Smile Simulator Medical References
NORELLE INTERACTIVE ATLAS
The Smile Atlas Explore the muscles and facial nerve branches that produce a smile, then simulate how proximal, selective-branch, or muscle-level weakness changes facial movement.
Simulate paralysis Reset atlas
4 visual layers 16 interactive muscles 6 nerve lesion levels 7 facial nerve targets Normal symmetric smile Patient right Patient left
SELECTED MUSCLE
Zygomaticus major
Origin Lateral zygomatic bone.
Insertion Modiolus and skin/muscle at the oral commissure.
Action Elevates and draws the oral commissure superolaterally.
Role in smiling Principal dynamic elevator of the oral commissure during smiling.
Weakness pattern Reduced superolateral commissure excursion and smile asymmetry toward the stronger side. Anatomic variability Anatomic studies demonstrate variable zygomatic-versus-buccal branch supply; the weights are an educational overlap model, not a patient-specific prediction.
[3] [4] [13] SELECTED NERVE
Buccal branch group Cheek, upper lip, circumoral muscles, and oral commissure.
Reduced commissure and upper-lip excursion Reduced cheek compression Possible oral incompetence Important: The buccal branch often consists of multiple intercommunicating rami and shares targets with zygomatic and marginal branches.
[4] [5] CURRENT SIMULATION
No lesion Both sides receive the same expression program.
Symmetric brow, eye, commissure, lower-lip, and neck activation. [8] [10] Educational simulation. The visualization models qualitative patterns of extracranial peripheral facial motor weakness. It is not a diagnostic test, a validated biomechanical patient model, or a substitute for examination by a facial nerve specialist.
4visual layers
16interactive muscles
6nerve lesion levels
7facial nerve targets
Normal symmetric smile