broach. lower molar with a Nub broach. present, as already described, the canals are ready for dryingand filling. Wrapping Cotton on Smooth Broaches.—The methodvaries, depending on whether the cotton, containing somemedicament, is to be temporarily left in the canal, or whether 178 THE TREATMENT OF PULPS it is to be immediately withdrawn on the broach, as in swab-bing or drying the canal. 1. When the Cotton i
. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 219.—Reaming the canal with a Fig. 220.—Enlarging the canals of aKerr twist broach. lower molar with a Nub broach. present, as already described, the canals are ready for dryingand filling. Wrapping Cotton on Smooth Broaches.—The methodvaries, depending on whether the cotton, containing somemedicament, is to be temporarily left in the canal, or whether 178 THE TREATMENT OF PULPS it is to be immediately withdrawn on the broach, as in swab-bing or drying the canal. 1. When the Cotton is to be left in the Canal.—(a) Placea few wisps of cotton on the pulp of the forefinger of the lefthand, (b) Lay a round or square smooth broach on thecotton, allowing the end of the cotton to extend slightlybeyond the point of the broach, (c) Rotate the broach to theright with the thumb and fingers of the right hand, at thesame time rolling the cotton in the same direction with thethumb and forefinger of the left hand. Roll the cotton fairlytightly at the point of the broach and loosely the r
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