Overview
The software provides an individual pre-design workflow for designing temporary crowns. The logical and efficient workflow simplifies the designing process of temporary crowns. Furthermore, the design files can be seamlessly imported to the Shining 3D printers to produce the final products, which enhances user experience and work efficiency.
How to design a temporary crown?
STEP 1: Create an order
Users can refer to the previous article: Create Orders.
The CreTemp can be only enabled in the restoration dentistry type.
Then, users need to select the teeth position as "full crowns", where the temporary crown should be inserted. This position should be prepared well. Next, set the antagonist.
STEP 2: Scan
Collect the data of single jaws and the bite.
Please ensure that the prepared position is refined to show a clear marginline. Users can refer to the previous articles: Refined Scan.
STEP 3: Adjust models
Please refer to the previous article: Adjust Model, and ensure a correct bite, which helps design a proper and comfortable crown. Please refer to the previous article: Cord Adjust.
STEP 4: Design a temporary crown
1. Extraction of marginlines
Double-click the target tooth to generate the marginline automatically. Please ensure the blue line shows the correct margin. Users can move the points on the line or long-press anywhere on the line to generate a point to modify the marginline. Users can also double-right-click the red points to dismiss them. After confirming, click “Next”.
Tips: Even though the extraction of marginlines has been conducted in the pre-design stage, it is still necessary to confirm here.
2. Insertion path
The insertion path can influence the effects of the temporary restoration, and the determination of the insertion path should consider the position, morphologies, inclination, undercut, and surrounding environment. Rotate the model to a certain view and double-click the blue arrow above the tooth to adjust the insertion path. Please ensure the insertion path is appropriate, and there is no obvious undercut that will lead to a failure of insertion. After confirming, click “Next”.
3. Position adjustment
A temporary crown is automatically generated to cover the prepared tooth. Users can double-click the crown to adjust it. In this step, users need to design a primary morphology, determine the forced side, and decide a proper position.
- Scale: Drag the green squares on the green plane to scale the crown.
- Flex: Drag the above square to change the height.
- Incline: Drag the orange sphere to incline the crown.
- Shift: Drag the crown to move on the jaw.
- Shape: A brush is provided for shaping the crown. Drag anywhere of the crown to change the shape of the part. The brush size can be adjusted by a threshold bar at the bottom of the interface.
Tips: Hints for setup
- The size of the crown is proper.
- The position of the central groove is proper.
- The forced side is correct.
- Contact the interproximal teeth with surface instead of points
4. Crown design
More specific parameters can be adjusted to modify the temporary crown in the crown design stage. In this step, users must adjust the interproximal contact, detailed shapes and stress conditions.
（1）Sculpture: Sculpture tools are applied to improve the shape and morphology of the crown and make it similar to a real tooth.
- Extrusion: Thicken the outer surface of the crown.
- Intrusion: Thin the outer surface of the crown. It can be also applied in modifying the groove on teeth with the smallest size and the lightest strength.
- Smooth: Smoothen the outer surface of the crown.
Tips: Yellow parts
If yellow parts appear on the crown, it indicates an extremely thin layer of the crown, and the crown should be thickened.
（2） Parameters adjustment:
The inner wall reverse gap and the inner wall edge width can be adjusted.
The inner wall reverse gap refers to the prepared spacing for adhesives. The spacing should be appropriate. If it is extremely distant, the adhesives would leak from the cabin and be melted by saliva, causing the vibration of the crown.
The inner wall edge width refers to the width of the bottom edge, which indicates the thinnest part of the crown. If its width is extremely thin, there is a risk of breaking.
（3） Section view:
A section is provided for measuring the distance between any 2 points. Dragging the section to anywhere and select points from the sub-window to obtain the distance. The section view enables users to learn the specific distance between the temporary crown and the prepared tooth.
（4） Interference detection
The interference detection can present the occlusion and contact status of the target tooth and contact teeth. We recommend users turn on the interference detection because it can present clear contact information for the crown and users can adjust the crown in time.
（5） Marginline
The function can show green marginlines for teeth. It is advantageous for checking the cover rate of the crown. If there are some remaining parts, the aesthetic needs cannot be met.
STEP 5: Print
After checking the temporary crown in the occlusion view, users can print the crown with Shining 3D printers. Click the “To print” button to enter the interface of printing. Adjust the parameters and click the “send” button to connect the AccuWare.
