Marginal Discrepancy of Cast Copings to Abutments with Three Different Luting Agents

View/ Open
Descargar
(application/pdf: 2.256Mb)
(application/pdf: 2.256Mb)
Date
2019Author(s)
Rosas Díaz, José
Metadata
Show full item recordAbstract
Aim. +e purpose of this study was to evaluate the MD (marginal discrepancy) on the calcinable copings in abutments for
cemented prostheses with three luting agents. Methods. Sixty-four analogs of CeraOne-type abutments (NACONIH code, Titanium
Fix Implant Sytem SP, Brazil) were divided into four groups (n = 16). +e copings were cast and placed on the CeraOne
abutment analogs and cemented with eugenol-free zinc oxide (EfZO) (n = 16), with glass ionomer (GI) (n = 16), and with zinc
phosphate (ZP) (n = 16), and as a control group, there were CeraOne plastic copings (NACOC code, Titanium Fix Implant Sytem
SP, Brazil) (n = 16) which were not cemented with any material. After 24 hours, theMDof the four groups was measured.MDwas
evaluated using a stereoscopic microscope (Leica EZ4 W, Leica Microsystems, Germany) with an increase of ×100. MD was
measured at four predetermined and equidistant sites with respect to the marginal line of the cast adaptation. +e measurement
was made from the distance between the free edge of the cast cylinder and the margin of preparation of the titanium abutment,
with a level of statistical significance of p < 0.05. Results. Of the three fixing agents, the ZP was found to have the highest MD
(53.59 ± 14.21 μm); however, the lowest MD (41.72 ± 9.10 μm) was found in the GI group. +ese differences are statistically
significant at p < 0.001. Conclusions. In summary, according to our results, it was found that ZP cement showed the highest MD
after cementation, followed by the glass ionomer, while EfZO showed the lowest MD.
Collections
The following license files are associated with this item: