Johnson G K, Hlava G L, Kalkwarf K L
Anesth Prog. 1985 Sep-Oct;32(5):202-5.
A double-blind method was used to compare anesthesia duration following intraligamental administration of 1.5% etidocaine with 1:200,000 epinephrine and 2% lidocaine with 1:100,000 epinephrine. Durations of anesthesia in pulpal and soft tissues were monitored following periodontal ligament injections adjacent to the maxillary canines of 20 individuals. Complete pulpal anesthesia was attained in 35% of the teeth injected with etidocaine and in 55% of those receiving lidocaine. Soft tissue anesthesia was consistently achieved. Both pulpal and soft tissue anesthesia were of longer duration following the use of lidocaine solution. These findings suggest that anesthetic duration following periodontal ligament injections is more related to the concentration of vasoconstrictor than to the anesthetic solution employed.
采用双盲法比较了在牙周韧带内注射含1:200,000肾上腺素的1.5%依替卡因和含1:100,000肾上腺素的2%利多卡因后的麻醉持续时间。在20名个体上颌尖牙附近进行牙周韧带注射后，监测牙髓和软组织的麻醉持续时间。注射依替卡因的牙齿中有35%达到了完全牙髓麻醉，接受利多卡因的牙齿中有55%达到了完全牙髓麻醉。软组织麻醉始终能够实现。使用利多卡因溶液后，牙髓和软组织麻醉的持续时间都更长。这些发现表明，牙周韧带注射后的麻醉持续时间与血管收缩剂的浓度比与所用麻醉溶液的关系更大。
