title: A Comparative Evaluation of Sealing Ability of New MTA Based Sealers with Conventional Resin Based Sealer: An In-vitro Study.
abstract: BACKGROUND
  Root canal obturation is the most important step in the root canal treatment that aims to obtain a complete hermetic seal and to prevent the re-growth of microorganisms in the root canal system. To accomplish this, many endodontic obturation materials and sealers are being used.
  
  
  OBJECTIVE
  To evaluate and compare the apical microleakage of a resin based sealer; Adseal with Mineral Trioxide Aggregate (MTA) based sealers; Pro root MTA and MTA Fillapex.
  
  
  METHODS
  Total 75 extracted human single rooted teeth were taken and decoronated at cemento-enamel junction. The access cavities and biomechanical preparation were performed using endodontic rotary system. The teeth were randomly divided into five groups with n=15; Group I - Gutta-percha and Adseal sealer; Group II - Gutta-percha and MTA Fillapex; Group III- Gutta-percha and Pro root MTA; Group IV- Gutta-percha without sealer (positive control group); Group V- Root canal remained empty (negative control). All the specimens were stored at 37(0)C with 100% humidity for one week. All root surfaces except the apical 2mm were covered with two layers of nail varnish and then immersed in an aqueous solution of 2% methylene blue dye for 72 hours. Roots were longitudinally split using a diamond disk. Linear apical dye penetration was measured under Stereomicroscope at 40X magnification.
  
  
  METHODS
  The data obtained was subjected to statistical analysis using paried t-test, ANOVA for interclass comparison, with SPSS statistical software (version 20.0).
  
  
  RESULTS
  The intraobserver reliability was found to be insignificant in each of the triplicate study of all the three study samples. MTA Fillapex group showed maxmium apical microleakage followed by Pro root MTA and Adseal sealer.
  
  
  CONCLUSIONS
  The results concluded that Adseal sealer showed minimal dye penetration followed by Pro root MTA and MTA Fillapex. Thus, concluding that Adseal sealer is better in apical sealing than Pro root MTA and MTA Fillapex.
authors.affiliation: Postgraduate Student, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Lovejeet
authors.initials: L
authors.lastname: Ahuja
authors.affiliation: Professor and Head, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Purshottam
authors.initials: P
authors.lastname: Jasuja
authors.affiliation: Reader, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Kanika Gupta
authors.initials: KG
authors.lastname: Verma
authors.affiliation: Reader, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Suruchi
authors.initials: S
authors.lastname: Juneja
authors.affiliation: Senior Lecturer, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Aditi
authors.initials: A
authors.lastname: Mathur
authors.affiliation: Postgraduate Student, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Rashmeet
authors.initials: R
authors.lastname: Walia
authors.affiliation: Postgraduate Student, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Ashish
authors.initials: A
authors.lastname: Kakkar
authors.affiliation: Postgraduate Student, Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute , Sri Ganganagar, Rajasthan, India .
authors.forename: Metashi
authors.initials: M
authors.lastname: Singla
keywords: Adseal sealer; Apical microleakage; Dye penetration; MTA Fillapex; Pro root MTA