Biofilm Formation andMultiple Antibiotic Resistance Index of Bacteria Isolates from Saliva, Teeth and Necrotic Roots Canals of Teeth of Dental Patients

Abstract

Globally, antibiotic resistance among oral microbiota has constituted an increasing health challenge, and limited information regarding such resistance is available. This study was designed to isolate both aerobic and anaerobic bacteria from different sources of oral samples and screen the isolates for biofilm forming and antibiotics resistance abilities. A total of 72 samples were collected, 21, 31 and 20 were from saliva, teeth and necrotic roots canals respectively. In general, among 267 total isolates, 16.2% were identified as Enterococcus sp. and it was considered as the most prevalence genus, followed by Streptococcus sp.