Made of little things.

# Mouth data attribution

BodyParts3D, © The Database Center for Life Science licensed under CC Attribution
4.0 International.

- Source: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/download.html
- Current license statement: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/lic.html
- License: https://creativecommons.org/licenses/by/4.0/
- Numbering reference: https://ndhcb.uplifterinc.com/pages/ndhce/exam-prep/

The official license page changed to CC BY 4.0 on 2025-02-27. Older OBJ headers
say CC BY-SA 2.1 Japan; this adaptation uses the current license offered by the
original archive. Keep this attribution with the bundled data.

The mouth layer contains 28 permanent teeth (FJ1254–FJ1281) and a tongue (FJ2761)
from the BodyParts3D 4.0 ISA 99% archive. It also copies the already reduced
mandible and maxillae from this repository's skeleton asset. Modifications are
coordinate conversion, head-relative placement, explicit FDI labels, binary
packaging and illustrative hinge motion at runtime. Teeth and tongue retain the
source archive's triangle topology; existing skin/skeleton assets are unchanged.

This is reference anatomy, not a patient scan or a clinically validated model.
Roots are exposed in the atlas. Gums, palate and wisdom teeth are not modeled.
The tongue follows the lower jaw rigidly, and opening uses a simple hinge rather
than physiological TMJ movement. The skin face does not open. There is no child
dentition or per-patient missing-tooth representation in this slice.

`provenance.json` records source and output hashes. Rebuild using Python's standard
library: `python3 scripts/prepare-mouth.py /path/to/isa_BP3D_4.0_obj_99.zip`.
The app's MIT license does not replace this separate asset attribution license.