Representative Studies on Bacterial Migration

Year	Reference	Comparison	Bacteria Used	Days Taken to Reach Apex
1990	Torabinejad et al	2 x Bacterial Species	S. epidermidis P. Vulgaris	10 - 73
1993	Khayat et al	2 x RCF Techniques	Saliva bacteria	2 - 48
1999	Barthel et al	3 x RCF Cements	S. epidermidis	8 - 14
1996	Chailertvanitkul et al	2 x RCF Techniques + Smear Layer	S. sanguis	7 - 86
1997	Chailertvanitkul et al	2 x RCF Cements + 6 Months Storage	P. intermedia	10 - 71
2001	Timpawat et al	3 x RCF Cements	E. faecalis	16 - 30
2002	Jacobson et al	2 x RCF Techniques	S. pneumonia	2 - 72
2002	Carratù et al	2 x RCF Techniques	P. mirabilis + S. epidermidis	13 - 37
2009	Eldeniz & Ørstavik	2 x RCF Techniques + 8 x RCF Cements	S. mutans	2 - 40