کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3149871 | 1197483 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Susceptibility of a Polycaprolactone-based Root Canal-filling Material to Degradation. III. Turbidimetric Evaluation of Enzymatic Hydrolysis
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
دندانپزشکی، جراحی دهان و پزشکی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Susceptibility of a Polycaprolactone-based Root Canal-filling Material to Degradation. III. Turbidimetric Evaluation of Enzymatic Hydrolysis Susceptibility of a Polycaprolactone-based Root Canal-filling Material to Degradation. III. Turbidimetric Evaluation of Enzymatic Hydrolysis](/preview/png/3149871.png)
چکیده انگلیسی
The susceptibility of Resilon (Pentron Clinical Technologies, Wallingford, CT) to biotic biodegradation by two hydrolases, lipase PS and cholesterol esterase, was investigated with a turbidimetric approach by measuring the optical density reductions in aqueous emulsions containing dissolved, filtered, surfactant-stabilized polymeric components of Resilon. Polycaprolactone, the major polymeric component of Resilon, was also examined in a similar manner using equivalent or a four-fold increase in enzyme concentration. Optical density time plots were characterized by an initially linear steep reduction in optical density, from which the reaction rates were derived. For both enzymes, the rates of hydrolysis for Resilon were much faster than those of polycaprolactone at 1Ã or even 4Ã enzyme concentration. Field-emission scanning electron microscopy of air-dried Resilon and polycaprolactone emulsions revealed the presence of spherical polymer droplets that appeared deformed, pitted, or much reduced in dimensions after enzymatic hydrolysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Endodontics - Volume 33, Issue 8, August 2007, Pages 952-956
Journal: Journal of Endodontics - Volume 33, Issue 8, August 2007, Pages 952-956
نویسندگان
Noriko DDS, PhD, Joyce Y.Y. BSc, MSc, Robert J. DDS, Steven R. DDS, MS, R. Norman DMD, MS, Nigel M. BDS, MSc, PhD, David H. DMD, PhD, Franklin R. BDSc (Hons), PhD,