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Mean and 95% confidence interval values for HbA1c, TC, LDL, TRG, WC and BMI as measured at pre‐treatment time point in control, non‐surgical root canal re‐treatment (Re‐RCT) and periapical surgery (PS); *(p < .05); **(p < .01); ***(p < .001), ****(p < .0001). LDL, low‐density lipoprotein; TC, total cholesterol; TRG, triglycerides.
