A descriptive study of the radiographic density of implant restorative cements.

摘要: Statement of problem Cementation implant prostheses is a common practice. Excess cement in the gingival sulcus may harm periodontal tissues. Identification excess be possible with use radiographs if has sufficient radiopacity. Purpose The purpose this study was to compare radiographic density different cements used for prostheses. Material and methods Eight were compared: TempBond Original (TBO), NE (TBN), Fleck's (FL), Dycal (DY), RelyX Unicem (RXU), Luting (RXL), Improv (IM), Premier Implant Cement (PIC). Specimen disks, 2 mm thickness, radiographed. Images made using photostimulable phosphor (PSP) plates standardized exposure values. average grey level central area each specimen disk selected measured pixels software analysis program, ImageTool, providing an value representative radiodensity 8 cements. determined values test materials, which recorded compared standard aluminum step wedge. An equivalent thickness millimeters calculated best straight line fit estimates. To assess contrast effects by varying settings, second experiment 1-mm-thick specimens radiographed at both 60 kVp 70 conducted. PSP comparison wedge, same program. Results highest zinc (TBO, TBN, FL), 1-mm detectable 60- 70-kVp settings. A lower DY, indicative cements, but higher than RXL RXU. implant-specific had lowest IM could only detected 2-mm-thick sections equivalence previously mentioned PIC not radiographically either or 2-mm thicknesses Conclusions Some types commonly cementation implant-supported have poor following examination.