Comparison of Herbal Agents with Sodium Hypochlorite as Root Canal Irrigant: A Systematic Review of In Vitro Studies

Table 6

Risk of bias assessment.

Author and year	Randomization	Allocation concealment	Blinding	Standardized preparation	Reporting data
Ok et al. 2015 [5]	Unclear (teeth were randomly divided)	High (not mentioned)	High (not mentioned)	Low	Low
Pujar et al. 2011 [11]	Unclear (the samples were divided.)	High (not mentioned)	High (not mentioned)	High (strain not mentioned, irrigation protocol not mentioned, also the type of needle used)	Low
Choudhary et al. 2018 [12]	Low	High (not mentioned)	High (not mentioned)	Low	Low
Sedigh-Shams et al. 2015 [13]	High (not mentioned)	High (not mentioned)	High (not mentioned)	Low	Low
Rosaline et al. 2013 [14]	Unclear (teeth were randomly divided)	High (not mentioned)	High (not mentioned)	High (canal preparation not mentioned, the volume of irrigant used not mentioned, and the type of needle used not mentioned)	Low
Gupta-Wadhwa et al. 2016 [15]	Unclear (samples were randomly divided)	High (not mentioned)	High (not mentioned)	Low	Low
Sharifian et al. 2009 [16]	Unclear (samples were randomly divided)	High (not mentioned)	High (not mentioned)	High (irrigation protocol not mentioned, the volume of irrigant and type of needle used not mentioned)	Low
Divia et al. 2018 [17]	High (not mentioned)	High (not mentioned)	High (not mentioned)	High (irrigation protocol not mentioned, the volume of irrigant, time of irrigation, type of needle used, sample collection, and culture medium were not mentioned)	High
Kumar et al. 2018 [18]	High	High (not mentioned)	High (not mentioned)	Unclear (irrigation protocol not mentioned)	Low