Fig. 4From: Relationship between the difference in electric pulp test values and the diagnostic type of pulpitisRisk-adjusted, restricted cubic splines with 4 knots of odds ratio for SIRP and the difference in the EPT values. The X axis shows the difference in EPT values; the Y axis shows the odds ratio for SIRP. The black line represents odds ratio for SIRP; the grey area represents the 95% confidence interval. SIRP symptomatic irreversible pulpitis, EPT electric pulp testBack to article page