Academic Staff

Zwahlen, Roger Arthur

Professor Zwahlen, Roger Arthur

MD (Berne), DMD (Zurich), Priv.-Doz. (Zurich); FEBOMFS (UEMS)

Title: Clinical Professor in Oral and Maxillofacial Surgery
Discipline area: Oral and Maxillofacial Surgery
E-mail:
Tel: 2859 0269
Research profiles: HKU Scholars Hub Scopus Researcher ID ORCID

Areas of Research Expertise

  1. Head and neck surgery (quality of life and post-traumatic growth in tumour patients)
  2. Microvascular reconstruction techniques and implantology in oral cavity cancer patients
  3. Innate immunology in oral cavity cancer

Faculty Research Group

Selected Latest Publications

Journal:

  1. TAN SK, Leung WK, Tan ATH & Zwahlen RA. How does mandibular advancement with or without maxillary procedures affect pharyngeal airways? An overview of systematic reviews. PLOS ONE 2017;12:e0181146. doi:10.1371/journal.pone.0181146
  2. Butow KW, Zwahlen RA, Morkel JA & Naidoo S. Pierre Robin sequence: Subdivision, data, theories, and treatment. Part 1: History, subdivisions, and data. Ann Maxillofac Surg 2016;6:31-34. doi:10.4103/2231-0746.186133
  3. Butow KW, Morkel JA, Naidoo S & Zwahlen RA. Pierre Robin sequence: Subdivision, data, theories, and treatment. Part 2: Syndromic and nonsyndromic Pierre Robin sequence. Ann Maxillofac Surg 2016;6:35-37. doi:10.4103/2231-0746.186134
  4. Butow KW, Zwahlen RA, Morkel JA & Naidoo S. Pierre Robin sequence: Subdivision, data, theories, and treatment. Part 3: Prevailing controversial theories related to Pierre Robin sequence. Ann Maxillofac Surg 2016;6:38-43. doi:10.4103/2231-0746.186135
  5. Butow KW, Naidoo S, Zwahlen RA & Morkel JA. Pierre Robin sequence: Subdivision, data, theories, and treatment. Part 4: Recommended management and treatment for Pierre Robin sequence and its application. Ann Maxillofac Surg 2016;6:44-49. doi:10.4103/2231-0746.186136
  6. Jayaratne YSN & Zwahlen RA. The Oropharyngeal Airway in Young Adults with Skeletal Class II and Class III Deformities: A 3-D Morphometric Analysis. PLoS One 2016;11:doi: 10.1371/journal.pone.0148086. doi:10.1371/journal.pone.0148086
  7. LI C, Lu WJW, Seneviratne CJ, Leung WK, Zwahlen RA & Zheng L. Role of periodontal disease in bisphosphonate-related osteonecrosis of the jaws in ovariectomized rats. Clinical Oral Implants Research 2016;27 (1):1-6.
  8. USHIDA K, McGrath CPJ, Lo ECM & Zwahlen RA. Oral cavity cancer trends over the past 25 years in Hong Kong: a multidirectional statistical analysis. BMC Oral Health 2015;15:83. doi:10.1186/s12903-015-0074-y
  9. Jayaratne YS & Zwahlen RA. The Evolution of Dental Journals from 2003 to 2012: A Bibliometric Analysis. PLOS ONE 2015;10:e0119503. doi:10.1371/journal.pone.0119503
  10. Li CL, Lu WW, Seneviratne CJ, Leung WK, Zwahlen RA & Zheng L. Role of periodontal disease in bisphosphonate-related osteonecrosis of the jaws in ovariectomized rats. Clinical Oral Implants Research 2014;27(1):1-6. doi:10.1111/clr.12502

Books and Chapters

  1. Zwahlen RA, Rajandram RK & Jenewein J. Post traumatic growth in oral cavity cancer in relation to positive coping strategies, hope and optimism. In Comprehensive Guide to Post-Traumatic Stress Disorder.2016,pp.1783-1796.
  2. Butow KW & Zwahlen RA. . In Cleft – Ultimate Treatment. Oro-facial and Cranio-maxillo-facial Deformities. Second Edition.2016,.
  3. LI CL, Lu WW, SENEVIRATNE CJ, Leung WK & Zwahlen RA. Role of periodontal disease in bisphosphonate-related osteonecrosis of the jaws in ovariectomized rats. In Clin Oral Implants Res.272016,pp.1-6.
  4. Butow K-W & Zwahlen RA. . In Cleft - Ultimate Treatment.2015,.
  5. Zwahlen RA. Chapter 13: Internal fixation in oral and maxillofacial surgery.. In Handbook of Oral Biomaterials..2014,pp.435-459.
  6. Zwahlen RA. Chapter 6. Entzuendungen. In Facharztwissen Mund-, Kiefer- und Gesichtschirurgie.2013,pp.81-98.
  7. Zwahlen RA. Chapter 14: Frakturen. In Facharztwissen Mund-, Kiefer- und Gesichtschirurgie.2013,pp.195-215.
  8. Zwahlen RA. . In Holistic treatment in oral cavity cancer patients (PhD Thesis - University of Zurich).2009,.

