Cryotherapy Versus Dexamethasone on Postoperative Pain in Permanent Mandibular Molars

The goal of this clinical trial was to evaluate cryotherapy versus dexamethasone on the intensity of postoperative pain in root canal treatment procedures in mandibular first molar teeth with symptomatic irreversible pulpitis. The main question it aims to answer is: * Does controlled irrigation with cold saline in root canal treatment reduce the severity of postoperative pain? * Does controlled irrigation with dexamethasone in root canal treatment reduce the severity of postoperative pain? In the cryotherapy group, unlike the control and dexamethasone group, the root canals were irrigated with 2 °C salin solution in final irrigation. In the dexamethasone group, unlike the control and cryotherapy group, the root canals were irrigated with 1 mL dexamethasone solution in final irrigation.