Mechanical properties of materials for 3D printed orthodontic retainers
Aim: The purpose of this study was to compare the mechanical properties of materials used for orthodontic retainers made by direct 3D printing and thermoforming. Materials and methods: Twenty-one specimens (n=7) from 3 different materials (Formlabs Dental LT Clear V2 - Formlabs Inc....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2023-12-01
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| Series: | Folia Medica |
| Online Access: | https://foliamedica.bg/article/107299/download/pdf/ |
| _version_ | 1797369079423565824 |
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| author | Yoan Y. Stoev Todor Ts. Uzunov Nikolina S. Stoyanova Raya G. Grozdanova-Uzunova Dimitar N. Kosturkov Iva K. Taneva |
| author_facet | Yoan Y. Stoev Todor Ts. Uzunov Nikolina S. Stoyanova Raya G. Grozdanova-Uzunova Dimitar N. Kosturkov Iva K. Taneva |
| author_sort | Yoan Y. Stoev |
| collection | DOAJ |
| description | Aim: The purpose of this study was to compare the mechanical properties of materials used for orthodontic retainers made by direct 3D printing and thermoforming. Materials and methods: Twenty-one specimens (n=7) from 3 different materials (Formlabs Dental LT Clear V2 - Formlabs Inc., Somerville, Massachusetts, USA; NextDent Ortho Flex - Vertex-Dental B.V., Soesterberg, The Netherlands, and Erkodent Erkodur - ERKODENT, Germany) were manufactured and their mechanical properties were evaluated. Two of the specimen groups were 3D printed and the other one was fabricated using a material for thermoforming. The statistical methods we applied were descriptive statistics, the Kruskal-Wallis and Dunn’s post-hoc tests. Results: With respect to Young’s modulus (E), the Kruskal-Wallis test (df=2, χ2=17.121, p=0.0002) showed a significant difference between the materials for direct 3D printing of orthodontic retainers (E=2762.4 MPa±115.16 MPa for group 1 and 2393.05 MPa±158.13 MPa for group 2) and thermoforming foils (group 3, E=1939.4 MPa±74.18 MPa). Statistically significant differences were also found between the flexural strength (FS) (Kruskal-Wallis test, df=2, χ2=17.818, p=0.0001) and F(max) (Kruskal-Wallis test, df=2, χ2=17.818, p=0.0001). Conclusions: The materials tested in the current study showed statistically significant differences in their Young’s modulus, flexural strength, and F(max). |
| first_indexed | 2024-03-08T17:41:38Z |
| format | Article |
| id | doaj.art-2ec4de2c5b8843eb9c50055659c15463 |
| institution | Directory Open Access Journal |
| issn | 1314-2143 |
| language | English |
| last_indexed | 2024-03-08T17:41:38Z |
| publishDate | 2023-12-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Folia Medica |
| spelling | doaj.art-2ec4de2c5b8843eb9c50055659c154632024-01-02T11:00:08ZengPensoft PublishersFolia Medica1314-21432023-12-0165698699210.3897/folmed.65.e107299107299Mechanical properties of materials for 3D printed orthodontic retainersYoan Y. Stoev0Todor Ts. Uzunov1Nikolina S. Stoyanova2Raya G. Grozdanova-Uzunova3Dimitar N. Kosturkov4Iva K. Taneva5Medical University of SofiaMedical University of SofiaMedical University of SofiaMedical University of SofiaMedical University of SofiaMedical University of SofiaAim: The purpose of this study was to compare the mechanical properties of materials used for orthodontic retainers made by direct 3D printing and thermoforming. Materials and methods: Twenty-one specimens (n=7) from 3 different materials (Formlabs Dental LT Clear V2 - Formlabs Inc., Somerville, Massachusetts, USA; NextDent Ortho Flex - Vertex-Dental B.V., Soesterberg, The Netherlands, and Erkodent Erkodur - ERKODENT, Germany) were manufactured and their mechanical properties were evaluated. Two of the specimen groups were 3D printed and the other one was fabricated using a material for thermoforming. The statistical methods we applied were descriptive statistics, the Kruskal-Wallis and Dunn’s post-hoc tests. Results: With respect to Young’s modulus (E), the Kruskal-Wallis test (df=2, χ2=17.121, p=0.0002) showed a significant difference between the materials for direct 3D printing of orthodontic retainers (E=2762.4 MPa±115.16 MPa for group 1 and 2393.05 MPa±158.13 MPa for group 2) and thermoforming foils (group 3, E=1939.4 MPa±74.18 MPa). Statistically significant differences were also found between the flexural strength (FS) (Kruskal-Wallis test, df=2, χ2=17.818, p=0.0001) and F(max) (Kruskal-Wallis test, df=2, χ2=17.818, p=0.0001). Conclusions: The materials tested in the current study showed statistically significant differences in their Young’s modulus, flexural strength, and F(max).https://foliamedica.bg/article/107299/download/pdf/ |
| spellingShingle | Yoan Y. Stoev Todor Ts. Uzunov Nikolina S. Stoyanova Raya G. Grozdanova-Uzunova Dimitar N. Kosturkov Iva K. Taneva Mechanical properties of materials for 3D printed orthodontic retainers Folia Medica |
| title | Mechanical properties of materials for 3D printed orthodontic retainers |
| title_full | Mechanical properties of materials for 3D printed orthodontic retainers |
| title_fullStr | Mechanical properties of materials for 3D printed orthodontic retainers |
| title_full_unstemmed | Mechanical properties of materials for 3D printed orthodontic retainers |
| title_short | Mechanical properties of materials for 3D printed orthodontic retainers |
| title_sort | mechanical properties of materials for 3d printed orthodontic retainers |
| url | https://foliamedica.bg/article/107299/download/pdf/ |
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