Injection Molding of Biodegradable Deciduous Teeth Dental Post
Dental caries can cause premature loss of deciduous teeth, affecting children’s growth and development. Endodontic treatment using polymer posts is an effective solution. This study explores biodegradable root canal posts made from Polylactic Acid (PLA), Polycaprolactone (PCL), and amorphous calcium...
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MDPI AG
2025-07-01
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| author | Min-Wen Wang Meng-Kun Xu Stratain Era Hasfi |
| author_facet | Min-Wen Wang Meng-Kun Xu Stratain Era Hasfi |
| author_sort | Min-Wen Wang |
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| description | Dental caries can cause premature loss of deciduous teeth, affecting children’s growth and development. Endodontic treatment using polymer posts is an effective solution. This study explores biodegradable root canal posts made from Polylactic Acid (PLA), Polycaprolactone (PCL), and amorphous calcium phosphate (ACP), aiming to enhance mechanical properties, minimize polymer degradation acidity, and prevent inflammation. A root canal post with a spherical head and serrated structure was designed and produced via micromolding and optimized using the Taguchi experimental method. The melt temperature, injection speed, and holding speed were analyzed for their influence on shrinkage, revealing an optimal rate of 2.575%, representing the sum of axial and radial shrinkage. The melt temperature had the highest impact (55.932%), followed by holding speed (33.575%), with there being minimal effect from injection speed. The composite exhibited a flexural strength of 21.936 MPa, a modulus of 2.083 GPa, and a hydrophilic contact angle of 73.73 degrees. Cell survival tests confirmed biocompatibility, with a survival rate exceeding 70% and no toxicity. These findings highlight the potential of PLA/PCL/ACP composites, combined with injection molding, for developing biodegradable root canal posts in primary teeth. |
| format | Article |
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| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-91e47e1c521c4f2ab304a34014db69bb2025-08-20T03:50:17ZengMDPI AGApplied Sciences2076-34172025-07-011513741410.3390/app15137414Injection Molding of Biodegradable Deciduous Teeth Dental PostMin-Wen Wang0Meng-Kun Xu1Stratain Era Hasfi2Department of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDental caries can cause premature loss of deciduous teeth, affecting children’s growth and development. Endodontic treatment using polymer posts is an effective solution. This study explores biodegradable root canal posts made from Polylactic Acid (PLA), Polycaprolactone (PCL), and amorphous calcium phosphate (ACP), aiming to enhance mechanical properties, minimize polymer degradation acidity, and prevent inflammation. A root canal post with a spherical head and serrated structure was designed and produced via micromolding and optimized using the Taguchi experimental method. The melt temperature, injection speed, and holding speed were analyzed for their influence on shrinkage, revealing an optimal rate of 2.575%, representing the sum of axial and radial shrinkage. The melt temperature had the highest impact (55.932%), followed by holding speed (33.575%), with there being minimal effect from injection speed. The composite exhibited a flexural strength of 21.936 MPa, a modulus of 2.083 GPa, and a hydrophilic contact angle of 73.73 degrees. Cell survival tests confirmed biocompatibility, with a survival rate exceeding 70% and no toxicity. These findings highlight the potential of PLA/PCL/ACP composites, combined with injection molding, for developing biodegradable root canal posts in primary teeth.https://www.mdpi.com/2076-3417/15/13/7414biodegradable materialdental postendodontic treatmentinjection moldingdeciduous dental teeth |
| spellingShingle | Min-Wen Wang Meng-Kun Xu Stratain Era Hasfi Injection Molding of Biodegradable Deciduous Teeth Dental Post Applied Sciences biodegradable material dental post endodontic treatment injection molding deciduous dental teeth |
| title | Injection Molding of Biodegradable Deciduous Teeth Dental Post |
| title_full | Injection Molding of Biodegradable Deciduous Teeth Dental Post |
| title_fullStr | Injection Molding of Biodegradable Deciduous Teeth Dental Post |
| title_full_unstemmed | Injection Molding of Biodegradable Deciduous Teeth Dental Post |
| title_short | Injection Molding of Biodegradable Deciduous Teeth Dental Post |
| title_sort | injection molding of biodegradable deciduous teeth dental post |
| topic | biodegradable material dental post endodontic treatment injection molding deciduous dental teeth |
| url | https://www.mdpi.com/2076-3417/15/13/7414 |
| work_keys_str_mv | AT minwenwang injectionmoldingofbiodegradabledeciduousteethdentalpost AT mengkunxu injectionmoldingofbiodegradabledeciduousteethdentalpost AT stratainerahasfi injectionmoldingofbiodegradabledeciduousteethdentalpost |