Comparison 1. HBO versus no HBO.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Dichotomous outcomes	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
1.1 Prosthetic failure	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Implant failures	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.3 Preimplantation complications	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.4 Postimplantation complications	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2 Overall denture satisfaction	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected