Overview
CreSplint 2.0 offers enhanced flexibility in adjusting margin lines to accommodate customized requirements. With various preset types and adjustable parameters, users can precisely tailor the margin lines to suit individual patient conditions. This article provides guidance on efficiently adjusting margin lines.
How to adjust margin lines?
STEP 1: Preset margin lines
In the quick creation stage, the software requires users to determine a margin line style. Users can determine the style according to the real situation. In general, these styles can be applied to different cases.
- Half coverage: for patients with protruding anterior teeth;
- Half anterior/Full posterior coverage: for patients with protruding anterior teeth;
- Full coverage at the gingival zenith: for patients with small undercuts to strengthen the retention force;
- Full coverage scalloped: for patients with normal undercuts.
Then, the primary splint or retainer can be generated.
STEP 2: Check margin lines
Turning back to case parameters, the margin lines may contain blue and orange lines:
Color | Explanation |
Blue | Margin lines along with the tooth surface |
Orange | Margin lines above the tooth surface |
Users can use various visualization tools to check the margin lines.
- Undercut depth
The undercut tool visually represents the undercut ribbon, with distinct colors effectively highlighting the distribution of undercuts.The insertion path is defined according to the principle of minimizing undercuts, with the aim of distributing them as uniformly as possible.
Besides, the insertion path can be adjusted by rotating the view and double-clicking the arrow. Then, a new undercut map can be generated.
- Sectional view
A section is provided to freely measure the distance between any two points in the sub-window.
At present, the software enables users to freely generate a section by drawing a straight line on the model.
STEP 3: Refine margin lines
For refining, there are 2 modes to select. The modification of margin lines is carried out in real-time, enabling users to make continuous adjustments without waiting for the completion of the previous step.
- Control point
Users can adjust the margin line by moving the points along it. Additionally, a new control point can be created by long-clicking anywhere on the blue lines. This functionality helps to prevent the formation of excessively sharp segments.
- Draw
In this mode, users can generate a new margin line by long-clicking on an existing point and dragging the cursor to another location. This feature facilitates the efficient design of margin lines for posterior teeth.
STEP 4: Adjust the height
The labial and lingual heights can be adjusted by moving the cursor. For retainers, it is necessary to select the arch to adjust.
STEP 5: Adjust parameters
Thickness and retention strength can be adjusted.
- Occlusion thickness
0.6-5mm. The thickness of the occlusion side should be adjusted according to the treatment target. In general, it should be thicker than the wall thickness.
- Wall thickness
0.6-5mm. The thickness of the lingual side and buccal side. In general, it should be thinner than the occlusion thickness.
- Keep undercut angle
0-90º. With increasing angles, the retention strength will increase.
- Spacer
0-0.3mm. The distance between the splint and the tooth surface. The larger the gap, the less retention strength.
Tips: Regarding retainers, the thickness of the anterior and posterior teeth can be individually adjusted. Generally, the thickness of the anterior teeth is greater than that of the posterior teeth. Additionally, a minimum thickness of 0.6 mm is set as the standard.
