Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials
Abstract Background This study compared the impact of thermal cycling on the flexural strength of denture-base materials produced through conventional and digital methods, using both subtractive and additive approaches. Methods In total, 60 rectangular specimens were fabricated with specific dimensi...
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| Format: | Article |
| Language: | English |
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BMC
2024-03-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-024-04122-y |
| _version_ | 1827309969361338368 |
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| author | Tuğba Temizci Hatice Nalan Bozoğulları |
| author_facet | Tuğba Temizci Hatice Nalan Bozoğulları |
| author_sort | Tuğba Temizci |
| collection | DOAJ |
| description | Abstract Background This study compared the impact of thermal cycling on the flexural strength of denture-base materials produced through conventional and digital methods, using both subtractive and additive approaches. Methods In total, 60 rectangular specimens were fabricated with specific dimensions for flexural strength tests. The dimensions were set according to the International Organization for Standardization (ISO) guideline 20795-1:2013 as 64 × 10 × 3.3 ± 0.2 mm. Specimens from each material group were divided into two subgroups (thermal cycled or nonthermal cycled, n = 10/group). We used distinct methods to produce three different denture-base materials: Ivobase (IB), which is a computer-aided-design/computer-aided-manufacturing-type milled pre-polymerized polymethyl methacrylate resin disc; Formlabs (FL), a 3D-printed denture-base resin; and Meliodent (MD), a conventional heat-polymerized acrylic. Flexural strength tests were performed on half of the samples without a thermal-cycle procedure, and the other half were tested after a thermal cycle. The data were analyzed using a two-way analysis of variance and a post hoc Tukey test (α = 0.05). Results Based on the results of flexural-strength testing, the ranking was as follows: FL > IB > MD. The effect of thermal aging was statistically significant for the FL and IB bases, but not for the MD base. Conclusions Digitally produced denture bases exhibited superior flexural strength compared with conventionally manufactured bases. Although thermal cycling reduced flexural strength in all groups, the decrease was not statistically significant in the heat-polymerized acrylic group. |
| first_indexed | 2024-04-24T19:52:13Z |
| format | Article |
| id | doaj.art-e3d67ac8172a499a9e00ef818be578fd |
| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-04-24T19:52:13Z |
| publishDate | 2024-03-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-e3d67ac8172a499a9e00ef818be578fd2024-03-24T12:35:36ZengBMCBMC Oral Health1472-68312024-03-012411810.1186/s12903-024-04122-yEffect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materialsTuğba Temizci0Hatice Nalan Bozoğulları1Department of Prosthodontics, Faculty of Dentistry, Karamanoğlu Mehmetbey UniversityDepartment of Prosthodontics, Faculty of Dentistry, Karamanoğlu Mehmetbey UniversityAbstract Background This study compared the impact of thermal cycling on the flexural strength of denture-base materials produced through conventional and digital methods, using both subtractive and additive approaches. Methods In total, 60 rectangular specimens were fabricated with specific dimensions for flexural strength tests. The dimensions were set according to the International Organization for Standardization (ISO) guideline 20795-1:2013 as 64 × 10 × 3.3 ± 0.2 mm. Specimens from each material group were divided into two subgroups (thermal cycled or nonthermal cycled, n = 10/group). We used distinct methods to produce three different denture-base materials: Ivobase (IB), which is a computer-aided-design/computer-aided-manufacturing-type milled pre-polymerized polymethyl methacrylate resin disc; Formlabs (FL), a 3D-printed denture-base resin; and Meliodent (MD), a conventional heat-polymerized acrylic. Flexural strength tests were performed on half of the samples without a thermal-cycle procedure, and the other half were tested after a thermal cycle. The data were analyzed using a two-way analysis of variance and a post hoc Tukey test (α = 0.05). Results Based on the results of flexural-strength testing, the ranking was as follows: FL > IB > MD. The effect of thermal aging was statistically significant for the FL and IB bases, but not for the MD base. Conclusions Digitally produced denture bases exhibited superior flexural strength compared with conventionally manufactured bases. Although thermal cycling reduced flexural strength in all groups, the decrease was not statistically significant in the heat-polymerized acrylic group.https://doi.org/10.1186/s12903-024-04122-yDenture base3D printedMilledFlexural strength |
| spellingShingle | Tuğba Temizci Hatice Nalan Bozoğulları Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials BMC Oral Health Denture base 3D printed Milled Flexural strength |
| title | Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials |
| title_full | Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials |
| title_fullStr | Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials |
| title_full_unstemmed | Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials |
| title_short | Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials |
| title_sort | effect of thermal cycling on the flexural strength of 3 d printed cad cam milled and heat polymerized denture base materials |
| topic | Denture base 3D printed Milled Flexural strength |
| url | https://doi.org/10.1186/s12903-024-04122-y |
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