This paper is a resume of the results or clinical research on tooth ext- ractions under acupuncture anesthesia (AA) during the 10 year pericd from March 1972 to Feb.1983 in our department

the number totaling 3

150 cases. There were 3

691 permanent teeth which were extracted. The majority of them were stimulated by the electric current with acu- puncture anesthesia apparatus (AAA) and the five acupoints in the maxill- of acial region were used

i.e. Renkuang

Chenghai

Bichungou

Yaojishang and Xiachicao. The effcts of AA were divided into 4 grades. The rates of Ⅰ and Ⅱ grades were from 60.01-86.73%

which averaged 80.12% in all caese. Several main data were analysed statistically: There appeared te be no relationship between the effect of tooth extr- actions under AA and sex(P>0.05) The age of patients had relation to the effects of tooth extractions under AA

those younger than 15

the effects of AA were worse than the other groups (P<0.01). The relation between the induction time and the effects of AA

there was no significant difference in every group (P>0.05). Usually

7'-14' were used. There seems to be no relation between the duration of operation and the effect of AA (P>0.05). The position of teeth showed reationship to the effects of tooth extra- ction under AA: the maxillary ones were superior to the mandibular ones

the anterior ones were superior to the posterior ones

the effects of AA of anterior teeth in maxilla were the best

while the effects of AA in lower molars were poor (P<0.01). The acupoints had relative particularity. Among the acupoints which showed significant differenoe in the effect of AA

Xiachicao proved poor (P<0.01). Type of diseases operated upon: tooth extractions for prosthesis & or- thodontics etc

had the best effects in AA

but the impacted teeth and tooth extractions in acute inflammatcry states had poor effects (P<0.01). In our opinion

tooth extactions under AA have many advantages: Th- ere are convenience and safety

but no severe complications and no alleric reactions

the postoporative reactions are mild. The majority of patients need no sadatves. It may be considered that the intensity of electrical stimulation is stadle the frequency being equal

adjustabe

persistent

and easy of control. Better AAA could raise the rates of grades Ⅰ and Ⅱ. The authors suggest that this method might be used more widely exce- ptng the impacted teeth

tooth extraction during acute inflammatory states and non-vital teeth in all of which AA can still be used in selected cases.