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Spectroscopic study on the enzymatic degradation of a biodegradable composite periodontal membrane

✍ Scribed by Matteo Reggiani; Paola Taddei; Anna Tinti; Concezio Fagnano

Publisher
Wiley (John Wiley & Sons)
Year
2004
Tongue
English
Weight
91 KB
Volume
74
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

The enzymatic in vitro degradation of a commercial biodegradable hydroxyapatite (HA)‐polymer (poly(ε‐caprolactone)‐poly(oxyethylene)(POE)‐poly(ε‐caprolactone) block copolymer) composite membrane was investigated by Raman and IR spectroscopies in two enzymatic solutions at 37°C: esterase and α‐chymotrypsin in saline phosphate buffer (SPB, pH 7.4). The degradation was found to be faster in the enzymatic medium than in SPB and alkaline solutions. The fastest degradation rate was observed in esterase solution. The trend of properly chosen Raman and IR intensity ratios was evaluated to go deeper inside the degradation mechanism: both polymeric and apatitic components were found to be involved in degradation. The former underwent preferential degradation of POE blocks, while HA is removed by the degradation medium faster than the polymer. Vibrational spectroscopy proved a valid tool for investigating the degradation of the membrane. © 2004 Wiley Periodicals, Inc. Biopolymers, 2004

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