Forums
New posts
Search forums
What's new
New posts
Latest activity
Articles
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Lab talk, the good, the bad, and the ugly
Metal
High Noble Gold Porosity.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="charles007" data-source="post: 9173" data-attributes="member: 9"><p>Rob,</p><p>Great to see that you finished that case, very nice........ </p><p></p><p> Rob, its not that I disagree with venting, just takes extra time, I use to vent most of my cases many years ago.. I don't anymore ...... On your case, I would have used two sprues on the linguals of your molar for sure.....I forgot the molar was a very heavy wing pontic = easy to get porosity. For me, the heavier or larger the molar, the easier it is to get porosity. I'm talking about molars that might weight 3 to 4.5 dwt. I used to use Ivoclar's red 6g reservior sprues, looks like yours, but I would still see porosity on large molars sometimes. What I learned is these big fat sprues don't always keep you from getting porosity. Large molars, or large pontics may need 2 sprues. Now I use a smaller reservior sprue (Renfert Geo Wax casting sprues, (pear shape) and flair the wax connection on the lingual cusp, I think the flairing of wax keeps me from getting porosity. I never have porosity problems.......</p><p>Your sprues are ok !!</p></blockquote><p></p>
[QUOTE="charles007, post: 9173, member: 9"] Rob, Great to see that you finished that case, very nice........ Rob, its not that I disagree with venting, just takes extra time, I use to vent most of my cases many years ago.. I don't anymore ...... On your case, I would have used two sprues on the linguals of your molar for sure.....I forgot the molar was a very heavy wing pontic = easy to get porosity. For me, the heavier or larger the molar, the easier it is to get porosity. I'm talking about molars that might weight 3 to 4.5 dwt. I used to use Ivoclar's red 6g reservior sprues, looks like yours, but I would still see porosity on large molars sometimes. What I learned is these big fat sprues don't always keep you from getting porosity. Large molars, or large pontics may need 2 sprues. Now I use a smaller reservior sprue (Renfert Geo Wax casting sprues, (pear shape) and flair the wax connection on the lingual cusp, I think the flairing of wax keeps me from getting porosity. I never have porosity problems....... Your sprues are ok !! [/QUOTE]
Insert quotes…
Verification
Who makes the popular shade guide?
Post reply
Forums
Lab talk, the good, the bad, and the ugly
Metal
High Noble Gold Porosity.
Top
Bottom