ABOUT D4

Clinical judgment, made clearer through digital design.

Imaging, scans, photographs, and design records come together in one treatment pathway. They help clinicians see structure, function, and aesthetics as a connected picture, while helping patients understand their concerns and choices. D4 organizes information, communication, design, treatment, and long-term maintenance into one clear clinical plan.

CLINICAL TEAM

Clinical team

Treatment decisions at D4 bring different clinical perspectives into one discussion of information, limitations, patient goals, and long-term maintenance.

The D4 clinical team includes two DSD Master clinicians, one of whom is also a DSD KOL.

This professional foundation works together with D4’s wider experience across periodontics, pediatric dentistry, orthodontics, implant dentistry, aesthetic restoration, and digital technician collaboration, adding further depth to digital design, smile analysis, and complex pre-treatment planning.

Dr. Herman Hsu 许恒恺, D4 clinical team

Dr. Herman Hsu许恒恺

  • DSD KOL
  • DSD Instructor
  • DSD Master
Clinical focus
Digital Smile DesignAesthetic restorations
Education
Bachelor of Stomatology, Shanghai Jiao Tong University School of MedicineBachelor's degree, McGill University
Dr. Christine Chen 陈嘉珮, D4 clinical team

Dr. Christine Chen陈嘉珮

Clinical focus
Clear aligner therapyFixed orthodontics
Education
Master's in Orthodontics, Shanghai Jiao Tong University School of MedicineBachelor of Stomatology, Shanghai Jiao Tong University School of MedicineBachelor's degree, University of Auckland
Dr. Michelle Kao 高敏瑄, D4 clinical team

Dr. Michelle Kao高敏瑄

Clinical focus
Pediatric dentistryEarly orthodontic treatment
Education
Bachelor of Stomatology, Shanghai Jiao Tong University School of MedicineBachelor's degree, University of New South WalesImplant dentistry continuing education, New York University
Dr. Elaine Niu 钮赢颖, D4 clinical team

Dr. Elaine Niu钮赢颖

Clinical focus
General dentistryPeriodontal care
Education
Periodontal and restorative continuing education, Harvard School of Dental Medicine
Dr. Victor Sun 孙庆龄, D4 clinical team

Dr. Victor Sun孙庆龄

Clinical focus
Restorative dentistryImplant restorations
Education
Bachelor of Stomatology, Shanghai Jiao Tong University School of MedicineBachelor's degree, National Taiwan UniversityImplant dentistry continuing education, University of Vienna
Dr. Joy Guo 郭帅, D4 clinical team

Dr. Joy Guo郭帅

DSD Master

Clinical focus
Adult/Pediatric OrthodonticsDigital Smile Design
Education
Master’s in Orthodontics, International Medical College (IMC)Master’s in Dentistry, Semmelweis UniversityBachelor’s degree, McMaster University

Collaboration

D4 case discussions bring together information gathering, facial analysis, intraoral conditions, design validation, and long-term maintenance so different clinical perspectives can form a practical treatment plan.

Explore D4's DSD approach →
The D4 team discussing case records together

Teaching & Education

Teaching Digital Dentistry

Dr. Hsu regularly takes part in clinical education for dental peers, bringing the observation, design, and decision-making behind real cases into live discussion.

Teaching focuses on how information is understood, how a plan is validated, and how clinical limitations shape the final choice.

Teaching connects digital workflows to communication, judgment, and practical clinical plans through ongoing questions and review.

Dr. Herman Hsu discussing case design with dental peers at a DSD workshop

Teaching & Speaking

International Teaching and Exchange

D4's professional practice extends beyond the clinic.

From case design discussions and digital workflow development to interdisciplinary collaboration and teaching, experience grows from real clinical work and deepens through ongoing professional exchange.

Dr. Herman Hsu speaking about facially driven design and clinical decisions

DSD Teaching

From Teaching to Clinical Judgment

Dr. Herman Hsu has long participated in international Digital Smile Design education, case discussion, and clinical application.

His DSD Instructor, DSD KOL, and DSD Master background continues to connect Digital Smile Design, aesthetic restoration, Mockup validation, and pre-treatment planning with clinical judgment and team communication in real cases.

Digital Smile Design and treatment planning →

Dr. Herman Hsu analyzing Digital Smile Design, Mockup, and pre-treatment planning records with doctors and technicians in a case discussion.

International teaching and case discussion continually bring design, communication, and clinical judgment into real treatment workflows and the shared methods used by the D4 team.

Professional Collaboration and Recognition

D4 founder Dr. Herman Hsu has worked with Philips for more than eight years in professional teeth-whitening training and oral-health education.

As a Philips Zoom! invited training lecturer, he has contributed to professional teaching and clinical exchange and received the “ZOOM! Whitening Leader of the Year” honor. D4 Dental Clinic is authorized as a PHILIPS ZOOM! Whitening Experience Center.

Learn about D4 teeth whitening and professional background →
Dr. Herman Hsu teaching at a Philips Zoom! teeth-whitening academic forum.
Dr. Herman Hsu · Philips Zoom! teeth-whitening professional teaching