A self-reinforcing biodegradable implant made of poly(ɛ-caprolactone)/calcium phosphate ceramic composite for craniomaxillofacial fracture fixation

Chang Chin Wu, Yuh Feng Tsai, Li Ho Hsu, Jo Ping Chen, Shoichiro Sumi, Kai Chiang Yang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose Biodegradable polymer fixators have been used widely in oral and maxillofacial surgery for fracture management. However, short-comings such as insufficient mechanical strength, inappropriate degradation time, lack of radiolucency, and foreign body reactions during bone remodeling remain. Material and methods In this study, calcium phosphate ceramic (CPC, including tricalcium phosphate [TCP] and tetracalcium phosphate/dicalcium phosphate [TTCP/DCP]) and poly(ε-caprolactone) (PCL) were used to fabricate biodegradable orthopedic fixation devices. Results Different weight ratios of CPC were added to PCL, and the results showed that the PCL/CPC composites had good radiopacity, mechanical properties, and biocompatibility. CPC was transformed into hydroxyapatite when the composites were immersed in simulated body fluid. The PCL/TTCP/DCP composite had a higher compressive strength relative to PCL/TCP after setting, and this self-reinforcing property contributed to the hydration of TTCP/DCP and formation of apatite crystals. Thus, PCL/TTCP/DCP screws were prepared for animal studies. No postoperative mortality or complications were noted 6 months postsurgery. Biodegradation of the PCL/TTCP/DCP screws and newly formed bony tissue around the degraded composites were shown on both micro–computed tomography and histology. No peri-implant bone resorption was noted. Conclusion The self-reinforcing PCL/TTCP/DCP composite can be used to fabricate biodegradable fixators for fracture management in craniomaxillofacial fracture fixation.

Original languageEnglish
Pages (from-to)1333-1341
Number of pages9
JournalJournal of Cranio-Maxillofacial Surgery
Volume44
Issue number9
DOIs
Publication statusPublished - 2016

Fingerprint

Absorbable Implants
Fracture Fixation
Ceramics
Oral Surgery
Orthopedic Fixation Devices
Compressive Strength
Foreign-Body Reaction
X-Ray Microtomography
Apatites
Bone Remodeling
Body Fluids
Durapatite
Bone Resorption
anhydrous dibasic calcium phosphate
calcium phosphate
polycaprolactone
tetracalcium phosphate
Histology
Polymers
Weights and Measures

Keywords

  • Biodegradable fixator
  • Fracture
  • Osseointegration
  • Osteofixation

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

Cite this

A self-reinforcing biodegradable implant made of poly(ɛ-caprolactone)/calcium phosphate ceramic composite for craniomaxillofacial fracture fixation. / Wu, Chang Chin; Tsai, Yuh Feng; Hsu, Li Ho; Chen, Jo Ping; Sumi, Shoichiro; Yang, Kai Chiang.

In: Journal of Cranio-Maxillofacial Surgery, Vol. 44, No. 9, 2016, p. 1333-1341.

Research output: Contribution to journalArticle

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abstract = "Purpose Biodegradable polymer fixators have been used widely in oral and maxillofacial surgery for fracture management. However, short-comings such as insufficient mechanical strength, inappropriate degradation time, lack of radiolucency, and foreign body reactions during bone remodeling remain. Material and methods In this study, calcium phosphate ceramic (CPC, including tricalcium phosphate [TCP] and tetracalcium phosphate/dicalcium phosphate [TTCP/DCP]) and poly(ε-caprolactone) (PCL) were used to fabricate biodegradable orthopedic fixation devices. Results Different weight ratios of CPC were added to PCL, and the results showed that the PCL/CPC composites had good radiopacity, mechanical properties, and biocompatibility. CPC was transformed into hydroxyapatite when the composites were immersed in simulated body fluid. The PCL/TTCP/DCP composite had a higher compressive strength relative to PCL/TCP after setting, and this self-reinforcing property contributed to the hydration of TTCP/DCP and formation of apatite crystals. Thus, PCL/TTCP/DCP screws were prepared for animal studies. No postoperative mortality or complications were noted 6 months postsurgery. Biodegradation of the PCL/TTCP/DCP screws and newly formed bony tissue around the degraded composites were shown on both micro–computed tomography and histology. No peri-implant bone resorption was noted. Conclusion The self-reinforcing PCL/TTCP/DCP composite can be used to fabricate biodegradable fixators for fracture management in craniomaxillofacial fracture fixation.",
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AU - Sumi, Shoichiro

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N2 - Purpose Biodegradable polymer fixators have been used widely in oral and maxillofacial surgery for fracture management. However, short-comings such as insufficient mechanical strength, inappropriate degradation time, lack of radiolucency, and foreign body reactions during bone remodeling remain. Material and methods In this study, calcium phosphate ceramic (CPC, including tricalcium phosphate [TCP] and tetracalcium phosphate/dicalcium phosphate [TTCP/DCP]) and poly(ε-caprolactone) (PCL) were used to fabricate biodegradable orthopedic fixation devices. Results Different weight ratios of CPC were added to PCL, and the results showed that the PCL/CPC composites had good radiopacity, mechanical properties, and biocompatibility. CPC was transformed into hydroxyapatite when the composites were immersed in simulated body fluid. The PCL/TTCP/DCP composite had a higher compressive strength relative to PCL/TCP after setting, and this self-reinforcing property contributed to the hydration of TTCP/DCP and formation of apatite crystals. Thus, PCL/TTCP/DCP screws were prepared for animal studies. No postoperative mortality or complications were noted 6 months postsurgery. Biodegradation of the PCL/TTCP/DCP screws and newly formed bony tissue around the degraded composites were shown on both micro–computed tomography and histology. No peri-implant bone resorption was noted. Conclusion The self-reinforcing PCL/TTCP/DCP composite can be used to fabricate biodegradable fixators for fracture management in craniomaxillofacial fracture fixation.

AB - Purpose Biodegradable polymer fixators have been used widely in oral and maxillofacial surgery for fracture management. However, short-comings such as insufficient mechanical strength, inappropriate degradation time, lack of radiolucency, and foreign body reactions during bone remodeling remain. Material and methods In this study, calcium phosphate ceramic (CPC, including tricalcium phosphate [TCP] and tetracalcium phosphate/dicalcium phosphate [TTCP/DCP]) and poly(ε-caprolactone) (PCL) were used to fabricate biodegradable orthopedic fixation devices. Results Different weight ratios of CPC were added to PCL, and the results showed that the PCL/CPC composites had good radiopacity, mechanical properties, and biocompatibility. CPC was transformed into hydroxyapatite when the composites were immersed in simulated body fluid. The PCL/TTCP/DCP composite had a higher compressive strength relative to PCL/TCP after setting, and this self-reinforcing property contributed to the hydration of TTCP/DCP and formation of apatite crystals. Thus, PCL/TTCP/DCP screws were prepared for animal studies. No postoperative mortality or complications were noted 6 months postsurgery. Biodegradation of the PCL/TTCP/DCP screws and newly formed bony tissue around the degraded composites were shown on both micro–computed tomography and histology. No peri-implant bone resorption was noted. Conclusion The self-reinforcing PCL/TTCP/DCP composite can be used to fabricate biodegradable fixators for fracture management in craniomaxillofacial fracture fixation.

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