Abstract: PURPOSE: To compare the clinical effect of 2 methods for acute pulpitis in the night emergency. METHODS: Two hundred and twenty-three patients with acute pulpitis were randomly divided into experimental group (107 cases) and control group (109 cases). Patients in the experimental group was enclosed formaldehyde cresol (FC) with CAVITON-GC after removal of crown pulp, while patients in the control group was treated with open drainage. Pain releasing effect was evaluated and analyzed 2 days after treatment.The data were analysed by t test and χ² test with SPSS19.0 software package. RESULTS: The average pain index of the experimental group was 1.23, which was lower than that of the control group (3.58), the difference was significant (P<0.05). The treatment efficiency was 93.46% in the experimental group, significantly higher than that in the control group (77.98% , P<0.05). CONCLUSIONS: Treatment in the experimental group is more effective to relieve pain than simple drainage in the control group.

Key words: Acute pulpitis, Open pulp and drainage, Clinical effect