The Principles and Practice of Tooth Extraction and Local Anesthesia of the Maxillae
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 edition. Excerpt: ...General anaesthesia is induced by the introduction of such agents into the circulation which, acting upon certain cerebral centers, produce unconsciousness accompanied by complete loss of sensation. General anaesthetics are introduced by inhalation through the lungs and by intravenous or rectal infusion. They are absorbed by the blood, and thus carried to the brain. Local anaesthesia is the regional loss of sensation produced by the action of certain agents upon sensory nerves. Agents producing local loss of sensation are known as local anaesthetics. Local anaesthesia has displaced general anaesthesia to a large extent in dental and oral operations. Local anaesthesia can be produced by physical means, as cold and pressure, and by the use of drugs, as cocaine, eucaine, alypine, novocain, etc. Physical agents shall not be considered, but the writer shall confine himself strictly to the production of local anaesthesia by the use of drugs. Local anaesthesia can be produced by three methods: Direct application, infiltration and "nerve blocking" (conductive anaesthesia). Anaesthesia by direct application is obtained by painting the part with a solution of the anaesthetic or the application of a tampon dipped into such solution. For example, a tampon dipped into the anaesthetic and inserted into the nares will cause anaesthesia in the anterior part of the upper jaw. Infiltration anaesthesia is produced by the hypodermic injection of the anaesthetic into the field of operation. Conductive anaesthesia is obtained by injecting the anaesthetic into or about a nerve trunk, producing anaesthesia in the whole area of distribution of that particular nerve; prohibiting afferent impulses traveling along this nerve and its branches, and thus...
- 189 x 246 x 2mm | 91g
- 13 Sep 2013
- Illustrations, black and white