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That darn UPPER distal molar gets pushed back with occlusion and food impaction. So annoying!
A quick hit on Sprue Position: why you should be in the habit of checking it's position.
The CEREC World is fun and the people are great! Take a look at some of the trinkets collected over the many years.
Really..... you should never do this..... except for maybe... maybe two reasons... :)