根尖周炎最常见的原因为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31125' and id < 2501629 and id<>'2501629' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31125' and id > 2501629 and id<>'2501629' order by id asc limit 5