title: Effect of Calcium Hydroxide, Chlorhexidine Digluconate and Camphorated Monochlorophenol on the Sealing Ability of Biodentine Apical Plug.
abstract: BACKGROUND
  Teeth with immature apex are managed by establishing an apical plug using various materials and techniques. However, the use of previously placed intracanal medicament may affect the sealing ability of permanent filling material used as an apical plug.
  
  
  OBJECTIVE
  To evaluate the effect of removal of previously placed Calcium Hydroxide, Chlorhexidine Digluconate and Camphorated Monochlorophenol as an intracanal medicament on the sealing ability of the Biodentine as an apical plug.
  
  
  METHODS
  A total of 72 recently extracted human permanent teeth with single root were selected and stored in saline at room temperature. The crown portion of each tooth was removed at the level of cemento enamel junction; 14mm root length was taken as standard length. All the roots were submerged in 20% sulphuric acid up to 3 mm from the apex, for four days for root resorption. One sample was cut longitudinally to look for root resorption under stereo microscope. The canal preparation was done; the roots were kept in moist gauze after instrumentation. A total of 71 roots were randomly divided into three groups. GROUP 1:Calcium hydroxide paste, GROUP 2: Chlorhexidine digluconate, GROUP 3: Camphorated Monochlorophenol (CMCP). The medicaments were removed with stainless steel hand files and 0.5% sodium hypochlorite irrigation. After removal of medicament Biodentine was placed in apical third of resorbed roots and the remaining portion of the canals was filled with gutta-percha. All the 71 roots were analysed with fluid filtration method for evaluating microleakage.
  
  
  RESULTS
  Comparing all the three groups statistically there was no significant difference. The mean values were found more for group 1 followed by group 2 & 3.
  
  
  CONCLUSIONS
  All the groups showed microleakage. Calcium hydroxide showed the maximum microleakage followed by Chlorhexidine digluconate and least with CMCP.
authors: Senior Lecturer, Department of Conservative Dentistry & Endodontics, Mahatma Gandhi Dental College & Hospital , Jaipur, Rajasthan, India .
authors: Aastha Arora
authors: AA
authors: Srivastava
authors: Senior Lecturer, Department of Conservative Dentistry & Endodontics, Mahatma Gandhi Dental College & Hospital , Jaipur, Rajasthan, India .
authors: Harshit
authors: H
authors: Srivastava
authors: Reader, Department of Conservative Dentistry & Endodontics, Mahatma Gandhi Dental College & Hospital , Jaipur, Rajasthan, India .
authors: Ashwini B
authors: AB
authors: Prasad
authors: Professor and Head, Department of Conservative Dentistry & Endodontics, Mahatma Gandhi Dental College & Hospital , Jaipur, Rajasthan, India .
authors: Deepak
authors: D
authors: Raisingani
authors: Senior Lecturer, Department of Conservative Dentistry & Endodontics, Mahatma Gandhi Dental College & Hospital , Jaipur, Rajasthan, India .
authors: Dileep
authors: D
authors: Soni
keywords: Fluid filtration method; Intracanal medicament; Microleakage; Open apex