Comparison 3. Different techniques, different materials: single‐stage alginate versus two stage‐two step elastomer.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Oral health‐related quality of life (OHIP‐EDENT score)	2	98	Mean Difference (Random, 95% CI)	0.05 [‐2.37, 2.47]
1.1 Parallel‐arm trial	1	50	Mean Difference (Random, 95% CI)	0.1 [‐2.42, 2.62]
1.2 Cross‐over trial	1	48	Mean Difference (Random, 95% CI)	‐0.5 [‐8.94, 7.94]
2 General satisfaction	2		Mean Difference (Random, 95% CI)	Subtotals only
2.1 At 1 month	1		Mean Difference (Random, 95% CI)	‐6.50 [‐20.08, 7.08]
2.2 At 3 months	1		Mean Difference (Random, 95% CI)	0.0 [‐7.17, 7.17]
2.3 At 6 months	1		Mean Difference (Random, 95% CI)	0.0 [‐8.23, 8.23]
3 Maxillary denture satisfaction at 6 months	2	155	Std. Mean Difference (IV, Random, 95% CI)	‐0.02 [‐0.34, 0.29]
4 Mandibular denture satisfaction at 6 months	2	155	Std. Mean Difference (IV, Random, 95% CI)	0.21 [‐0.11, 0.52]