Sangsu An, orthodontist and Align APAC Faculty

Meet Sangsu An.


Orthodontist · Align APAC Faculty

1,300+ aligner cases · 100+ ClinCheck consulting cases

Invisalign Purple Diamond Provider


Learn the clinical reasoning behind real cases, from treatment planning to troubleshooting and finishing.

Seven sessions. One clinical framework.

Start with Lite. Build a framework for more.


Learn the reasoning behind case selection, space creation, attachments, staging, and additional aligner planning through seven VOD sessions.


Korean edition: available now. English edition: the same course content, coming soon.


Build your foundation with the Masterclass. Reference the Invisalign First guide when you need detail. Use the Helper for repetitive prescription work, and explore 1:1 coaching when you need individual case feedback.

INVISALIGN CLASS vod

See the case. Understand the decisions.

A finished result tells only part of the story. Learn how case selection, space creation, staging, and refinement decisions shape the treatment journey.


The Masterclass uses Lite cases to build a framework for Invisalign treatment planning beyond Lite.