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Lab talk, the good, the bad, and the ugly
Dental-CAM
Milling Burs. Is there a difference between an expensive bur and a cheap one? What is it?
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<blockquote data-quote="AKDental" data-source="post: 358888" data-attributes="member: 19093"><p>Wow! 500+hours?! My mind just got blown...didn't know that was possible with "any" bur.</p><p>On that note I remember the person who had the mill before me had a pair of burs that i think he said maybe aurident(was a while ago so maybe wrong co) had sent as sample test burs. And he had been using them for a really long time, like maybe 3 or 4 months, something like that. And i thought that</p><p>they were okay because they seemed to cut okay and the guy kept saying they were still good. A problem that i was having was with the crowns coming out with a very tight fit. When I changed the burs, perfect fit on crowns. Felt like punching myself in the face....</p><p></p><p>Also, so I spoke with a guy who was very knowledgable about the process of making milling burs and he had mentioned that one main difference </p><p>in the quality of the bur is the way that the diamonds are sintered or attached to the bur. According to him the really high end burs use a different</p><p>process by which the "diamond coating" is adhered to the carbide bur which results in the diamonds basically staying on there a much longer time.</p><p></p><p>I personally like the "cheaper" burs because of this. If I am having ill-fitting crowns, which happens more often than id like, I find it is very hard to diagnose and can be simple but many times requires many different troubleshooting of different equipment, softwares, etc to find out the reason. And one thing that could always be a problem is the bur. So if i am having a cheap bur in the machine then i don't really care if i just replace the bur and toss the old one. But if i</p><p>have an expensive one, like the $200 bur that I am using from Zahn.(i think i actually paid less but just checked and it is going for $200. jeez.) then i have to put it to the side carefully so i don't knick any part of the cutting areas and don't drop it....just something extra to worry about that i dont like. Yeah, sometimes the cheaper guys sell duds, but if i am using a dud and am having issues them ill just huck that bur and put in a new one.</p></blockquote><p></p>
[QUOTE="AKDental, post: 358888, member: 19093"] Wow! 500+hours?! My mind just got blown...didn't know that was possible with "any" bur. On that note I remember the person who had the mill before me had a pair of burs that i think he said maybe aurident(was a while ago so maybe wrong co) had sent as sample test burs. And he had been using them for a really long time, like maybe 3 or 4 months, something like that. And i thought that they were okay because they seemed to cut okay and the guy kept saying they were still good. A problem that i was having was with the crowns coming out with a very tight fit. When I changed the burs, perfect fit on crowns. Felt like punching myself in the face.... Also, so I spoke with a guy who was very knowledgable about the process of making milling burs and he had mentioned that one main difference in the quality of the bur is the way that the diamonds are sintered or attached to the bur. According to him the really high end burs use a different process by which the "diamond coating" is adhered to the carbide bur which results in the diamonds basically staying on there a much longer time. I personally like the "cheaper" burs because of this. If I am having ill-fitting crowns, which happens more often than id like, I find it is very hard to diagnose and can be simple but many times requires many different troubleshooting of different equipment, softwares, etc to find out the reason. And one thing that could always be a problem is the bur. So if i am having a cheap bur in the machine then i don't really care if i just replace the bur and toss the old one. But if i have an expensive one, like the $200 bur that I am using from Zahn.(i think i actually paid less but just checked and it is going for $200. jeez.) then i have to put it to the side carefully so i don't knick any part of the cutting areas and don't drop it....just something extra to worry about that i dont like. Yeah, sometimes the cheaper guys sell duds, but if i am using a dud and am having issues them ill just huck that bur and put in a new one. [/QUOTE]
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Milling Burs. Is there a difference between an expensive bur and a cheap one? What is it?
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