RADIOGRAPHIC DETECTION OF OVERHANGS FORMED BY RESIN COMPOSITE LUTING AGENTS

Citation
B. Orourke et al., RADIOGRAPHIC DETECTION OF OVERHANGS FORMED BY RESIN COMPOSITE LUTING AGENTS, Journal of dentistry, 23(6), 1995, pp. 353-357
Citations number
9
Categorie Soggetti
Dentistry,Oral Surgery & Medicine
Journal title
ISSN journal
03005712
Volume
23
Issue
6
Year of publication
1995
Pages
353 - 357
Database
ISI
SICI code
0300-5712(1995)23:6<353:RDOOFB>2.0.ZU;2-R
Abstract
Objectives: An in vitro model was used to assess the ability of standa rd radiographic techniques to detect marginal overhangs of resin compo site luting agents beside porcelain and resin composite inlays. Method s: The radiodensity of five commercially available luting resins was d etermined using ISO 4049 methodology, For four of the luting agents, a rtificial overhangs (0.5 x 0.5 x 2 mm) were created at the cervical ma rgin of standard resin composite and porcelain inlays. Radiographs wer e recorded, using wax as a tissue equivalent, and the overhangs reduce d incrementally in depth by 0.5 mm with serial images at each depth. T he images were assessed in random sequence by three observers. Results : There were significant differences between the radiopacity of the lu ting resins. These correlated well with the ability of the observers t o detect marginal overhangs adjacent to resin composite inlays. Conclu sions: Even with the most radiopaque luting material, a substantial ma rginal ledge could not be detected in association with a radiopaque re sin composite inlay. The threshold for detection of the overhang was l ower when using a radiolucent porcelain inlay.