Naslov
Fracture surface analysis of PM CP titanium after ceramic debonding

Autori
Viskić, Josko ; Ćatić, Amir ; Schauperl, Zdravko ; Balog, Martin ; Krizik, Peter ; Mehulić, Ketij

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Book of abstracts 39th Annual Conference of the European Prosthodontics Association / Hubalkova Hana - Prag : Czech Society of Prosthetic Dentistry and Czech Dental Chamber, 2015, 36-36

ISBN
978-80-260-8581-2

Skup
39th Annual Conference of the European Prosthodontics Association

Mjesto i datum
Prag, Češka Republika, 03.09.2015. - 05.09.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
titanium ; powder metallurgy ; low fusing ceramics ; surface treatment

Sažetak
Purpose Bonding of dental ceramics to commercially pure titanium (CP Ti) has always been a challenge. Thick oxide layer formation on the surface of titanium weakens the bond and leads to predominantly adhesive fractures between CP Ti and veneering ceramics. CP Ti manufactured by powder metallurgy (PM) processes has not yet been used in prosthodontics as a method for metal substructure manufacturing. The aim of this study is to evaluate the fracture mode between CP Ti manufactured by PM and veneering ceramics. Materials and Methods 120 samples of CP Ti manufactured by PM were divided into 5 groups according to surface modifications: 1.untreated ; 2.sandblasted (Al2O3) ; 3.applied bonding agent ; 4.sandblasted (Al2O3) and applied bonding agent ; 5.etched with hydrochloric acid. All samples were veneered with low fusing dental ceramics. Each group was divided into 3 subgroups of 8 samples according to veneering ceramics. Surface of the samples was evaluated for fracture mode by XRD analysis before veneering and after debonding. Results XRD analysis of samples analysed before veneering showed pure α-Ti. After debonding only two of the fifteen groups showed traces of ceramics on the surface (cohesive fracture) and the rest showed only presence of α-Ti, β-Ti and different types of titanium oxides (adhesive fracture). Conclusions Fracture mode analysis of veneered CP Ti manufactured by PM shows similar results as conventionally manufactured CP Ti, suggesting the PM Ti material can potentially be used in crown manufacturing. However, further studies involving other methods of fracture mode analysis are necessary to draw definite conclusions.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Dentalna medicina

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