• Professor and Chairman, Dentistry and Oral Maxillofacial Surgery, Far Eastern Memorial Hospital
• Professor Emeritus, School of Dentistry, College of Medicine, National Taiwan University
• Visiting Staff of Oral and Maxillofacial Surgery, Department of Dentistry, NTUH

• Specific clinic for salivary glands,
• Orofacial deformity
• Dental implant
• Oral maxillofacial tumors
• Oral cancer, oral submucous fibrosis (OSF) and other oral soft mucosa disease.

• 1967 B.M.D. School of Dentistry, College of Medicine, NTU
• 1978 D.D.Sc. Tokyo Medical and Dental University, Japan

• 1995-1997 President, Academy of Oral Implantology, Republic of China
• 1999-2001 President, ROC Association of Oral and Maxillofacial Surgery
• 1995-2007 Chairman of Oral and Maxillofacial Surgery, Department of Dentistry, NTUH
• 1978-2007 Lecturer, Associate Professor, Professor, School of Dentistry, College of Medicine, NTU
• 1968-1973 Resident, Chief Resident, Visiting Staff, Department of Dentistry, NTUH