title: A Comparative Study of the Quality of Apical Seal in Resilon/Epiphany SE Following Intra canal Irrigation With 17% EDTA, 10% Citric Acid, And MTAD as Final Irrigants - A Dye Leakage Study Under Vacuum.
abstract: BACKGROUND
  Adequate apical sealing ability of the root canal filling material is an essential requisite for a successful endodontic therapy. Various endodontic irrigants are used for the removal of smear layer before obturating with a solid core material, thereby, reducing microleakage and improving apical seal. Resilon, a synthetic material was developed as an alternative to replace the conventional gutta-percha (standard root canal filling material) and traditional sealers for the obturation of endodontically treated teeth.
  
  
  OBJECTIVE
  To evaluate and compare in-vitro, the post obturation apical seal obtained with Resilon /Epiphany SE (Self Etch) sealer following irrigation with 17% Ethylenediamine Tetra-Acetic Acid (EDTA), 10% citric acid, and MTAD (a mixture of doxycycline, citric acid, and a detergent, Tween 80), as final irrigants in combination with Sodium hypochlorite (NaOCl) using dye leakage under vacuum method.
  
  
  METHODS
  Fifty five single rooted human maxillary central incisors were subjected to root canal instrumentation. Based on the final irrigation solution, samples were divided into three experimental groups (n=15); (I) 17% EDTA + 1.3% NaOCl, (II) 10% citric acid + 1.3% NaOCl, (III) MTAD + 1.3% NaOCl and two control groups (positive and negative) with 0.9% normal saline as a final irrigant. The samples were obturated with resilon/epiphany SE sealer according to manufacturer instructions and placed in 2% rhodamine B dye solution under vacuum pressure for 30 minutes and allowed to remain in the dye for seven days. All samples were then longitudinally split and examined for dye leakage under stereomicroscope and the data were statistically analysed using one-way ANOVA and post hoc tukey test.
  
  
  RESULTS
  Statistically significant difference (p=0.001) was observed in the mean apical leakage between the experimental and the control groups. However, there was no significant difference (p>0.05) observed in the mean apical leakage amongst the three experimental groups.
  
  
  CONCLUSIONS
  17% EDTA, 10% citric acid, and MTAD were equally effective in achieving the post-obturation apical seal with resilon/epiphany SE sealer when used as a final irrigant in combination with NaOCl.
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, SRM Dental College and Hospital , Ramapuram, Chennai, Tamil Nadu, India .
authors.forename: Saravana Karthikeyan
authors.initials: SK
authors.lastname: Balasubramanian
authors.affiliation: Professor, Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University , Manipal, Karnataka, India .
authors.forename: Vidya
authors.initials: V
authors.lastname: Saraswathi
authors.affiliation: Professor, Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University , Manipal, Karnataka, India .
authors.forename: Nidambur Vasudev
authors.initials: NV
authors.lastname: Ballal
authors.affiliation: Professor, Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University , Manipal, Karnataka, India .
authors.forename: Shashi Rashmi
authors.initials: SR
authors.lastname: Acharya
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, Vivekanandha Dental College and Hospital , Thiruchengode, Tamil Nadu, India .
authors.forename: J Sivakumar
authors.initials: JS
authors.lastname: Sampath
authors.affiliation: Dental Officer, 336 Field Hospital , C/O 56 APO, Saugor, India .
authors.forename: Sandeep
authors.initials: S
authors.lastname: Singh
keywords: Dye penetration; Microleakage; Root canal filling; Secondary monoblock; Smear layer; Sodium hypochlorite