Which of the following is not a medicated sealer:

The basic ingredient of the medicated sealer is zinc oxide, but usually they contain other contraindicated ingredients, including paraformaldehyde. Sargenti advocated the use of a sealer containing 6.5% paraformaldehyde and lead that was marketed as N2 and later as RC2B. Lead is toxic to the humans and adds little benefit to the property of the cement. Paraformaldehyde is highly irritating and destructive to tissues. Other paraformaldehyde sealers include SPAD and Reibler’s paste. Endomethasone (Septodent) contains a corticosteroid. Corticosteroids reduce postoperative pain, but the claim is still unproved. The role of medicated sealer in endodontics is controversial and is not clinically recommended.