Influence of surface airborne-particle abrasion and bonding agent application on porcelain bonding to titanium dental alloys fabricated by milling and by selective laser melting

Antanasova, Maja; Kocjan, Andraž; Hočevar, Matej; Jevnikar, Peter

doi:10.1016/j.prosdent.2019.02.011

Cited by 23 publications

(26 citation statements)

References 42 publications

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“…A rough and irregular surface texture is thus created [27,39]. Airborne-particle abrasion than acts by removing the gross surface irregularities, providing an optimized surface texture for wetting of the porcelain [39]. Room-temperature passivation in air following surface airborne-particle abrasion of the SLM titanium resulted in a titanium-ceramic bond that was well above the ISO 9693-1:2012 recommended minimum value of 25 MPa for metal-ceramic systems.…”

Section: Discussionmentioning

confidence: 99%

“…During SLM, isolated powder particles found on the margins of the laser scanning path are partially melted and become attached to the metal framework [37,38]. A rough and irregular surface texture is thus created [27,39]. Airborne-particle abrasion than acts by removing the gross surface irregularities, providing an optimized surface texture for wetting of the porcelain [39].…”

Section: Discussionmentioning

confidence: 99%

“…Room-temperature passivation in air following surface airborne-particle abrasion of the SLM titanium resulted in a titanium-ceramic bond that was well above the ISO 9693-1:2012 recommended minimum value of 25 MPa for metal-ceramic systems. However, the extensive roughness of the pre-oxidized substrates may have inhibited the wetting ability of the porcelain, resulting in a decreased bond strength between the metal and the ceramics [27,39,40]. Thus, pre-oxidation procedures prior to the porcelain's application are not suitable for SLM titanium alloys.…”

Section: Discussionmentioning

confidence: 99%

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Pre-oxidation of selective-laser-melted titanium dental alloy: effects on surface characteristics and porcelain bonding

Antanasova

Kocjan

Abram

et al. 2021

Journal of Adhesion Science and Technology

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The heat treatment of dental alloys prior to porcelain application/ veneering has been proposed as a way to ensure sufficient oxide scale and to promote the porcelain's adherence in porcelainfused-to-metal (PFM) fixed dental prostheses. The present study investigates the relationship between the bond strength of the dental porcelain to selective-laser-melted (SLM) titanium and the temperature of the titanium's pre-oxidation. The SLM Ti-6Al-4V substrates were airborne-particle abraded and either left to passivate in air at room temperature (control) or pre-oxidized in a furnace under vacuum conditions (10 kPa) at temperatures of 300, 600, 750, or 800 C. The surface characteristics were determined using contact profilometry to measure the profile roughness (R a), atomic force microscopy for the surface roughness (S a) and Auger electron spectroscopy for the thickness of the oxide scale. Dental porcelain was applied to the metal substrates and the titaniumceramic bond was assessed according to the ISO standard 9693-1:2012. The metal-ceramic interfaces were analyzed with scanning electron microscopy and energy-dispersive spectroscopy. The R a and S a values showed a strong positive correlation with the preoxidation temperature. The oxide scales covering the titanium surfaces thickened markedly at temperatures of 750 C and above. However, the bond strength was negatively correlated with the pre-oxidation temperature. Room-temperature passivation in air following the airborne-particle abrasion of the SLM titanium resulted in a titanium-ceramic bond that is well above the ISO 9693-1:2012 recommended minimum value for metal-ceramic systems. Thus, no pre-oxidation of SLM titanium frameworks is necessary prior to the application/firing of porcelain.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Pre-oxidation of selective-laser-melted titanium dental alloy: effects on surface characteristics and porcelain bonding

Antanasova

Kocjan

Abram

et al. 2021

Journal of Adhesion Science and Technology

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“…Wykazano, że chropowacenie powierzchni z użyciem mikropiaskarek powoduje polepszenie retencji, pod warunkiem ustalenia odpowiednich parametrów pracy piaskarki. [47][48][49][50]…”

Section: Rodzaje Urządzeń I Zabiegów Stomatologicznych Wykorzystującyunclassified

Abrasive blasting in clinical dentistry – literature review

Szerszeń¹,

Koczwara²,

Mazur³

et al. 2020

Prosthodontics

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“…Moreover, it interacts with the investment material during the casting process, and an alpha-case layer is formed on the surface of the material, which is associated with the absorption of oxygen, hydrogen, and nitrogen, causing low fracture resistance (13). To overcome these problems, PFMs undergo constant modifications in terms of the materials and production techniques used (14).…”

Section: Introductionmentioning

confidence: 99%

The effects of current production techniques on the surface roughness, oxide layer thickness and porcelain bond strength of cobalt-chromium and titanium substructures

Değirmenci

Ersoy

2021

Int Dent Res

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Aim: This study aimed to evaluate the oxide layer, surface roughness, and bond strength with porcelain of cobalt-chromium (Co-Cr) and titanium (Ti) substructures produced using casting, milling and selective laser sintering techniques. Methodology: A total of 180 disc-shaped metal samples with a diameter of 1 cm and a thickness of 3 mm were produced. The samples were divided into six groups (n=15) according to the technique used to produce the metal substructures—casting, milling, and SLS—and the chemical composition of the metal substructure—Co-Cr and Ti. Then roughness averages (Ra) of the sample surfaced were calculated with a contact-type profilometer. Nondestructive energy-dispersive X-ray was performed to ensure that the layer displayed in contrast was the oxide layer, and the average oxide layer thickness was calculated from scanning electron microscope images. Metal-porcelain complexes were subjected to shear bond strength test and failure types were noted. Two-way multivariate analysis of variance (MANOVA) was used to compare oxide layer thickness, surface roughness, and shear bond strength according to the metal and production technique, and Tukey’s honestly significant difference (HSD) test was used for multiple comparisons of the main effects. Results: Two-way MANOVA revealed that the metal and technique used in the substructure production had significant effects on surface roughness, oxide layer thickness and shear bond strength (p < 0.001). Ti groups exhibited thicker oxide layer formation than Co-Cr groups. Low surface roughness values were observed in the milling groups. The highest shear bond strength value (53.8 MPa) was observed in the Co-Cr group produced by casting, while the lowest value (32.2 MPa) was obtained in the Ti group produced by casting. Conclusion: It should be kept in mind that there is no ideal production technique and that the effects of the production technique differ depending on the metal used. How to cite this article: Ünalan Değirmenci B, Ersoy NM. The effects of current production techniques on the surface roughness, oxide layer thickness and porcelain bond strength of cobalt-chromium and titanium substructures. Int Dent Res 2021;11(3):129-39. https://doi.org/10.5577/intdentres.2021.vol11.no3.1 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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Influence of surface airborne-particle abrasion and bonding agent application on porcelain bonding to titanium dental alloys fabricated by milling and by selective laser melting

Cited by 23 publications

References 42 publications

Pre-oxidation of selective-laser-melted titanium dental alloy: effects on surface characteristics and porcelain bonding

Pre-oxidation of selective-laser-melted titanium dental alloy: effects on surface characteristics and porcelain bonding

Abrasive blasting in clinical dentistry – literature review

The effects of current production techniques on the surface roughness, oxide layer thickness and porcelain bond strength of cobalt-chromium and titanium substructures

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