The microleakage between alloy and polymeric materials in veneer crowns.
OBJECTIVE
This study investigated the cervical microleakage between a cobalt-chromium (Co-Cr) alloy and four indirect polymeric veneering materials using different adhesive systems.


METHODS
The Co-Cr-based alloy for fixed prosthesis used in this study (Biosil F, Degussa) was veneered with four different polymeric materials: Artglass, Chromasit, Solidex, and Superacryl.


RESULTS
Superacryl produced the highest microleakage score (4 +/- 0.0). The least microleakage at the interface was produced by Artglass (1 +/- 0.816), followed by Chromasit (2 +/- 1.414) and Solidex (2.5 +/- 1.0). Only the differences between Artglass and Superacryl were significant.


CONCLUSIONS
Within the limitations of this in vitro study, cervical microleakage between the coping and the veneer depended on the particular polymeric material used for veneering. Leakage was significantly lower when resin materials were used together with a chemical conditioning system (ie, Artglass/Siloc).
Department of Dental Materials and Prosthesis Technology, University School of Dentistry Timişoara, Romania. sorin26@rdslink.ro
Sorin
S
Lakatos
Mihai
M
Romînu
Meda
M
Negruţiu
Zeno
Z
Floriţa
D000704:Analysis of Variance; D002858:Chromium Alloys / Q000009:adverse effects*; D003188:Composite Resins; D003442:Crowns / Q000009:adverse effects*; D003763:Dental Leakage / Q000209:etiology*; D003801:Dental Veneers / Q000009:adverse effects*; D003830:Denture, Partial, Fixed / Q000009:adverse effects; D005899:Glass Ionomer Cements; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D011108:Polymers / Q000009:adverse effects*; D019904:Polymethyl Methacrylate; D012823:Silicate Cement; D018709:Statistics, Nonparametric; D019237:Tooth Cervix; D014520:Urethane
D002858:Chromium Alloys; D003188:Composite Resins; D005899:Glass Ionomer Cements; D008689:Methacrylates; D011108:Polymers; C113676:Solidex; C113531:chromasit; C111282:dental polyglass; D012823:Silicate Cement; D014520:Urethane; D019904:Polymethyl Methacrylate