# Crown Nesting and Support Optimization
## Introduction
[0] I'm gonna go ahead and load these crowns. Let's pick a few different crowns here. I have this one here that I'm gonna add, let's go ahead and add another one. Let's see. I'm gonna hold control here and add a few at a time here. Let's look. So I got an anterior one and a maxillary one. I'm gonna click open. So I got three crowns, and I'm gonna call it crown and bridge. Let's just do it on the arch kit first, ceramic crown hit prepare.
## Software Analysis
[27] And so the software is now going to be analyzing these restorations and determining the best, most predictable way to support them so you don't have failures. And it did a really good job. There's just a few things I dislike about this that I'll go into. One thing is mainly that the museum sisal corner of the central is not supported. And then it looks like there's a pretty high density of supports on the crowns. And again, that's probably to avoid a print failure and a customer support call.
## Editing Supports
[51] So let's go ahead and go to autopilot off and edit these supports. The orientation is perfect. So it's occlusal surface down, sisal edge down. And so I'm gonna go ahead and go to supports and go to, click one of these and go to add remove individual supports. And one thing I don't like is you see, like, how all of these are so clustered on the incisal edge. Because in printing, they almost be just become one solid block. And so I'm gonna decrease the density here. And honestly, what you really need is four or five support points on the central across the edge evenly spaced out like that. That's gonna be super easy to finish, and they're just gonna peel away much better.
## Adjusting Support Density
[99] Let's go ahead and click on the molar. Now I noticed that sprint radius kinda increased the density of their supports. That's probably to avoid customer support calls, and failures. But I'm gonna get rid of any supports that are touching and clustered together. As a general rule, you don't need supports, four of them in the same spot. Marginal ridges are supported and all the cusp tips are supported. You don't need supports on the transverse ridges. And if you have a really broad functional cusp, maybe you could add a few supports like that palatal cusp. So marginal ridges have one, cusp tips have one. And sometimes I'll put one in the central groove.
## Support Placement Strategy
[142] Depending on the shape of your central groove, if you're unsure, just put one there. So here on the mandible, I'm gonna do the same thing. Get rid of clustered supports. So there's one on the marginal ridge. Cusp tips have one or two supports. You don't need supports on the transverse ridges. And get rid of all your clusters. So that's kind of a better, if not a little bit risky because there's not a ton of supports. But, man, there's just almost no finishing with something like that. Let me hit confirm so we could look at this together.
## Final Adjustments
[178] So I probably add a few more to this one. Let's go to supports, add remove individual. I'll probably add two to these custom tips here and one in the central groove, like I said. This is gonna require super minimal finishing. I don't know why it's erasing. Oh, Raywear Cloud. How I love the okay. Kept at that time. So we basically have a support on each cusp tip, one of the central groove and marginal ridge, and sometimes we double up on the cusps if they're broad cusps like a big molar like this. These are gonna be peel away, easy to finish, super, super predictable, supports.
## Advanced Nesting Techniques
[225] Now what if you want to take it up a notch and say, I don't want any supports on my occlusal surface. How would you nest these? To do that, I'm gonna go ahead and show you how you properly rotate them. So I'm gonna click one and go to, my compass here or my orientation, and you pick the bigger surface. So, for example, on a mandibular molar, you'll pick the buccal because that margin is longer there, and you're gonna rotate down, buccal surface down. So I'm gonna come over here and rotate. You're not perfectly perpendicular like that, in the inlay tutorial. You don't want the contralateral margin to be overhanging at a 90 degree angle to the build plate.
## Proper Rotation
[263] So you're gonna come so if this let's just call this, perfectly perpendicular. You're gonna come at a slight angle like that. And what this is gonna do is it's going to leave this surface of the restoration on the contralateral margin at a good print angle compared to the buccal. And all your buccal is gonna be supported and honestly, these transverse ridges here do not need to be supported. So when I go to AddRemove Individual Supports, I'm gonna take those off. So you basically peel off these buccal supports, polish it really quick, and you're off to the races with a beautiful anatomy that's unadulterated from having distortions from support tips.
## Maxillary Tooth Nesting
[311] Now on a on a maxillary tooth, you also find the longer surface that depends on how your tooth was prepared. In this particular case, it's the buckle again. So same thing, if I rotate perfectly perpendicular to the build plate, if the build plate is considered the horizon, what happens is if we did something like this, let me just show you, You're gonna have the need for supports on this surface. Watch. If I go to my supports and I go to, click this and I go to add remove, look at how red that surface is. And you can't add supports there because it's in a location that is blocked from the other margin.
## Avoiding Overhangs
[350] So you it won't actually let you even add them there. That that is a problem. You wouldn't want supports there anyway. So how do we combat that? Well, basically, the same way we did this, we're gonna rotate this at a slight angle. No more than 45 degrees, that would be extreme. More like a 25, 20 to 25 degree angle. And because you don't wanna overhang these lingual cusps too much, but you wanna make this margin principal so it fits well. So it's a fine balance between that slight rotation and, having, too much rotation where then your marginal will fit great, but your customers will be distorted here as they're overhanging from the build plate, the cantilever.
## Creative Nesting
[397] And so these are really creative ways to nest. Now the central, you basically nest it this way every single time. You don't you don't rotate and overhang a central. For example, it would be really bad to have a central printed like this because you're gonna have a lot of supports on your buccal anatomy, and that's gonna ruin all the surface texture that was spent, in design software getting to be perfect. And it's just not a good way to nest these anteriors. So for anteriors, you're just always going to be incisal edge down like that.
## Midas Nesting
[421] Now the way that we nest these in the Midas is identical. So, I'd like to do it the creative way. So if I go to my setup and I switch over here from the pro two to the Midas, and we're going to actually keep that rotated style of orientation for those molar restorations like this, That is going to be a beautiful I mean, you probably will never see anatomy look that good out of anything ever because it's gonna come out exactly the way you designed it with this detailed gorgeous anatomy there. And it's quite remarkable how minimum finishing you have to do on these. Just a little bit of a glaze or a candy coat, a little bit of characterization or a hand polish goes a long way, with some materials that are coming out.
## Final Thoughts
[479] So this is how I would nest it on the Midas if I was doing it on the Midas. Now you might be able to do something creative like push this over here and swing that like this. That, I don't think I'm gonna be able to squeeze two restorations on this build plate. No. Usually with the Midas, I'm finding I get one crown. Two anteriors are possible, but an anterior and posterior is not. For example, let me just go to this anterior. I could duplicate that. So I come over here and I could actually, go to my files, duplicate and drag it over here so you could see.
## Conclusion
[526] The main thing is you just don't want your crowns overlapping, and you wanna make sure your supports are all within the confines of the build plate. So you might have to do some fancy rotations, maybe like that. And I'm just gonna get them to be almost kissing. Yeah. Let's do this, guys. We gotta be able to figure out how to get these to be able to print on one capsule. So the space that you need between the two restorations is at least 200 microns or else the software will glue them together, and you'll you'll have to peel them apart. So this looks really good. You need to see a little bit of daylight between the two restorations. Again, also, you get slight overburn and bonding them together. So that's how you could sneak two restorations out of one capsule. These are looking really gorgeous. I can't wait to print these. Look, they're all gonna print in nine minutes. Okay. That's how I nest full coverage crowns in any slicer. Again, I've been gearing myself more towards the creative angles than just the occlusal down to help minimize finishing on, the delivery of the restoration.
