Understanding Curves / Surfaces & Restoration Types

Margin Line / Prep-line

Color: Pink

Type: Curve

Where it needs to be: 
around the cavity / exactly on the margin line

What does it do? 
separate internal / external operations on the strategy. Identify the correct orientation (Pink arrow with circle) to mill the internal cavity in order to achieve a better internal milling.

Optional or Mandatory? 
Mandatory for objects with cavities

NOTE: The pink arrow with circle can be hidden, but will always be present as long as the margin line is present

Drilling Axes

Color: Green

Type: Curve

Where it needs to be: 

In the center of the cylinders that will require drilling / center of screw channels

What does it do? 

Identifies the cylinders that will be used for drilling operations

Optional or Mandatory? 

Mandatory for objects with drilling channels / cylinder holes

Emergence Profile Curve

Color: Blue

Type: Curve

Where it needs to be: 

In the edge of the Emergence Area end

What does it do? 

Delimitates the end of the Emergence Area (Green area)

Optional or Mandatory? 

Optional

Emergence Profile Area

Color: Green

Type: Surface

Where it needs to be: 

Between the margin line or identification of the abutment and the emergence profile curve (Blue curve)

What does it do: 

Applies a different strategy in this area in order to obtain a better quality surface.

Optional or Mandatory? 

Optional

Red Caps

Color: Red

Type: Layer

Where it needs to be: 

At the end and the beginning of every cylinder / screw channel (Never inside cavities)

What does it do? 

Blocks the cylinders entrance to avoid issues with some operations going inside the drilling channels.

Optional or Mandatory? 

Mandatory for objects with screw channels / holes

NOTE: Can be hidden (Key Combo: Ctrl + R)

Secondary Axis

Color: Pink

Type: Arrow

Where it needs to be: 

At the top of Abutments, Hybrid Abutments or Bars

What does it do? 

Identifies the orientation to finish the top-cap of an abutment. 

These should not be present on screw-retained crowns (with anatomy).

Optional or Mandatory?

Optional but highly advised for abutments, hybrid abutments or bars

Screw Channel Profile (Angled)

Color: Purple

Type: Curve

Where it needs to be: 

At the base of angled screw channels or along the screw channel profile on any implant case.

What does it do? 

Identifies the boundary for the drilling and hole finishing operations. 

When working with Angled Screw Channels in MillBox, the hole profile shifts from being cylindrical to oblong or ellipsoid in profile. 

Pictured below is the top-down view of an angled screw-channel with the bore diameter visualized: Because of this unique shape, the drilling operation needs a new boundary and profile to use:

This curve should be detected at the base of the detected screw channel but in some cases could be along the screw channel (the depth of the operation is determined by the drilling axis):

For information on how to place this curve - see: Draw Cylinder

Optional or Mandatory?

Mandatory for any cases with Angled Screw Channels

Interface Identification

Color for: 

Internal Connection: Orange
External Connection: Blue
Replace/Identified Connection: Yellow

Type: Interface / Connection

Where it needs to be: 
Properly identifying all the connection / interface of the implant

What does it do? 

Identify the connection / interface of the implant to apply the proper operations on that

Optional or Mandatory?

Mandatory for abutments and implant objects

Implant objects vs Hybrids objects

The presence of a screw stop is what sets a hybrid abutment apart from a regular abutment (Implant objects). Hybrid objects lack a screw seat; instead, the screw is seated on the TiBase, which will be cemented onto the milled part. In contrast, abutments and other implant objects have a screw seat and do not require a cemented TiBase.

Hybrid Objects	Implant Objects
Hybrid Abutment No Screw Seat (Passing)	Abutment (Implant object) Screw Seat is present	Rosen Abutment Tapered Screw Seat is present
In the above images, there are no rest-seats for the screw head on Hybrid Abutment. These restorations will be paired with a pre-manufactured Ti-Base	In the above images, we can observe sharp cornered (90 degree) rest-seats for the screw head. In order to mill these out properly, you will need Flat Tooling.	In the above images, we can see a chamfered or tapered rest-seat for the screw-head. This will distribute stress differently in the prosthetic. This geometry requires a special toolpath that is only present for Implant Type restoration types.

Metadata

Typically, CAD programs export metadata files in addition to STL files; these files are vital for the CAM to read and import the appropriate surfaces and curves for your restorations. Even without the metadata files, MillBox's automated detection can produce curves and surfaces; however, in certain particular cases / workflows, these files might be necessary.

NOTE: STL files and metadata files must be in the same directory and must share the same file name (not file extension).

Restoration Types