an ointment, usually caustic, coagulating or cytotoxic, formulated to be applied to the cervix of a tooth for the purpose of obtunding pain from sensitive, exposed cementum or dentin.
de·sen·si·tiz·ing paste
(dē-sensi-tīz-ing pāst) Ointment applied to tooth cervix to diminish pain due to sensitive exposed cementum or dentin.