Staging prototype · v0.2

Aligner-style staging, shown on a typodont.

A preset lower-arch crowding is split into small stages, each capped at about 0.25 mm of translation or 2° of rotation per tooth. The tooth that needs the most steps sets the stage count. Overlaps between teeth are flagged at every stage. Tap a tooth to edit its move, or change the limits.

Typodont demonstration — not for clinical useThis page moves teeth on an anatomical atlas model (BodyParts3D) to illustrate how staging works. It is not a medical device, has not been cleared or reviewed by the FDA or a dentist, uses no patient data, and must not be used to plan, make, or evaluate appliances for any person. The per-stage limits are a teaching shorthand from published ranges, not a clinical protocol; many real cases are staged more slowly.

Loading typodont…

Typodont demo · not for clinical use

Stage

0 / 0

TargetStartSelectedOverlapTypodont base

Preset & pacing

Pacing

Selected tooth

–

Start moving after stage

Tap a tooth in the 3D view or a row in the table to select it. The target is the typodont’s aligned position, so editing a move changes where the tooth starts; the view jumps to stage 0 so you can see it.

This stage

–stages

–weeks of wear*

Pacing tooth–

Stages with overlap–

Overlap check–

*Wear estimate = stages × days per stage. An illustration of the arithmetic only, not a treatment-time estimate for anyone.

Staging limits · teaching shorthand

Translation per stage mm Rotation / tip per stage ° Torque per stage ° Days per stage d

Defaults (0.25 mm, 2°, 1°, 14 days) are a classroom shorthand from published ranges, not a clinical protocol. Many real cases are staged more slowly.

View

Target overlay Start: selected tooth Start: all moving teeth Typodont base Overlap points

All teeth (start → target)

Tooth	Translation	Rotation	Tip	Torque	Steps	Starts

FDI numbering, lower arch. Tap a row to select that tooth. Translation is the straight-line distance of the tooth’s centroid; rotation, tip and torque are about the tooth’s own axes. Blue row = the tooth that sets the stage count; red = in an overlap at the shown stage.

Export (demo files)

Exports are for viewing only. They are typodont geometry and a typodont plan, not appliance-ready models, and must not be printed, thermoformed or used for anyone.

How this demo works

Teeth are the 14 lower teeth of the BodyParts3D atlas, each a separate rigid mesh. The target is the atlas position; the preset (or your edits) sets where each tooth starts. Each tooth moves in a straight line with constant-rate rotation, rotating about its own centroid.

Pacing: As fast as allowed moves every tooth at its capped pace and finishes it early. Spread over the plan stretches each tooth’s move across all stages after its start. Hold to avoid overlap is a simple greedy rule that pauses a tooth for a stage when moving it would create an overlap.

Overlap check: every stage, sampled points on each visible crown are tested against a 0.25 mm distance grid of every other tooth. A pair is flagged when it overlaps more than 0.10 mm beyond the contact already present in the atlas target.

Not modeled: roots, bone, ligament, biomechanics, attachments, interproximal reduction, aligner material, occlusion with the upper arch, anchorage, or anything about a real person. Loading your own scans is intentionally not offered.