. Oral anaesthesia; local anaesthesia in the oral cavity, technique and practical application in the different branches of dentistry. After the window is cut andthe broach exposed. Fig. 84. After filling of the window. 128 ORAL ANAESTHESIA 3. Window Operation. If there is a perforation, we cutit smooth and for retention. If a foreign body is lodged in theroot canal, we locate it with the Kadiograph, cut a window overit and with a suitable instrument push it into the pulp cham-ber. Place a i)iece of cotton into the cavity to prevent it fromfalling out unseen. A smooth broach of sufficient
. Oral anaesthesia; local anaesthesia in the oral cavity, technique and practical application in the different branches of dentistry. After the window is cut andthe broach exposed. Fig. 84. After filling of the window. 128 ORAL ANAESTHESIA 3. Window Operation. If there is a perforation, we cutit smooth and for retention. If a foreign body is lodged in theroot canal, we locate it with the Kadiograph, cut a window overit and with a suitable instrument push it into the pulp cham-ber. Place a i)iece of cotton into the cavity to prevent it fromfalling out unseen. A smooth broach of sufficient size is nowplaced into the canal, and the window is filled with amalgam,which is smoothed off carefully. Again prevent amalgam fromfalling into the wound, wash out and close the wound. Eemovethe broach carefully after the amalgam is hard and fill the rootcanal at a subsequent Fig. 85. Radiographic serie illustrating the window operation. No. 1, showsbroken instruments. No. 2, instrument removed. No. 3, root canal and window filled. 4. Root amputation and Apex amputations. In molars, especially in pyorrhoetic conditions or cervical caries, it becomessometimes necessary to amputate an entire root, as the palatalor one buccal root of an upper molar, or the mesial root of alower molar. This is an easy operation. To amputate the apexonly requires more skill. When we have the apical part ofthe root in plain view, we diagnose whether it is a fissure burr we cut it off crossways at a point where itis healthy, and to which the root filling extends. Now comesthe most important act, the removal of the granulation is removed with a curette till healthy bone is visible on OPERATION FOR APEX AMPUTATION
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