Differential Biodegradation Kinetics of Collagen Membranes for Bone Regeneration
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AuthorToledano Pérez, Manuel; Asady, Samara; Toledano-Osorio, Manuel; Benítez García, José A.; Osorio Ruiz, Raquel
Toledano, M., Asady, S., Toledano-Osorio, M., García-Godoy, F., Serrera-Figallo, M. A., Benítez-García, J. A., & Osorio, R. (2020). Differential Biodegradation Kinetics of Collagen Membranes for Bone Regeneration. Polymers, 12(6), 1290. [doi:10.3390/polym12061290]
SponsorshipMinistry of Economy and Competitiveness from Spain MINECO/FEDER MAT2017-85999P; European Union (EU) MINECO/FEDER MAT2017-85999P; Regional Government of Andalusia Research Fund from Spain A-BIO-157-UGR-18
Native collagen-based membranes are used to guide bone regeneration; but due to their rapid biodegradation, this treatment is often unpredictable. The purpose of this study was to investigate the biodegradability of natural collagen membranes. Three non-cross-linked resorbable collagen barrier membranes were tested: Derma Fina (porcine dermis), Evolution Standard (equine pericardium) and Duo-Teck (equine lyophilized collagen felt). 10 × 10 mm2 pieces of membranes were submitted to three different degradation procedures: (1) hydrolytic degradation in phosphate buffer solution, (2) enzyme resistance, using a 0.25% porcine trypsin solution, and (3) bacterial (Clostridium histolyticum) collagenase resistance test. Weight measurements were performed with an analytic microbalance. Thickness was measured with a digital caliper. Membranes were analyzed at different time-points, up to 21 d of immersion. A stereomicroscope was used to obtain membranes’ images. ANOVA and Student Newman Keuls were used for mean comparisons (p < 0.05), except when analyzing differences between time-points within the same membrane and solution where pair-wise comparisons were applied (p < 0.001). Derma Fina attained the highest resistance to all degradation challenges. Duo-Teck was the most susceptible membrane to degradation, complete degradation occurred as soon as 8 h. The bacterial collagenase solution performed as the most aggressive test as all membranes presented 100% degradation before 21 d.