Table 3.

Risk of bias tool (adapted and modified from [26]).

Ref	Sample Fabrication Technique	Sample Size	Sample Allocation or Concealment	Sample Power Calculation	Materials Testing Standards		Blinding of Operator	Objective/Finding Mentioned	Risk of Bias
[28]	1	0	2	2	0		2	0	Moderate
[29]	0	0	2	2	0		2	0	Moderate
[30]	1	0	2	2	2		2	0	High
[31]	0	0	2	2	0		2	0	Moderate
[32]	0	0	2	2	0		2	0	Moderate
[33]	0	0	2	0	0		2	0	Low
[34]	1	1	2	2	2		2	0	High
[35]	1	0	2	2	0		2	0	Moderate
[36]	1	0	2	2	2		2	0	Moderate
[37]	0	0	2	2	0		2	0	Moderate
[38]	0	0	2	2	0		2	0	Moderate
[39]	0	0	1	2	2		2	0	Moderate
[40]	0	0	2	2	0		2	0	Moderate
[41]	0	0	2	2	0		2	0	Moderate
[42]	1	2	2	2	2		2	0	High
[43]	0	0	2	0	2		2	0	Moderate
[44]	1	0	2	2	0		2	0	Moderate
[45]	0	0	2	2	0		2	0	Moderate
[46]	1	0	0	2	0		2	0	Moderate
[47]	1	1	2	2	2		2	0	High
[48]	0	0	2	2	0		2	0	Moderate
[49]	1	0	2	2	2		2	0	Moderate
[50]	1	0	2	2	0		2	0	Moderate
[51]	0	0	2	2	0		2	0	Moderate
[52]	0	0	2	2	2		2	0	Moderate
[53]	0	0	2	2	0		2	0	Moderate
[54]	0	0	2	2	2		2	0	Moderate
[55]	0	0	2	2	0		2	0	Moderate
[56]	0	0	2	2	0		2	0	Moderate