title: Comparative evaluation of the fracture resistance of teeth prepared with rotary system, filled with single cone gutta-percha and laterally condensed with zinc oxide eugenol and resin based (AH26) sealers to that of Resilon.
abstract: OBJECTIVE
  To compare the fracture resistance of teeth prepared with rotary system and filled with single cone guttapercha followed by lateral condensation with different sealers like zinc oxide eugenol and resin based (AH26) to that of resilon.
  
  
  METHODS
  A total number of 70 extracted intact human permanent maxillary incisors were selected. All prepared samples were divided into one control group (n = 10) and three experimental groups (n = 20 per group). Group 1 control. This group received no obturation; the root canal opening was sealed with a temporary filling material (Cavit, Premier Dental Products, Plymouth Meeting, PA) Group 2: Gutta-Percha and zinc oxide Eugenol sealer. Group 3: Gutta-Percha and AH26 sealer. (DiaDent, Korea) dipped in AH26 sealer. Group 4: Resilon cones and RealSeal Resin Sealer. Obturation was accomplished using a 0.06 taper size 40 gutta-percha master point. All the root samples were stored in 100% humidity at 37 °C for 2 weeks to allow the sealer to set completely. The root samples were then prepared for mechanical testing and the data was recorded and analyzed statistically.
  
  
  RESULTS
  One-way ANOVA and Post hoc test (Duncan Multiple range test) were employed to determine possible statistical variation among the groups tested in this study. The force for group 2 was significantly greater than that for the control group 1 (no obturation).The force for group 3 was significantly greater than that for group 2. The force for group 4 was significantly greater than that for group 3. All other groupwise comparisons were not significant at 5% level. Group 4 seemed to have the greatest force among the three groups of interest in the study.
  
  
  CONCLUSIONS
  Root canals filled with Resilon increased the in vitro resistance of single canal extracted teeth compared to other experimental groups. The mean fracture resistance value for the experimental groups in ascending order was as follows: Root canals instrumented but not filled, filled with gutta-percha and zinc oxide eugenol sealer, filled with gutta-percha and AH26 sealer and filled with Resilon.
  
  
  CONCLUSIONS
  Resilon is a promising material for reinforcement of endodontically treated teeth.
authors: Department of Conservative and Endodontics, Rajas Dental College, Tirunelveli 627105, Tamil Nadu, India. kashi_nathan@hotmail.com
authors: P Kashi
authors: PK
authors: Vishwanathan
authors: Sabir
authors: S
authors: Muliyar
authors: Prakash
authors: P
authors: Chavan
authors: P Manoranjan
authors: PM
authors: Reddy
authors: T Praveen Kumar
authors: TP
authors: Reddy
authors: Sanjay
authors: S
authors: Nilawar
mesh_terms: D001729:Bismuth / Q000627:therapeutic use; D002133:Calcium Sulfate / Q000627:therapeutic use; D003188:Composite Resins / Q000627:therapeutic use; D003738:Dental Cements / Q000627:therapeutic use; D003799:Dental Stress Analysis / Q000295:instrumentation; D004853:Epoxy Resins / Q000627:therapeutic use; D006171:Gutta-Percha / Q000627:therapeutic use*; D006801:Humans; D006813:Humidity; D007180:Incisor / Q000503:physiopathology; D008422:Materials Testing; D011145:Polyvinyls / Q000627:therapeutic use; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D012834:Silver / Q000627:therapeutic use; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000627:therapeutic use; D014082:Tooth Fractures / Q000503:physiopathology*; D019553:Tooth, Nonvital / Q000503:physiopathology*; D015034:Zinc Oxide / Q000627:therapeutic use; D015035:Zinc Oxide-Eugenol Cement / Q000627:therapeutic use
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D004853:Epoxy Resins; D011145:Polyvinyls; C511498:Real Seal composite resin; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C486892:resilon sealer; D012834:Silver; C028044:epoxy resin AH-26; C020872:Cavit; D006171:Gutta-Percha; D014025:Titanium; D015034:Zinc Oxide; D001729:Bismuth; D002133:Calcium Sulfate