Flexural properties of three lithium disilicate materials: An in vitro evaluation
Objective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of t...
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| Format: | Article |
| Language: | English |
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Springer
2021-11-01
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| Series: | Saudi Dental Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905220307458 |
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| author | Ahmad M. Al-Thobity Abdulmohsen Alsalman |
| author_facet | Ahmad M. Al-Thobity Abdulmohsen Alsalman |
| author_sort | Ahmad M. Al-Thobity |
| collection | DOAJ |
| description | Objective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of three LD ceramics. For heat-pressed LD specimens, acrylate polymer blocks were cut and divided into two groups (n = 15 per group); a GC LiSi Press LD group (LP) and an IPS e.max Press group (EP). Specimens for each group were pressed corresponding to the manufacturer’s recommendations. For the CAD-CAM Group (EC), IPS e.max CAD blocks were cut to obtain specimens (n = 15) to the desired dimensions. Flexural strength and Young’s modulus tests were executed using a universal testing machine. A one-way ANOVA and post-hoc Tuckey’s tests were applied to analyze the results (p ≤ 0.05). Results: Regarding flexural strength, the EC group showed higher statistically substantial difference than the EP and LP groups (p = 0.001), while there was no pronounced difference between the EP and LP groups (p = 0.065). For Young’s modulus test, all the three tested groups had no statistically substantial difference (p = 0.798). Conclusion: The IPS e.max CAD group had higher mechanical performance than the IPS e.max Press and GC LiSi Press groups. |
| format | Article |
| id | doaj-art-554893b4f422485ea45066330f68dd47 |
| institution | Kabale University |
| issn | 1013-9052 |
| language | English |
| publishDate | 2021-11-01 |
| publisher | Springer |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj-art-554893b4f422485ea45066330f68dd472025-08-20T03:49:04ZengSpringerSaudi Dental Journal1013-90522021-11-0133762062710.1016/j.sdentj.2020.07.004Flexural properties of three lithium disilicate materials: An in vitro evaluationAhmad M. Al-Thobity0Abdulmohsen Alsalman1Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia; Corresponding author.Department of Dentistry, Armed Forced Hospital Dhahran, Dhahran, Saudi ArabiaObjective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of three LD ceramics. For heat-pressed LD specimens, acrylate polymer blocks were cut and divided into two groups (n = 15 per group); a GC LiSi Press LD group (LP) and an IPS e.max Press group (EP). Specimens for each group were pressed corresponding to the manufacturer’s recommendations. For the CAD-CAM Group (EC), IPS e.max CAD blocks were cut to obtain specimens (n = 15) to the desired dimensions. Flexural strength and Young’s modulus tests were executed using a universal testing machine. A one-way ANOVA and post-hoc Tuckey’s tests were applied to analyze the results (p ≤ 0.05). Results: Regarding flexural strength, the EC group showed higher statistically substantial difference than the EP and LP groups (p = 0.001), while there was no pronounced difference between the EP and LP groups (p = 0.065). For Young’s modulus test, all the three tested groups had no statistically substantial difference (p = 0.798). Conclusion: The IPS e.max CAD group had higher mechanical performance than the IPS e.max Press and GC LiSi Press groups.http://www.sciencedirect.com/science/article/pii/S1013905220307458Lithium disilicateCeramicsCAD-CAMHeat press |
| spellingShingle | Ahmad M. Al-Thobity Abdulmohsen Alsalman Flexural properties of three lithium disilicate materials: An in vitro evaluation Saudi Dental Journal Lithium disilicate Ceramics CAD-CAM Heat press |
| title | Flexural properties of three lithium disilicate materials: An in vitro evaluation |
| title_full | Flexural properties of three lithium disilicate materials: An in vitro evaluation |
| title_fullStr | Flexural properties of three lithium disilicate materials: An in vitro evaluation |
| title_full_unstemmed | Flexural properties of three lithium disilicate materials: An in vitro evaluation |
| title_short | Flexural properties of three lithium disilicate materials: An in vitro evaluation |
| title_sort | flexural properties of three lithium disilicate materials an in vitro evaluation |
| topic | Lithium disilicate Ceramics CAD-CAM Heat press |
| url | http://www.sciencedirect.com/science/article/pii/S1013905220307458 |
| work_keys_str_mv | AT ahmadmalthobity flexuralpropertiesofthreelithiumdisilicatematerialsaninvitroevaluation AT abdulmohsenalsalman flexuralpropertiesofthreelithiumdisilicatematerialsaninvitroevaluation |