Digital Smile Design
A smile designed to feel unmistakably yours.
At D4, Digital Smile Design connects facial analysis, dynamic smile evaluation, photography, scans, imaging, Mockup validation, and clinical judgment into one treatment-planning conversation.

Asia's First DSD Clinic
Asia's First, from Shanghai.
Dr. Herman Hsu brought years of DSD study, teaching, and clinical practice back to Shanghai.
In 2020, D4 became Asia's first DSD Clinic.
Today, D4 continues to let design lead clinical care, bringing every discipline together around one smile.
DSD Clinics Certification
Registration number CN20001

1 DSD KOL
DSD Clinics Certification · CN20001
D4 Clinical Team
Six clinicians.One design language.
D4's Digital Smile Design system was established and is led by founder and DSD KOL Dr. Herman Hsu.
DSD Master Dr. Joy Guo works with clinicians in orthodontics, periodontics, pediatric dentistry, implant dentistry, and aesthetic restoration, bringing each discipline into one coordinated plan.
Official DSD sources:
Facially Driven Design
One smile.Harmony across the face.
The face
Proportion, lip line, and smile dynamics.
The teeth
Alignment, shade, shape, gumline, and bite.
The person
Needs, limits, habits, and long-term maintenance.
Patient Journey
From first glance.To the final millimeter.
Mockup / Trial Smile
Experience the Future Smile Before Treatment.
Mockup brings design from the screen into a smile you can see and feel. Adjust the details, then begin with greater confidence.
Treatment Planning
Every Discipline, One Direction.
Orthodontics shapes position, periodontics defines the framework, implants rebuild the foundation, and restorative dentistry completes the finish. Each treatment connects within one coordinated smile design.

Restorative Planning
Design Becomes Real in the Details.
From digital design to clinical care, from clinical planning to technician craftsmanship, D4 carries the first idea through form, material, color, and texture into a real smile.