. Oral anaesthesia; local anaesthesia in the oral cavity, technique and practical application in the different branches of dentistry. ess. In chronic alyiolar abscesses there is usuallyChronic Alvi- no sensation in the tooth, and the treatmentolar Abscess can be applied to tln^ root canal withoutanaesthesia. Very frequently, however,there is a graniilniii at the apex wliich (h)es not alwaysyield treatment from the root canal, and has to be remoyedsurgically. If it is treated from the root canal there is usuallyno need of anaesthesia, except the tooth be sensitive on percus-sion. The surgical t
. Oral anaesthesia; local anaesthesia in the oral cavity, technique and practical application in the different branches of dentistry. ess. In chronic alyiolar abscesses there is usuallyChronic Alvi- no sensation in the tooth, and the treatmentolar Abscess can be applied to tln^ root canal withoutanaesthesia. Very frequently, however,there is a graniilniii at the apex wliich (h)es not alwaysyield treatment from the root canal, and has to be remoyedsurgically. If it is treated from the root canal there is usuallyno need of anaesthesia, except the tooth be sensitive on percus-sion. The surgical treatment consists in opening up and cur-etting the apex of the tooth and cavity thoroughly. Amputa-tion of the apex of the root is only necessary if it is infected,partly absorbed or gangreiions. Usually tliere is little inflaniination and the infection isconfined to the i-egion of the a|»e.\ of the alviolns. In these 114 ORAL ANAESTHESIA cases the infiltration method can be used, and anaesthesia canbe produced as in Table II. In cases where the inflammationcovers a larger field, the conductive method is preferable,(Table IV.). Fig. 71. Chronic alviolar abscesses. No. 1 shows chronic abscess on first andsecond bicuspid. No. 2 shows chronic abscess on left central carrying a central pulp chamber almost entirely calcified, filling extending into middleof tooth, abscess on the apex. Right lateral shows also a chronic suffers of rheumatism. No. 3. Chronic abscess on second cyst on six-year molar. Teeth feel lame from time to time. Abscesses are not always originated from in-Pericemental fected pulps, but often occur on the side of theAbscess root from pockets, perforations or foreign ma- terial. These have to be curetted and cleaned,which is a painful process and should be done under localanaesthesia. The gum only needs to be anaesthetized, afterTable II or IV, as required for individual cases. Sometimes there is obscure pain either of n
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