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Table 1 Analysis on cases number from the articles (case number)

From: Thorough documentation of the accidental aspiration and ingestion of foreign objects during dental procedure is necessary: review and analysis of 617 cases

  Year Aspiration Ingestion Total
Review from France [7] 1994–2004 44 464 508
Review from Japan [8] 2008–2009 0 11 11
Review from Japan [9] 2006–2010 0 23 23
Review from USA [13] 1992–2002 1 25 26
Case reports 1971–2014 20 29 49
Total number 65 552 617