患者，男，1岁2个月，仍未见第一颗乳牙 萌出，已排除“无牙畸形”。该发育异常不可能的病因是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32586' and id < 2590757 and id<>'2590757' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32586' and id > 2590757 and id<>'2590757' order by id asc limit 5