Resilon will biodegrade from lipases released by bacteria or by bacterial or salivary enzymes

By Trope M

Date: 03/2006
Journal: JOE

Summary: 

Trope:

•Sodium ethoxide is highly corrosive material.

•Bacteria in soil, compost, and sludge can degrade polycaprolactone. Resilon was never proposed to replace meticulous cleaning of the root canal.

•No data supporting the existence of sulphur granules in extraradicular infections.

•No claim that any obturating material, including Resilon, can cure extraradicular infections.

Tay reply:

•Sodium ethoxide is a highly corrosive material that is capable of etching even epoxy resin.

•Biodegradation investigation is usually performed in steps, with the initial use of relatively inexpensive screening tools before the use of more expensive and time consuming enzymatic protocols

•In our introduction, we stated that “Because enzymatic hydrolysis occurs slower than alkaline hydrolysis, the latter has been used as a screening tool to examine the degradation potential of aliphatic polyesters before the commencement of more labor-intensive enzymatic hydrolysis studies were attempted.” Had Resilon resisted sodium ethoxide as well as gutta-percha, we would not have proceeded to enzymatic studies.

TayFR,LoushineRJ,LambrechtsP,WellerRN,Pashley DH. Geometric factors affecting dentin bonding in root canals: A theoretical modeling approach. J Endod 2005;31:584 –9.