Development of guided bone regeneration membrane composed of β-tricalcium phosphate and poly ( l-lactide- co-glycolide- co- ε-caprolactone) composites

• Published in: Biomaterials Vol. 25; no. 28; pp. 5979 - 5986
• Main Authors: Kikuchi, Masanori, Koyama, Yoshihisa, Yamada, Takeki, Imamura, Yukari, Okada, Takao, Shirahama, Noriaki, Akita, Kazumi, Takakuda, Kazuo, Tanaka, Junzo
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier Ltd 01.12.2004
• Subjects: Animals; Bioabsorbable; Biodegradation, Environmental; Bone Regeneration; Calcium Phosphates - chemistry; Composite; Dogs; Guided bone regeneration; Male; Membranes, Artificial; Poly ( l-lactide- co-glycolide- co- ε-caprolactone); Polyesters - chemistry; Spectroscopy, Fourier Transform Infrared; X-Ray Diffraction; β-tricalcium phosphate; β-tricalcium phosphate; Guided bone regeneration; Poly ( l-lactide- co-glycolide- co- ε-caprolactone); Composite; Bioabsorbable
• ISSN: 0142-9612; 1878-5905
• DOI: 10.1016/j.biomaterials.2004.02.001

To create biodegradable and thermoplastic materials for guided bone regeneration, GBR, and guided tissue regeneration, GTR, membranes, composites of β-tricalcium phosphate, TCP, and biodegradable polyesters, poly ( l-lactide- co-glycolide- co- ε-caprolactone), PLGC, and poly ( l-lactide- co- ε-caprolactone), PLCL, were prepared by a heat-kneading method. The composites maintained thermoplasticity and mechanical strength by formation of a chemical interaction between Ca on TCP and CO on the lactide segment of PLGC or PLCL. The composites also indicated composite effects in pH auto-regulation property and elongation of biodegradation period, e.g., the composites maintained their mechanical strength up to 12 weeks after soaking in both physiological and phosphate-buffered saline, and the period was sufficient time to use for GBR and GTR membranes. Animal tests for GBR indicated that the present composite membrane successfully regenerated beagles’ mandible defects 10×10×10 mm 3 in size. These results suggested that the TCP/PLGC bioresorbable composites could be utilized for GBR and GTR therapy.