DM 2 doubts 2017 18

DM 2 doubts 2017 18

Postby drshwetaadvani » Sun Jan 29, 2017 3:21 pm

Cellulose liner

Most common way to provide investment expansion is by using a liner in the casting ring .Traditionally asbestose was used .
Non asbestose ring liner used are :
1) Aluminosilicate ceramic liner .
2) Cellulose paper liner .
The aim of using a resilient liner is to
-. allow different types of investmentbexpansion (act as a cushion)
_. facilitate venting during casting procedure.
_. facilitate the removal of the investment block after casting.&. prevent the distortion by permitting the outward expansion of the mold.

Cushioning effect is th way it allows for expansion
Posts: 2409
Joined: Fri Nov 18, 2011 11:35 am

Limited Access

This thread has 7 replies

To access forum you must be a premium member of Aim MDS. To join visit Aim MDS

Register or Login

Return to Dental Materials

Who is online

Users browsing this forum: No registered users and 1 guest