Table 2.

Main reasons for exclusion after full-text screening.

Main Reason for Exclusion	No.	References
Language	3	[49,50,51]
In vitro study	2	[52,53]
Ectopic bone formation model	4	[54,55,56,57]
Use of compromised animals	4	[58,59,60,61]
Absence of a control group	13	[62,63,64,65,66,67,68,69,70,71,72,73,74]
Control group other than empty defect and/or autogenous bone and/or deproteinized bovine-derived bone	20	[75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94]
Unclear sample size	5	[95,96,97,98,99]
Less than 6 animals per each test group	4	[100,101,102,103]
Non-critical size bone defect	11	[104,105,106,107,108,109,110,111,112,113,114]