The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling
Metal-ceramic crowns and bridges provide a stable and aesthetic tooth reconstruction. Hot pressing of veneering ceramics to metal substructure minimizes the formation of pores. Within the oral cavity, prosthetic structures are exposed to thermal stress. The study examines the influence of temperatur...
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2024-12-01
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| author | Ewa Pruszczyńska Zofia Kula Katarzyna Dąbrowska Leszek Klimek |
| author_facet | Ewa Pruszczyńska Zofia Kula Katarzyna Dąbrowska Leszek Klimek |
| author_sort | Ewa Pruszczyńska |
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| description | Metal-ceramic crowns and bridges provide a stable and aesthetic tooth reconstruction. Hot pressing of veneering ceramics to metal substructure minimizes the formation of pores. Within the oral cavity, prosthetic structures are exposed to thermal stress. The study examines the influence of temperature changes on the quality and durability of the metal-ceramic bond using thermocyclic loading. Prior to the ceramic pressing, 40 cylindrical alloy specimens (height: 15 mm, diameter: 7 mm) were treated with abrasive blasting using Al<sub>2</sub>O<sub>3</sub> (250 µm) or SiC (250 µm). They were divided into four groups: two control groups (sandblasted with Al<sub>2</sub>O<sub>3</sub> or SiC) and two groups subjected to thermocyclic simulation. The ceramic-to-metal bond strength was measured with a shear test before and after thermocyclic loading. A statistically significant reduction in the bond strength between the metal substructure and the pressed ceramic was found after thermocyclic exposure. The bond strength decreased by 57% for Al<sub>2</sub>O<sub>3</sub> sandblasted specimens and 36% for those sandblasted with SiC, as against the control group. This indicates that thermocycling weakens the bond between the metal alloy and pressed ceramic. The SiC blasting of the cobalt-chromium alloy results in a higher shear bond strength of the material connection after thermocyclic stimulation than the abrasive blasting with Al<sub>2</sub>O<sub>3</sub>. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
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| series | Metals |
| spelling | doaj-art-88ea6820dff84fa8a241d9a7926f97002025-01-24T13:41:24ZengMDPI AGMetals2075-47012024-12-011511210.3390/met15010012The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal CyclingEwa Pruszczyńska0Zofia Kula1Katarzyna Dąbrowska2Leszek Klimek3Department of Dental Techniques, Medical University of Lodz, 251 Pomorska Street, 92-231 Lodz, PolandDepartment of Dental Techniques, Medical University of Lodz, 251 Pomorska Street, 92-231 Lodz, PolandDepartment of Endodontics, Chair of Conservative Dentistry and Endodontics, Medical University of Lodz, 251 Pomorska Street, 92-213 Lodz, PolandInstitute of Materials Science and Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, 1/15 B. Stefanowskiego Street, 90-924 Lodz, PolandMetal-ceramic crowns and bridges provide a stable and aesthetic tooth reconstruction. Hot pressing of veneering ceramics to metal substructure minimizes the formation of pores. Within the oral cavity, prosthetic structures are exposed to thermal stress. The study examines the influence of temperature changes on the quality and durability of the metal-ceramic bond using thermocyclic loading. Prior to the ceramic pressing, 40 cylindrical alloy specimens (height: 15 mm, diameter: 7 mm) were treated with abrasive blasting using Al<sub>2</sub>O<sub>3</sub> (250 µm) or SiC (250 µm). They were divided into four groups: two control groups (sandblasted with Al<sub>2</sub>O<sub>3</sub> or SiC) and two groups subjected to thermocyclic simulation. The ceramic-to-metal bond strength was measured with a shear test before and after thermocyclic loading. A statistically significant reduction in the bond strength between the metal substructure and the pressed ceramic was found after thermocyclic exposure. The bond strength decreased by 57% for Al<sub>2</sub>O<sub>3</sub> sandblasted specimens and 36% for those sandblasted with SiC, as against the control group. This indicates that thermocycling weakens the bond between the metal alloy and pressed ceramic. The SiC blasting of the cobalt-chromium alloy results in a higher shear bond strength of the material connection after thermocyclic stimulation than the abrasive blasting with Al<sub>2</sub>O<sub>3</sub>.https://www.mdpi.com/2075-4701/15/1/12shear strengthdental porcelainmetal-ceramicthermocyclesabrasive blastingjoint |
| spellingShingle | Ewa Pruszczyńska Zofia Kula Katarzyna Dąbrowska Leszek Klimek The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling Metals shear strength dental porcelain metal-ceramic thermocycles abrasive blasting joint |
| title | The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling |
| title_full | The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling |
| title_fullStr | The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling |
| title_full_unstemmed | The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling |
| title_short | The Shear Bond Strength of Porcelain Bonding to Cobalt-Chromium Dental Alloys Before and After Thermal Cycling |
| title_sort | shear bond strength of porcelain bonding to cobalt chromium dental alloys before and after thermal cycling |
| topic | shear strength dental porcelain metal-ceramic thermocycles abrasive blasting joint |
| url | https://www.mdpi.com/2075-4701/15/1/12 |
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