Application Guide

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Dental Model

Application Guide for Printing Angled Orientation

Application: Model
Subtype: Angled
Resin: QuraMODEL 2.0
Software: Alpha 3D

Dental Model Orientations

Dental models may be printed a number of different ways:

A. Horizontal: Accurate, requires the least print preparation time, and prints the fastest for individual prints, but takes up the most build platform space

B. Angled (10-15°): Highest possible accuracy and smoothness, but requires the most print preparation and support cutting time

C. Vertical: Fastest printing method for mass production, but slowest for individual prints

When should I print angled?

The angled orientation is best used when accuracy and smoothness are more important than the time invested to make the print. For example, when aesthetics are important, such as when prints are going to be attached to articulator interfaces and shown directly to patients, then it may be better to print at an angle.

When should I use a different orientation?

In general, the angled orientation takes the most work to set up and to print. The horizontal orientation is not as smooth and may encounter resin leakage holes, but generally meets most accuracy needs without the set up time. More models can be printed in less time with the vertical orientation. If your prints are being used in the lab setting, either other orientation may suit your needs better.

1. Print Analysis

A. Critical Areas – Do Not Support

  • A1- The teeth, any die holes, and the immediate gingival areas are the most important parts of the print, and all print orientations try to avoid putting supports on any of those locations. The angled orientation does not need supports in these locations, unless there is an overhang due to an unusual tooth placement.

B. Intended Support Area

  • B1- In the angled print orientation, the bottom back part of the model, which may include the bottom of an articulator attachment or palate surface, should have thick supports to hold the entire print in place. This surface will be closest to the build platform, so it will have the most force upon it.
  • B2- The rest of the bottom of the print may use automatic supports, with only some manual adjustment.

2. Orientation

A. Start the print in a horizontal position.

  • In Alpha 3D, to place a print flat, select the object, go to Orientation tab, and use the Select Base function.

B. Angle the print so that the back of the model is on the platform, but the front of the model is raised.

  • Angle : 10-15 °

This angle should make the front teeth (incisors) of the model nearly perpendicular to the build platform.

C. Raise the part off the platform.

  • In Alpha 3D, you raise a part along with setting up its supports. Go to the Supports tab, and set the height in the parameters.
  • Support Height: 1.5 – 2.0 mm

3. Supports

When supporting this print, Ackuretta recommends doing the following:

  • A. Start by using Auto Support with the settings shown below.
  • B. Go to Manual Support, and remove supports that are grouped up too thoroughly.
  • C. Add supports to areas that have too few supports nearby.
  • D. Change your support settings to the Base Support settings shown below.
  • E. Remove all supports along the lowest points of the print.
  • F. Add supports to that area using the Base Support size to ensure that area is strongly affixed to the build platform.

Auto Supports

  • Point Size: 0.6 – 1.0 mm
  • Elbow Size: 1.2 – 1.5 mm
  • Bottom Size: 1.6 – 2.2
  • Support Density: 80%
  • Support Height: 1.5 – 2.0 mm

Base Supports

  • Point Size: 1.0 – 1.6 mm
  • Elbow Size: 1.3 – 2.0 mm
  • Bottom Size: 1.6 – 2.5
  • Support Density: 76%
  • Support Height: 1.5 – 2.0 mm

Note

The size may cause some supports to stick through the bottom of the build platform, and will appear blue. This is not a problem. Your print will still print normally.

4. Base

Ackuretta recommends adding a base to almost all supported prints. Adding a base allows the print to stick to the build platform securely, and it makes the print easier to remove during post processing.

  • If you use the General support setting, Alpha 3D automatically adds a small base to every support. This small base is sufficient for most prints.
  • Additionally, you can add a base around the entire print using the Base Thickness setting. This may make it easier to remove the print from the build platform.

Warning

A thicker base does not improve print performance. A base of 0.400 mm or thicker may even make a print less likely to succeed.

5. Print

Arrange all of the models that you want to print, and then go to the Print tab.

  • Select your Layer Thickness. Ackuretta recommends 100 microns.
  • Give your print a Job Name.
  • Click Save.

On your printer, make sure that your settings match what you need for your resin.

Diplo / Ackuray Print Settings

  • Buffer Layers: 5 layers
  • First Layer Curing: ×8

FreeShape 120 Settings

  • Burn-In Layers: 4 layers
  • Burn-In Layer Curing Time: ×3 curing time
  • Z-Axis Peel Speed: 950

6. Finishing

After printing, clean, dry, and cut your print supports.

  • Cleaning Alcohol: Ethyl alcohol (95%) or isopropyl alcohol (99%)
  • Ultrasonic Cleaner or Soak Time: 2 minutes
  • Suggested UV Oven: Ackuretta UV Oven
  • Suggested UV Oven Time: 2 minutes on the bottom side, flip, and then 4 minutes on the teeth side.

Tip

With the Ackuretta UV Oven, hold the start button to use flash curing instead of continuous curing. Flash curing will reduce the resin distortion.