Effect of laser welding on the titanium ceramic tensile bond strength
Titanium reacts strongly with elements, mainly oxygen at high temperature. The high temperature of titanium laser welding modifies the surface, and may interfere on the metal-ceramic tensile bond strength. OBJECTIVE: The influence of laser welding on the titanium-ceramic bonding has not yet been est...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University of São Paulo
2011-08-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400002 |
| _version_ | 1811234024801173504 |
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| author | Rodrigo Galo Ricardo Faria Ribeiro Renata Cristina Silveira Rodrigues Valéria de Oliveira Pagnano Maria da Glória Chiarello de Mattos |
| author_facet | Rodrigo Galo Ricardo Faria Ribeiro Renata Cristina Silveira Rodrigues Valéria de Oliveira Pagnano Maria da Glória Chiarello de Mattos |
| author_sort | Rodrigo Galo |
| collection | DOAJ |
| description | Titanium reacts strongly with elements, mainly oxygen at high temperature. The high temperature of titanium laser welding modifies the surface, and may interfere on the metal-ceramic tensile bond strength. OBJECTIVE: The influence of laser welding on the titanium-ceramic bonding has not yet been established. The purpose of this in vitro study was to analyze the influence of laser welding applied to commercially pure titanium (CpTi) substructure on the bond strength of commercial ceramic. The influence of airborne particle abrasion (Al2O3) conditions was also studied. MATERIAL AND METHODS: Forty CpTi cylindrical rods (3 mm x 60 mm) were cast and divided into 2 groups: with laser welding (L) and without laser welding (WL). Each group was divided in 4 subgroups, according to the size of the particles used in airborne particle abrasion: A - Al2O3 (250 µm); B - Al2O3 (180 µm); C - Al2O3 (110 µm); D - Al2O3 (50 µm). Ceramic rings were fused around the CpTi rods. Specimens were invested and their tensile strength was measured at fracture with a universal testing machine at a crosshead speed of 2.0 mm/min and 200 kgf load cell. Statistical analysis was carried out with analysis of variance and compared using the independent t test (p<0.05). RESULTS: Significant differences were found among all subgroups (p<0.05). The highest and the lowest bond strength means were recorded in subgroups WLC (52.62 MPa) and LD (24.02 MPa), respectively. CONCLUSION: Airborne particle abrasion yielded significantly lower bond strength as the Al2O3 particle size decreased. Mechanical retention decreased in the laser-welded specimens, i.e. the metal-ceramic tensile bond strength was lower. |
| first_indexed | 2024-04-12T11:29:33Z |
| format | Article |
| id | doaj.art-265d0a8124254dfb9348a12a5f75e696 |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-04-12T11:29:33Z |
| publishDate | 2011-08-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-265d0a8124254dfb9348a12a5f75e6962022-12-22T03:35:05ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652011-08-01194301305Effect of laser welding on the titanium ceramic tensile bond strengthRodrigo GaloRicardo Faria RibeiroRenata Cristina Silveira RodriguesValéria de Oliveira PagnanoMaria da Glória Chiarello de MattosTitanium reacts strongly with elements, mainly oxygen at high temperature. The high temperature of titanium laser welding modifies the surface, and may interfere on the metal-ceramic tensile bond strength. OBJECTIVE: The influence of laser welding on the titanium-ceramic bonding has not yet been established. The purpose of this in vitro study was to analyze the influence of laser welding applied to commercially pure titanium (CpTi) substructure on the bond strength of commercial ceramic. The influence of airborne particle abrasion (Al2O3) conditions was also studied. MATERIAL AND METHODS: Forty CpTi cylindrical rods (3 mm x 60 mm) were cast and divided into 2 groups: with laser welding (L) and without laser welding (WL). Each group was divided in 4 subgroups, according to the size of the particles used in airborne particle abrasion: A - Al2O3 (250 µm); B - Al2O3 (180 µm); C - Al2O3 (110 µm); D - Al2O3 (50 µm). Ceramic rings were fused around the CpTi rods. Specimens were invested and their tensile strength was measured at fracture with a universal testing machine at a crosshead speed of 2.0 mm/min and 200 kgf load cell. Statistical analysis was carried out with analysis of variance and compared using the independent t test (p<0.05). RESULTS: Significant differences were found among all subgroups (p<0.05). The highest and the lowest bond strength means were recorded in subgroups WLC (52.62 MPa) and LD (24.02 MPa), respectively. CONCLUSION: Airborne particle abrasion yielded significantly lower bond strength as the Al2O3 particle size decreased. Mechanical retention decreased in the laser-welded specimens, i.e. the metal-ceramic tensile bond strength was lower.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400002TitaniumDental porcelainTensile strength |
| spellingShingle | Rodrigo Galo Ricardo Faria Ribeiro Renata Cristina Silveira Rodrigues Valéria de Oliveira Pagnano Maria da Glória Chiarello de Mattos Effect of laser welding on the titanium ceramic tensile bond strength Journal of Applied Oral Science Titanium Dental porcelain Tensile strength |
| title | Effect of laser welding on the titanium ceramic tensile bond strength |
| title_full | Effect of laser welding on the titanium ceramic tensile bond strength |
| title_fullStr | Effect of laser welding on the titanium ceramic tensile bond strength |
| title_full_unstemmed | Effect of laser welding on the titanium ceramic tensile bond strength |
| title_short | Effect of laser welding on the titanium ceramic tensile bond strength |
| title_sort | effect of laser welding on the titanium ceramic tensile bond strength |
| topic | Titanium Dental porcelain Tensile strength |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400002 |
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