我科除少数阻生牙患者及部分本院职工系经选择或作过解释工作外

绝大多数病例常规地使用此种针麻仪于拔牙术

效果较好

兹分析如下:方法与穴位This paper describes the results of using the acupuncture anesthesia(AA)apparatur type CDMI-Ⅱ in 582 cases of tooth extraction

in which 731 teeth were extracted and 33(4.5%)were loosed to thesecond grade or above the second grade.No analgesic was given to any of the patients before and during operations.As a whole

five “AA-points”were employed in the maxillo-facial region

namely:the points Renkuang

Bichungou andYaojishang in the upper jaw and the points Chenghai and Xiachicoa in the lower jaw.In each case a main point and the adjunct point were used.The main point was connected to thepositive and the adjunct point to the negative poles.The parameters of the stimulating current wereas follows:Frequency:60

000/min.Wave form:Irregular bi-directional spiked pulse.Impulse duration:80/sec.Patients'ages ranged from 11 to 84 years old.Most of them were workers and peasants.The evaluation of the anesthesia effects were made in four grades in accordance with the criteriaset up by the Chinese Acupuncture Ansthesia Committee in 1972.The statistical evaluation of the main data shows that acupuncture anethesia has its least effect in the cases

in which AA pointXiachicao was used(P<0.01)

and in patients aged less than 15 years old(P<0.01).It appears that in treatment of orthopedics

prosthesis and malposed teeth acupuncture anesthesiashowed the best effect

but was poor in treatment of impacted teeth and non-vital teeth.The location of the treated tooth has some influence on the AA effect.In general

it is greter orthe anterior parts

more effective in the maxillary region

and most effective when dealing with mo-lars.The AA induction time shows no influence on the AA effect(P<0.05).No relation was found between the operative duration(average 3 min)and the AA effect.AA effect in Ⅰ and Ⅱ grade was 81.5% Ⅲ and Ⅳ grade 18.42%(number of teeth).Complica-tions occurred in 10 cases(3.3%).It is pointed out that a reduction of the induction time does not bring about a better AAeffects.The need to find out AA-“point” which ould bring about better effect for the lower molars isstressed.Before the AA-effect can not be enhanced its selective use in acute inflammations

impactedteeth and non-vital teeth should be made with care.The author believes that the apparatus having its better analgesic effects in tooth extraction deser-ves of a wider use.