Dental Lab Network

Home Forums Classifieds Links Today's Posts
Go Back   Dental Lab Network > Lab talk, the good, the bad, and the ugly > Misc

Misc Stone, investments, burs....

Reply
 
LinkBack Thread Tools Display Modes
Old 02-07-2008, 12:12 PM   #1 (permalink)
Junior Member
 

Join Date: Nov 2007
Posts: 7
Gallery: 0
Rating: 0% (0)
Rep Power: 0 Baker is on a distinguished road
Default too tight crowns for PFMs

Need to know what the labs are using as far as investment for PFM's. We are getting to tight of fit. Looking for an investment that is stable and that will fit. We use ringless, fastfire investment, and up to 4 wax patterns per ring (90gram rings). Please inform me what investment you use, How many wax patterns you use in a 90gram ring , fast burn out or slow? And what is a good noble metal and investment?
Thanx for your help.
Baker is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-27-2008, 02:31 AM   #2 (permalink)
Supporter
 

Join Date: Oct 2007
Location: LA, California
Posts: 27
Gallery: 0
Rating: 0% (0)
Rep Power: 0 clearH2O is on a distinguished road
Default

Hi Baker, I use Bego investment. Tight fit may start from die, from wax, from burn out technique, from investment or metal. To my opinion, check your die stone expension first then check your water/powder ratio. You may add die spacer to loosing the fit. Check your metal expension too. For investment, water will do the trick to expension. More water>>>less expension and less water >>>more expension. I use both techniques fast and slow and follow strickly to manufacturer directions. Depend on its sizes I can add or reduce the number of wax paterns in 90gr ringless mould. Jensen Nobble metal I use giving me good result for my PFMs and that is all I can say to response to your question. I hope its help.
clearH2O is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 07:32 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.1.0
All posts and attachments are the responsibilities of their owners and not of this site.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35