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Flu. 73.

Fig. 72. Third rubber Jam grasp, for upper right Incisors, cuspid and bicuspids, and lower
left incisors, cuspid and bicuspids. Loft thumb and right forefinger on occlusal side, with nails over
margin of hole in rubber. Rigtit thinub and left forefinger on gingival side.
Fig. 73. Third grasp. Position at chair right side behind. First movement; rubber passed
over tooth ; nails of thumb and finger on occlusal side against the tooth.
Fig. 74. Third grasp. Second movement; release the grasp on rubber by thumb and finger
on gingival side, holding it against the gums with the nails of the thumb and finger on the
occlusal side until the rubber has closed around the tooth.