Table 2.

Main findings of the included studies

	Group A Full thickness	Group B Partial thickness
Guindi1
Number	15	15
Pre-operative gap	30.15 ± 5.42	30.22 ± 6.49
Post-operative gap	20.44 ± 5.34	10.74 ± 4.29
Reduction in gap	9.71	19.48
Graft take	14 (93.33%)	14 (93.33%)
Atef4
Number	28	29
Pre-operative gap	21.3 ± 3.72	22.07 ± 2.62
Post-operative gap	10.44 ± 2.21	10.28 ± 1.65
Reduction in gap	10.85	11.79
Graft take	27 (96.4%)	28 (96.5%)
Sadek7
Number	15	15
Pre-operative gap	43.6 ± 11.8	40.5 ± 8.8
Post-operative gap	31.9 ± 8.9	27.3 ± 4.9
Reduction in gap	11.7	13.2
Graft take	14 (93.8%)	14 (93.8%)
Mokbel8
Number	30	30
Pre-operative gap	29.3 ± 2.55	29.7 ± 2.74
Post-operative gap	13.8 ± 2.40	9.9 ± 2.08
Reduction in gap	15.5	19.8
Graft take	30 (100%)	30 (100%)
Parelkar9
Number	25	25
Pre-operative gap	40.80 ± 7.46	39.40 ± 7.95
Post-operative gap	26.72 ± 8.08	26.40 ± 8.6
Reduction in gap	14.08	13
Graft take	22 (88%)	17 (68%)