Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems
Advances in all-ceramic systems have established predictable means of providing metal-free aesthetic and biocompatible materials. These materials must have sufficient strength to be a practical treatment alternative for the fabrication of crowns and fixed partial dentures. OBJECTIVES: The aim of thi...
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| Format: | Article |
| Language: | English |
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University of São Paulo
2010-12-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000600012 |
| _version_ | 1811205156853776384 |
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| author | Bandar Mohammed Abdullah Al-Makramani Abdul Aziz Abdul Razak Mohamed Ibrahim Abu-Hassan |
| author_facet | Bandar Mohammed Abdullah Al-Makramani Abdul Aziz Abdul Razak Mohamed Ibrahim Abu-Hassan |
| author_sort | Bandar Mohammed Abdullah Al-Makramani |
| collection | DOAJ |
| description | Advances in all-ceramic systems have established predictable means of providing metal-free aesthetic and biocompatible materials. These materials must have sufficient strength to be a practical treatment alternative for the fabrication of crowns and fixed partial dentures. OBJECTIVES: The aim of this study was to compare the biaxial flexural strength of three core ceramic materials. MATERIAL AND METHODS: Three groups of 10 disc-shaped specimens (16 mm diameter x 1.2 mm thickness - in accordance with ISO-6872, 1995) were made from the following ceramic materials: Turkom-Cera Fused Alumina [(Turkom-Ceramic (M) Sdn Bhd, Puchong, Selangor, Malaysia)], In-Ceram (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germany) and Vitadur-N (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germany), which were sintered according to the manufacturer's recommendations. The specimens were subjected to biaxial flexural strength test in an universal testing machine at a crosshead speed of 0.5 mm/min. The definitive fracture load was recorded for each specimen and the biaxial flexural strength was calculated from an equation in accordance with ISO-6872. RESULTS: The mean biaxial flexural strength values were: Turkom-Cera: 506.8±87.01 MPa, In-Ceram: 347.4±28.83 MPa and Vitadur-N: 128.7±12.72 MPa. The results were analyzed by the Levene's test and Dunnett's T3 post-hoc test (SPSS software V11.5.0 for Windows, SPSS, Chicago, IL, USA ) at a preset significance level of 5% because of unequal group variances (P<0.001). There was statistically significant difference between the three core ceramics (P<0.05). Turkom-Cera showed the highest biaxial flexural strength, followed by In-Ceram and Vitadur-N. CONCLUSIONS: Turkom-Cera core had significantly higher flexural strength than In-Ceram and Vitadur-N ceramic core materials. |
| first_indexed | 2024-04-12T03:27:03Z |
| format | Article |
| id | doaj.art-3c1e104ac95f46b9973de1c3ba8690b8 |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-04-12T03:27:03Z |
| publishDate | 2010-12-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-3c1e104ac95f46b9973de1c3ba8690b82022-12-22T03:49:41ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652010-12-0118660761210.1590/S1678-77572010000600012Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systemsBandar Mohammed Abdullah Al-MakramaniAbdul Aziz Abdul RazakMohamed Ibrahim Abu-HassanAdvances in all-ceramic systems have established predictable means of providing metal-free aesthetic and biocompatible materials. These materials must have sufficient strength to be a practical treatment alternative for the fabrication of crowns and fixed partial dentures. OBJECTIVES: The aim of this study was to compare the biaxial flexural strength of three core ceramic materials. MATERIAL AND METHODS: Three groups of 10 disc-shaped specimens (16 mm diameter x 1.2 mm thickness - in accordance with ISO-6872, 1995) were made from the following ceramic materials: Turkom-Cera Fused Alumina [(Turkom-Ceramic (M) Sdn Bhd, Puchong, Selangor, Malaysia)], In-Ceram (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germany) and Vitadur-N (Vita Zahnfabrik, Bad Säckingen, Baden-Württemberg, Germany), which were sintered according to the manufacturer's recommendations. The specimens were subjected to biaxial flexural strength test in an universal testing machine at a crosshead speed of 0.5 mm/min. The definitive fracture load was recorded for each specimen and the biaxial flexural strength was calculated from an equation in accordance with ISO-6872. RESULTS: The mean biaxial flexural strength values were: Turkom-Cera: 506.8±87.01 MPa, In-Ceram: 347.4±28.83 MPa and Vitadur-N: 128.7±12.72 MPa. The results were analyzed by the Levene's test and Dunnett's T3 post-hoc test (SPSS software V11.5.0 for Windows, SPSS, Chicago, IL, USA ) at a preset significance level of 5% because of unequal group variances (P<0.001). There was statistically significant difference between the three core ceramics (P<0.05). Turkom-Cera showed the highest biaxial flexural strength, followed by In-Ceram and Vitadur-N. CONCLUSIONS: Turkom-Cera core had significantly higher flexural strength than In-Ceram and Vitadur-N ceramic core materials.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000600012CeramicsStrengthDental materials |
| spellingShingle | Bandar Mohammed Abdullah Al-Makramani Abdul Aziz Abdul Razak Mohamed Ibrahim Abu-Hassan Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems Journal of Applied Oral Science Ceramics Strength Dental materials |
| title | Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems |
| title_full | Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems |
| title_fullStr | Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems |
| title_full_unstemmed | Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems |
| title_short | Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems |
| title_sort | biaxial flexural strength of turkom cera core compared to two other all ceramic systems |
| topic | Ceramics Strength Dental materials |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000600012 |
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