Research Grants

Principal Investigator :

  1. 2016-2018: Three-dimensional Characterization of the Pharyngeal Airway and Evaluation of Postsurgical Changes [General Research Fund (GRF)] (HKD712,767)
  2. 2013-: Epithelial mesenchymal transition (EMT) and its effect in oral squamous cell carcinoma progression [Seed Funding Programme for Basic Research] (HKD84,100)
  3. 2010-: Creating a perfused prefabricated bone by means of using natural vessels and growth factors [AO Foundation Research Fund] (HKD961,680)
  4. 2010-2012: Release of vessel development in heterotopically cultured bone [General Research Fund (GRF)] (HKD626,140)
  5. 2010-: Quality of life, psychosocial adjustment and postraumatic growth of patients with oral cavity cancer and their spouses: a prospective multicenter study [Small Project Funding] (HKD42,000)
  6. 2009-: Influence of non-steroidal anti-inflammatory drug therapy on osseointegration and guided bone regeneration of dental implants [International Team for Implantology (ITI) Research Grants] (HKD347,760)
  7. 2008-2010: Release of vessel development in heterotopically cultured bone [Seed Funding Programme for Basic Research] (HKD119,600)

Co-Investigator :

  1. 2014-: Role of low dose bisphosphonate in compromised host with preriodontal diseases: risk or benefit? [Seed Funding Programme for Basic Research] (HKD35,800) (with ZHENG Li Wu et al)
  2. 2013-: Role of Denosumab in inducing jawbone osteonecrosis on a rat model [Seed Funding Programme for Basic Research] (HKD67,300) (with ZHENG Li Wu et al)
  3. 2013-: Impact of oral bacteria on unmasking bisphosphonate-related osteonecrosis of the jaws [General Research Fund (GRF)] (HKD639,000) (with ZHENG Li Wu et al)
  4. 2012-: Role of oral bacteria in unmasking bisphosphonate-related osteonecrosis of the jaws [Seed Funding Programme for Basic Research] (HKD51,000) (with ZHENG Li Wu et al)
  5. 2011-: Blended learning in Dentistry: 3-D resources for problem-based and case-based learning [Teaching Development Grants] (HKD220,372) (with YANG Yan-Qi et al)
  6. 2009-2012: Roles of costimulatory molecules in pathogenesis and malignant transformation of oral mucosal lesions [Seed Funding Programme for Basic Research] (HKD120,000) (with ZHENG Li Wu et al)
  7. 2009-2010: Oral versus intravenous antibiotic treatment after bimaxillary orthognathic surgery - a prospective, randomized, double-blind, placebo-controlled clinical trial [Small Project Funding] (HKD53,333) (with LO John et al)

Honours and Awards

  1. Fellowship International Board for the Certification of Specialists in Oral and Maxillofacial Surgery. 2016. Zwahlen RA.
  2. Evaluation of a Clinical Session Diary - Student and Staff Feedback - Best Oral Presentation The 24th South East Asian Association of Dental Education, Bangkok, Thailand. 2013. Botelho MG, Bridges SM, Yiu CKY, Zwahlen RA, Ho KL & Chang JWW.
  3. Promotion to Full-Professor with Tenure The University of Hong Kong. 1st March 2011. 2011. Zwahlen RA.
  4. Who's Who in the World; Biographical Record Who's Who Marquis Who's Who Publications Board. Twenty-Seventh Edition 2010. Editor in Chief: Marks FM. 2010. Zwahlen RA.
  5. Who's Who in Medicine and Healthcare; Biographical Record Who's Who in the World. The Marquis Who's Who Publications Board. Twenty-Sixth Edition 2009.. 2009. Zwahlen RA.
  6. Merit award received in October 2007 regarding clinical and scientific contribution to the formation of the dental proceation at the University of Zurich, Switzerland Center for Dental and Oral Medicine and Cranio-Maxillofacial Surgery University of Zurich. 2007. Zwahlen RA.

Editorships

  1. Editorial Board Member (Clinical Oral Implants Research) 2016
  2. Editorial Board Member (Oral Surgery) 2016
  3. Regional Editor Asia Pacific (Craniomaxillofacial Trauma and Reconstruction) 2016
  4. Editorial Board Member (Oral Oncology) 2016
  5. Regional Editor Asia Pacific (Craniomaxillofacial Trauma and Reconstruction) 2015
  6. Editorial Board Member (Oral Oncology) 2015
  7. Editorial Board Member (Oral Surgery) 2015
  8. Editorial Board Member (Clinical Oral Implants Research) 2015
  9. Editorial Board Member (Oral Surgery) 2014
  10. Editorial Board Member (Clinical Oral Implants Research) 2014

Additional Academic Appointments

  1. Honorary Professor (Since 2010 February). Department of Oral and Maxillofacial Surgery, Shenzhen Hospital, Beijing University, Shenzhen, PR China 2010
  2. Visiting Professor (2009 - 2012). Department of Head and Neck Surgery, Sun Yat-sen Cancer Centre, University of Guangzhou, Guangzhou, PR China 2009
  3. Guest Professor (2009 - present). Wuhan University, School of Stomatology, Wuhan, PR-China 2009
  4. Visiting Professor (15-24 April 2009) for two lectures 1) Prosthetic rehabilitation after reconstruction in oral cavity cancer patients and 2) Oral cavity cancer: relations between QoL, psychological distress and dyadic adjustment in patients and their wives. Department of Oral and Maxillofacial Surgery, School of Stomatology, Wuhan University, China 2009
  5. Visiting Professor (23-24 January 2009) for two lectures: 1) QoL, dyadic adjustment and psychiatric morbidity in oral cancer patients and wives and 2) Oral cavity cancer: reconstruction of defects. Head & Neck Surgery Cancer Center, Sun Yat-sen University, Guangzhou, China 2009

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