The Journal of the American Dental Association
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Randomized Controlled Trial Comparative Study Clinical Trial
Injection pain: comparison of three mandibular block techniques and modulation by nitrous oxide:oxygen.
The authors conducted this study to compare the pain on injection of the three mandibular block techniques and to determine the effect that the delivery of nitrous oxide:oxygen, or N2O:O2, had on this pain. ⋯ The decision to select one of the three mandibular block techniques should be based on factors other than pain on injection. N2O:O2 reduces pain on the first injection only.