Influence of cast surface finishing process on metal-ceramic bond strength
| Autor: | Denis Vojvodić,, Zdravko Schauperl,, Martina Lauš-Šošić,, Ketij Mehulić,, Sanja Štefančić |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Medicinski Glasnik, Vol 6, Iss 2, Pp 235-242 (2009) |
| Druh dokumentu: | article |
| ISSN: | 1840-0132 1840-2445 |
| Popis: | Aim To investigate the influence of different cast surface finishingprocess on metal-ceramics bond strength.Methods Six Co-Cr alloy sample groups were cast (Wirobond C,BEGO, Bremen, Germany) and randomly selected for use in oneof the six different final processing of the casting surface (oxidation,sandblasting with 110 and 250 µm Al2O3, bonding agent,hydrochloric acid solution) prior to application of feldspathic ceramic(Duceram Kiss, DeguDent, Hanau-Wolfgang, Germany).The testing was carried out with a tensile testing machine (LRXwith Nexygen software, Lloyd Instr., Fareham, UK) (ISO 9693).Results The highest force (66.902 N) for the separation of ceramicsmeasured with the sample sandblasted with 250µm Al2O3,oxidised and repeatedly sandblasted with 250 µm, and the lowestforce (36.260 N) with the sample treated with hydrochloric acidsolution. With all sample groups except the group with the bondingagent (cohesive fracture), an adhesive fracture of the mediumand an adhesive-cohesive fracture of the peripheral part of thefracture surface were observed. The oxidation, prolonged oxidationand the bonding agent do not influence the bond strength ofthe tested metal-ceramic system.Conclusion Different casting surface treatments have an importantrole on the bond strength of the ceramic-metal interface. |
| Databáze: | Directory of Open Access Journals |
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