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}}</ref> Although Kirya & Wirthman called the procedure "painless", that is an exaggeration. DPNB does block the dorsal nerves, but does not block the ventral nerves, so at best it only reduces the extreme pain of circumcision somewhat. Lander et al. (1997) did a comparison study of [[EMLA]] ® cream topical anesthetic,<ref>{{REFweb

}}</ref> Dorsal Penile Ring Block, and Ring Block. DPNB was more effective than [[EMLA]] ® cream, but less effective than [[ring block]] local anesthesia.<ref name="lander1997">{{REFjournal