Principles and practice of operative dentistry . ing intothe larynx or becoming lodged in the oesophagus. In the administration of nitrous oxide a mouth-prop (Fig. 654 or ) is necessary to keep the mouth open during the operation. Thisshould be applied before the mouth-piece is placed in position, so thatwhen anaesthesia is complete no time will be lost in efforts to pry the mouthopen to insert the proj). Props made of wood or vulcanite are the best; they should have along string securely fastened around the centre by which they may bewithdrawn if by accident they should be dislodged an
Principles and practice of operative dentistry . ing intothe larynx or becoming lodged in the oesophagus. In the administration of nitrous oxide a mouth-prop (Fig. 654 or ) is necessary to keep the mouth open during the operation. Thisshould be applied before the mouth-piece is placed in position, so thatwhen anaesthesia is complete no time will be lost in efforts to pry the mouthopen to insert the proj). Props made of wood or vulcanite are the best; they should have along string securely fastened around the centre by which they may bewithdrawn if by accident they should be dislodged and fall into the fauces. Clothing which is tight at the throat or the waist should be loosened, ANESTHETICS, LOCAL AND GENEEAL. 669 that there may be no obstruction to the most perfect movements of breath-ing. In the extraction of teeth, and particularly of roots, the operator shoulduse the utmost care to prevent the tooth or root from slipping from theforceps and falling into the larynx, and when the elevator is used to dis- FiG. 655. Fig.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
