Evaluation of radiopacity and discriminability of various fiber reinforced composite posts.
10.5395/JKACD.2010.35.3.188
- Author:
Eun Hye LEE
1
;
Hang Moon CHOI
;
Se Hee PARK
;
Jin Woo KIM
;
Kyung Mo CHO
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea. drbozon@gwnu.ac.kr
- Publication Type:Original Article
- Keywords:
Radiopacity;
FRC-post;
Discriminability;
Digital sensor;
Aluminum step-wedge;
mm Al equivalent
- MeSH:
Acrylic Resins;
Aluminum;
Composite Resins;
Dentin;
General Practitioners;
Humans;
Incisor;
Mandible;
Polyurethanes;
Resin Cements;
Surveys and Questionnaires
- From:Journal of Korean Academy of Conservative Dentistry
2010;35(3):188-197
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to compare radiopacity and radiographic discriminability of various FRC-Posts. Six FRC-Posts were investigated ; 1) FRC Postec Plus (Ivoclar Vivadent AG, Schaan, Liechtenstein), 2) Snowlight (Carbotech, Lewis center, OH, USA), 3) Dentin Post (Komet Brasseler, Lamgo, Germany), 4) Rely-X Fiber Post (3M ESPE, St.paul, MN, USA), 5) D.T.-Light Post (BISCO, Schaumburg, IL,USA), 6) Luxapost (DMG, Hamburg, Germany) The radiographs of each post with a reference 1 mm / 2 mm aluminum step-wedge was taken using digital sensor. The optical density were calculated by gray value of 10 x 10 pixel and compared in mm Al equivalent at five points. Six maxillary incisors of similar radiopacity were used. Radiographs of posts in Mx. incisors of lingual side of dry mandible were taken. We showed radiographs and asked the questionnaire to 3 radiologists, 3 endodontists, 3 general practitioners. The questionnaire was comprised of choices of the highest, lowest radiopaque individual post and the choices of best discriminable post at apical, coronal area. The following results were obtained. 1. Each post system showed various radiopacity. 2. There was change of discriminability between each post and simulated specimens regardless of examiner. Although each post showed various radiopacity, the difference of radiopacity did not affect on discriminability.
