Which endodontic sealer shows highest bacterial leakage ?

A study tested six different endodontic sealers. AH Plus, Sealer 26, Epiphany SE, Sealapex, Active GP, Endofill, and two MTA-based sealers - Endo CPM Sealer and MTA Sealer.
Among all of them, MTA based sealers show the highest bacterial leakage as compared to other non MTA based sealers.
Ref. Oliveira ACM, International Endontic Journal DOI: 10.1111/j.1365-2591.2011.01852.x