患儿，3岁半，因牙列不齐前来就诊，这一年龄阶段正常颌的特征有

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32249' and id < 2568031 and id<>'2568031' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32249' and id > 2568031 and id<>'2568031' order by id asc limit 5