Permanent Crowns Workflow

Guide for Using Shape X for 3D Printing Permanent Crowns


The following guide provides dental technicians and dentists with instructions on utilizing Shape X for 3D printing durable monolithic full contour crowns and restorations intended for permanent use with Permanent Crown Resin. It is crucial to always refer to the official instructions for use provided in the resin packaging for the essential guidelines.


3D Printed dental Parts

Required Hardware

  • Shape X RP
  • Shape X 3D Printer
  • Shape X Wash/Dry
  • Shape X Cure


  • 3rd Party Dental Lab scanner for dental models or impression.
  • 3rd Party Intraoral scanner for direct patient scan.


Required Software

  • Shape X CAM


  • 3rd Party Dental CAD software for designing restoration.


Required Materials

  • Shape X Permanent Crown Resin.


  • Isopropyl alcohol (IPA) ≥99% .
  • Polishing or glazing equipment and materials

1 >  Scan

In order to design a dental prosthetic using dental CAD software, it is necessary to obtain a digital representation of the patient's anatomy. This can be accomplished by either directly scanning the patient's mouth using a 3D intraoral scanner or by scanning a physical impression or poured model using a desktop 3D scanner.


Intraoral scanner
Lab scanner

2 >  Design

This application guide will provide an overview of two popular dental software options, namely 3Shape Dental System and ExoCAD, which are utilized for digitally designing dental crowns and restorations. It will outline the key parameters of each software.

3shape

3Shape Parameters

Minimum thickness 1.0 mm
Minimum thickness Occlusal 1.5 mm
Cement gap 0.02 mm
Extra cement gap 0.07 mm
Distance from margin line 1 mm
Overlay
Margin line offset 0.15 mm
exocad

ExoCad Parameters

Minimum thickness 1.0 mm
Gap 0.05mm
From margin 1 mm
Additional spacing 0.02 mm
Border
Horizontal 0.15 mm
Minimum thickness Occlusal 1.5 mm

Most dental design software typically generates a manufacturing file in the .stl format. To proceed, you need to find this file and transfer it to Shape X 3D Printer.

3 >  Print

import

> Import your STL File with Add Button

materials

> Choose your required materials "Permanent Crowns Resin " and required layer thickness and Press Submit.

Parameters

Choose your job Parameters "Crowns & Bridge" and press Submit.

align

> Use Automatic nesting, move, rotate to align your crowns to desired position

Support

> Use Automatic support generator to generate support structure for crowns & Bridges. You may also use Add / Remove support to modify proposed support.

Print

> Click on "Start" to generate slices. Then "Print" * to start print process.

Shape X RP

* Before Press "Print" button:


> Please ensure that the black screw of the build platform and the set of two screws that hold the resin container are securely tightened.


> Carefully inspect both the build platform and the resin container film to ensure there is no cured resin present.


> Ensure that the resin temperature falls within the recommended range of 25 to 35°C. Preheat the resin if necessary and mix it thoroughly with Shape X RP. Before use, clean the resin container with a filtration paper if it has been previously used. Additionally, ensure that the resin is not expired and that the quantity in the container is above the indicated minimum level.


4 >  Post Processing

It is important to consistently wear gloves when working with uncured resin and its corresponding parts.

4.1 Part Removal

To remove the printed parts from the build platform, utilize a scraping tool positioned beneath the part raft. By rotating the tool, gently separate the parts from the platform.

Part removal

4.2 Washing

In a well-ventilated area and while wearing appropriate protective masks and gloves, submerge the printed parts in an isopropyl alcohol (IPA, ≥99%) solution within the Shape X Wash/Dry apparatus. Allow the parts to undergo a 3-minute washing cycle.


or submerge the printed parts in an isopropyl alcohol (IPA, ≥99%) solution within a black box. Allow the parts to undergo a 6-minute washing cycle.

shape X Wash/Dry

4.2 Drying

Utilize compressed air to aid in the drying process of the parts, facilitating a quick inspection of unwashed resin remaining after using Shape X Wash/Dry machine.

4.3 Curing

1> While keeping the raft and supports intact, position the printed parts in the Shape X Cure device with the raft side facing downwards. Proceed to post-cure the parts for a duration of 2 minutes.


2> Remove Support structure and raft with cutting disc.


3> Clean Parts from white powder with IPA, then compressed air.


4> Position the printed parts in the Shape X Cure device. Proceed to post-cure the parts for a duration of 2 minutes.


Shape X Cure

4.4 Finishing

Restorations can be completed using two methods.


The first method involves polishing the restoration using diamond polishing paste or utilizing polishing tools like EVE Diacomp® Plus TWIST.


The second method involves applying a glaze liquid such as Shape X glaze or GC Optiglaze, followed by a 1-minute curing process using the Shape X Cure device.


Please refer to the detailed instructions provided for diamond polishing paste, EVE Diacomp® Plus TWIST, Shape X glaze, and GC Optiglaze for specific guidance on each technique.


Finishing

5 >  Complete Job

To secure the restoration in place, it is recommended to utilize a total etch adhesive such as 3M Relyx Ultimate, 3M Relyx Universal, or Ivoclar Variolink esthetic DC. Please refer to the detailed instructions provided for each product to ensure proper usage and follow the recommended guidelines accordingly.

Polished Crowns
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