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Using the Bracket Placement Tab to Adjust Bracket Positions

The Bracket Placement tab has three rows, each for a movement type:

• occlusal (+) / gingival (-)
• mesial (+) / distal (-)
• angulation crown mesial (+) / distal (-)

Both the Upper and the Lower tooth charts are shown on the tab.

For an IDB tray simulation the reference points for the initial values in the table cells are as follows:

• occlusal (+) / gingival (-) values correspond to those in the Bracket Height sets you applied when you started the simulation
• mesial (+) / distal (-) all initial values are set to 0
• angulation crown mesial (+) / distal (-) all initial values are set to 0

These values change from their initial starting values as you adjust bracket positions.

Note: To prevent erroneous values that can distort your IDB straight wire simulation, we’ve added restrictions to the values you can enter for each tooth. Translation cannot exceed 10 millimeters per tooth. Angulation cannot exceed 90 degrees per tooth.

Multiple ways to adjust bracket positions

Up/down arrows in each table cell or up/down arrows on your keyboard - Select a bracket on the 3D model or in the tooth chart in the Bracket Placement tab. Place your cursor over the movement type cell on the tab and then click the up or down arrow next to the cell or on your keyboard to reposition the bracket in increments of 0.1 mm (horizontal or vertical) or 1 deg.(angulation).

Tip: Click the Undo button to reverse your changes incrementally.

Use the 3D model - Use the controls on the bounding box for a bracket to adjust its position. The values for the three movement types in the tooth table on the Bracket Placement tab change accordingly.

Tip: Click the Undo button to move the bracket back to its previous position.

Type directly into the tooth chart - Enter a value for a movement type directly into the appropriate cell on the Bracket Placement tab.

Tip: Click the Undo button to revert the cell to its previous value.

To move multiple brackets occlusally / gingivally at once:

1. Locate the cell of the table at the intersection of the tooth number column with the row for occlusal / gingival movement.
2. Click the cell to highlight.
3. Press and hold the Shift key, and click in another cell in the same row to achieve the same movement for multiple teeth.
4. Under the Edit Selection controls to the right of  the chart, type a new value.
   OR
   Click the small up and down arrows (first set) to change to the number required.
5. Click the equal button to apply the typed value to the highlighted cells.
   OR
   Click the large up arrow (second set) to increase the typed value in each of the highlighted cells.
   OR
   Click the large down arrow (second set) to decrease the typed value in each of the highlighted cells.

Measurement options for bracket height sets

When you are adjusting the height of the brackets in a bracket set from the Brackets/Attachments tab you can toggle between:

• Jig Height -  indicates the height of a bracket in millimeters as measured from the middle of a bracket slot to the:

• • incisal edges for central incisors and laterals
  • buccal cusp for canines and premolars
  • most prominent buccal cusp for posterior teeth

Distance to the slot is expressed as a positive number.

• FA Point - shows the height of the bracket relative to the FA (Facial Axis) point. The system expresses movements in an occlusal direction relative to the FA point as positive numbers. Movements in a gingival direction relative to the FA point are expressed in negative numbers.

Keyboard shortcuts

Use the following keyboard shortcuts to help you work faster when on the Bracket Placement tab

• Arrow Up or Down increment or decrease cell values by:
• • 0.1 mm
  • 1 degree
• CTRL+arrow moves the cursor from one cell in all four directions to another cell.
• Tab selects the cell to the right. If you are in the last cell of a row, cursor jumps down to next row.
• SHIFT+Tab selects the cell to the left. If you are in the last cell of a row, cursor jumps up to next row.
• Pg Up selects the cell above.
• Pg Dn selects the cell below.

Auto-adjust view

The Auto-Adjust View check box on the Bracket Placement tab automatically repositions the model when you select a cell in the Bracket Placement tab.

This check box works as follows:

• If you are adjusting mesial/distal bracket movements, an occlusal view of the arch is displayed and the selected tooth is shown in the center of the screen.
• If you are adjusting angulation or occlusal (+) / gingival (-) movements, a labial view of the arch is displayed for the anteriors, a buccal view is displayed for the posteriors, and the selected tooth is in the center of the screen.
• If you uncheck the check box, and then check it again, it remembers the last tooth previously selected and returns to that position.