Document Classification

Section Type: METHODS

Text: After biomechanical preparation of 75 teeth, they were randomly divided into nine groups according to the intracanal medicament and the coronal seal with'Intermediate Restorative Material'(IRM) as follows : (i) 10 teeth medicated with CG, coronally unsealed ; (ii) 10 teeth medicated with CaOH2, coronally unsealed ; (iii) 10 teeth medicated with CaOH2 + CG, coronally unsealed ; (iv) 10 teeth medicated with CG + coronal seal ; (v) 10 teeth medicated with CaOH2 + coronal seal ; (vi) 10 teeth medicated with CG + CaOH2 + coronal seal ; (vii) 10 teeth without intracanal medicament and coronally sealed ; (viii) 5 teeth without intracanal medicament and coronally unsealed, used as the positive control group (PC) ; (ix) 5 teeth with intact crowns used as the negative control group (NC).