title: Radiopacity of an endodontic core material.
abstract: OBJECTIVE
  To evaluate and compare the relative density values of a new endodontic core material (Resilon) and conventional gutta-percha.
  
  
  METHODS
  15 Resilon and gutta-percha discs for testing radiopacity were prepared by first coiling three size 35 cones. The coiled material was evenly compressed into the well of a brass mold 10 mm in diameter and a depth of 1 mm. All radiographs were taken on No. 4 ultra-speed dental film. The radiopacity of Resilon, gutta-percha, and dentin slices were then measured with a digital transmission densitometer.
  
  
  RESULTS
  The mean radiopacities of Resilon and gutta-percha coiled discs were 4.06 and 7.21 mm of aluminum equivalence respectively, which exceeded the minimal requirement of 3 mm. Both tested materials had lower radiopacity values than dentin. There were highly significant differences in radiopacity values among the tested specimens (P < 0.01). Additionally, the mean radiopacity values in root canals were 5.50 and 8.52 mm Al for Resilon and gutta-percha, respectively (P < 0.01).
authors: Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Ondokuz Mayis University, 55139 Kurupelit-Samsun, Turkey. bodrumlu@omu.edu.tr
authors: Emre
authors: E
authors: Bodrumlu
authors: Kahraman
authors: K
authors: Gungor
mesh_terms: D015502:Absorptiometry, Photon; D003287:Contrast Media; D003804:Dentin / Q000000981:diagnostic imaging; D006171:Gutta-Percha; D006801:Humans; D008422:Materials Testing; D011176:Post and Core Technique; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D014092:Tooth Root / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media; D012387:Root Canal Filling Materials; C486892:resilon sealer; D006171:Gutta-Percha