Junaid, Saman, et al. “Frequency of Pain in Teeth With Irreversible Pulpitis After Single Visit Root Canal Treatment Using Cryotherapy: Intracanal Cryotherapy”. Pakistan Armed Forces Medical Journal, vol. 72, no. 6, Jan. 2023, pp. 2099-02, doi:10.51253/pafmj.v72i6.4295.