Porosity of maxillofacial silicone elastomers and microleakage pattern of the commercially pure Ti-silicone elastomer interface after hydrothermal cycling.
Statement of problem Delamination of the maxillofacial silicone elastomer away from the commercially pure titanium (cpTi)-encapsulated magnets affects the long-term performance of the facial restoration. Purpose The purposes of this in vitro study were to investigate the interfacial microleakage pat...
| Publicado en: | Journal of Prosthetic Dentistry Vol. 116; no. 6; pp. 937 - 943 |
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| Autores principales: | , , |
| Formato: | pictorial research Journal Article |
| Publicado: |
Elsevier B.V.
Dec2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=119773310&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 119773310 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00223913 1ZB jtl: Journal of Prosthetic Dentistry issn: 00223913 maglogo: N pubinfo: dt: Dec2016 vid: 116 iid: 6 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 119773310 119773310 119773310 10.1016/j.prosdent.2016.05.008 119773310 ppf: 937 ppct: 6 formats: tig: atl: Porosity of maxillofacial silicone elastomers and microleakage pattern of the commercially pure Ti-silicone elastomer interface after hydrothermal cycling. aug: au: Artopoulou, Ioli Ioanna Chambers, Mark S. Eliades, George affil: Lecturer, Department of Prosthodontics, National and Kapodistrian University of Athens, School of Dentistry, Athens, Greece sug: subj: Maxillofacial Prosthesis Methods Elastomers Human In Vitro Studies Two-Way Analysis of Variance Post Hoc Analysis ab: Statement of problem Delamination of the maxillofacial silicone elastomer away from the commercially pure titanium (cpTi)-encapsulated magnets affects the long-term performance of the facial restoration. Purpose The purposes of this in vitro study were to investigate the interfacial microleakage patterns of 2 maxillofacial silicone elastomers with cpTi when 3 different primers were used and to evaluate the porosity of the 2 elastomers tested. Material and methods To test the interfacial microleakage patterns of the 2 elastomers MDX4-4210 (EL1) and A-2006 (EL2) with cpTi when 3 metal primers, A-304 (PR1), A-320 bonding enhancer (PR2), Super-Bond C&B monomer (PR3), and ethyl-cyanoacrylate (Super Glue) were used, the bonded interfaces were observed using reflected light microscopy, and the percentage of the linear extent of leakage along the interface (%microleakage) was measured. High-resolution x-ray computed microtomography scanning was used to investigate the percentage of void volume fraction (%VF) for both silicone EL1 and EL2. The data were analyzed with 2-way ANOVA and post hoc tests (α=.05). Results No statistically significant differences were found among the percentages of PR1, PR2, and PR3 microleakage, whereas ethyl-cyanoacrylate showed a statistically significant higher percentage of microleakage than either of the silicone elastomers ( P <.001). EL1 medical grade elastomer groups have always had a statistically significantly higher percentage of microleakage than the EL2 platinum silicone elastomer groups ( P <.001). For both elastomers, no statistically significant differences were found in %VF ( P =.056). Conclusions Differences in mechanical properties, chemical composition, and manipulations during handling of the maxillofacial silicone elastomers can affect the linear microleakage along the cpTi-silicone elastomer bonding interface and the porosity of the silicone elastomer. pubtype: Academic Journal doctype: pictorial research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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