A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners
Abstract Background The demand for orthodontic treatment using clear aligners has been gradually increasing because of their superior esthetics compared with conventional fixed orthodontic therapy. This study aimed to evaluate and compare the compressive strength of three-dimensional direct printing...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-86687-4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832585815534862336 |
|---|---|
| author | Byeong Gu Bae Young Ho Kim Gun Ho Lee Jiho Lee Jinhong Min Hoon Kim Jeong Won Shin Hwa Sung Chae |
| author_facet | Byeong Gu Bae Young Ho Kim Gun Ho Lee Jiho Lee Jinhong Min Hoon Kim Jeong Won Shin Hwa Sung Chae |
| author_sort | Byeong Gu Bae |
| collection | DOAJ |
| description | Abstract Background The demand for orthodontic treatment using clear aligners has been gradually increasing because of their superior esthetics compared with conventional fixed orthodontic therapy. This study aimed to evaluate and compare the compressive strength of three-dimensional direct printing aligners (3DPA) with that of conventional thermo-forming aligners (TFA) to determine their clinical applicability. In the experimental group, the 3DPA material TC-85 (TC-85 full) was used to create angular protrusions called rectangular pressure areas (RPA). A protrusion akin to the power ridge typically employed in conventional TFAs was created using glycol-modified polyethylene terephthalate (PETG; Control 1). RPA was created using the same TC-85 without filling the protrusions (TC-85 blank; Control 2). Compression cycle tests were conducted on an LTM 3 h electrodynamic testing machine (Zwick Roell, Germany), with 500 cycles and compression depths of 100, 300, 500, and 700 µm. Twenty specimens were tested for PETG, 17 for the TC-85 blank, and 19 for the TC-85 full. Results Changes in the compressive force were assessed based on the material and thickness. The results indicated significantly higher and broader ranges of compressive strength for specimens fabricated with the 3DPA material TC-85 compared with those fabricated using PETG. Among the TC-85 specimens, TC-85 full demonstrated the highest statistically significant compressive strength . Conclusions 3DPA technology enables precise modifications in the shape and inner thickness at specific dental sites, including the creation of ridges in targeted areas, of aligners. These alterations enhance the biomechanical capability of aligners to exert selective forces necessary for desired tooth movement while reducing the number of attachments, thereby demonstrating the clinical potential of 3D-printed aligners in orthodontic treatment. |
| format | Article |
| id | doaj-art-ed7b51c911f84b258d1dad9250d46b17 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-ed7b51c911f84b258d1dad9250d46b172025-01-26T12:29:14ZengNature PortfolioScientific Reports2045-23222025-01-011511910.1038/s41598-025-86687-4A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear alignersByeong Gu Bae0Young Ho Kim1Gun Ho Lee2Jiho Lee3Jinhong Min4Hoon Kim5Jeong Won Shin6Hwa Sung Chae7Department of Orthodontics, Institute of Oral Health Science, Ajou University School of MedicineDepartment of Orthodontics, Institute of Oral Health Science, Ajou University School of MedicineGraphy R&D Center, Graphy IncGraphy R&D Center, Graphy IncGraphy R&D Center, Graphy IncGraphy R&D Center, Graphy IncDepartment of Orthodontics, Institute of Oral Health Science, Ajou University School of MedicineDepartment of Orthodontics, Institute of Oral Health Science, Ajou University School of MedicineAbstract Background The demand for orthodontic treatment using clear aligners has been gradually increasing because of their superior esthetics compared with conventional fixed orthodontic therapy. This study aimed to evaluate and compare the compressive strength of three-dimensional direct printing aligners (3DPA) with that of conventional thermo-forming aligners (TFA) to determine their clinical applicability. In the experimental group, the 3DPA material TC-85 (TC-85 full) was used to create angular protrusions called rectangular pressure areas (RPA). A protrusion akin to the power ridge typically employed in conventional TFAs was created using glycol-modified polyethylene terephthalate (PETG; Control 1). RPA was created using the same TC-85 without filling the protrusions (TC-85 blank; Control 2). Compression cycle tests were conducted on an LTM 3 h electrodynamic testing machine (Zwick Roell, Germany), with 500 cycles and compression depths of 100, 300, 500, and 700 µm. Twenty specimens were tested for PETG, 17 for the TC-85 blank, and 19 for the TC-85 full. Results Changes in the compressive force were assessed based on the material and thickness. The results indicated significantly higher and broader ranges of compressive strength for specimens fabricated with the 3DPA material TC-85 compared with those fabricated using PETG. Among the TC-85 specimens, TC-85 full demonstrated the highest statistically significant compressive strength . Conclusions 3DPA technology enables precise modifications in the shape and inner thickness at specific dental sites, including the creation of ridges in targeted areas, of aligners. These alterations enhance the biomechanical capability of aligners to exert selective forces necessary for desired tooth movement while reducing the number of attachments, thereby demonstrating the clinical potential of 3D-printed aligners in orthodontic treatment.https://doi.org/10.1038/s41598-025-86687-43D printing alignerShape memory alignerRectangular pressure areaPower ridge |
| spellingShingle | Byeong Gu Bae Young Ho Kim Gun Ho Lee Jiho Lee Jinhong Min Hoon Kim Jeong Won Shin Hwa Sung Chae A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners Scientific Reports 3D printing aligner Shape memory aligner Rectangular pressure area Power ridge |
| title | A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners |
| title_full | A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners |
| title_fullStr | A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners |
| title_full_unstemmed | A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners |
| title_short | A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners |
| title_sort | study on the compressive strength of three dimensional direct printing aligner material for specific designing of clear aligners |
| topic | 3D printing aligner Shape memory aligner Rectangular pressure area Power ridge |
| url | https://doi.org/10.1038/s41598-025-86687-4 |
| work_keys_str_mv | AT byeonggubae astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT younghokim astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT gunholee astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jiholee astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jinhongmin astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT hoonkim astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jeongwonshin astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT hwasungchae astudyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT byeonggubae studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT younghokim studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT gunholee studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jiholee studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jinhongmin studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT hoonkim studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT jeongwonshin studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners AT hwasungchae studyonthecompressivestrengthofthreedimensionaldirectprintingalignermaterialforspecificdesigningofclearaligners |