患儿，男，6岁。下乳切牙III度松动。拔除乳切牙行表面麻醉的首选药物是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29986' and id < 2429963 and id<>'2429963' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29986' and id > 2429963 and id<>'2429963' order by id asc limit 5