Skip Ribbon Commands
Skip to main content

Dr Ng Ethan Yi Kai

Dr Ng Ethan Yi Kai

DMD (Sydney)

MDS (Periodontology) (Singapore)​

Associate Consultant

Clinical Appointments

  • Associate Consultant Periodontics, Department of Restorative Dentistry National Dental Centre SingaporeNational Dental Centre Singapore


Dr Ethan Ng is an Associate Consultant in the Department of Restorative Dentistry at the National Dental Centre Singapore (NDCS) and is a Dental Specialist in Periodontology in the Periodontics Unit.

He obtained his Doctor of Dental Medicine from the University of Sydney in 2015. Following two years of hospital and polyclinic rotations as a Dental Officer, he began post-graduate residency training and was awarded the NDCS Residency Training Programme Scholarship. In 2021, he completed the Master of Dental Surgery (Periodontology) at the National University of Singapore. The same year, he was also successful in the Membership examination in the Specialist Dental Practice discipline of Periodontics, with the Royal Australasian College of Dental surgeons. Dr Ng completed his 6-year specialist training in Periodontology at the National Dental Centre Singapore in 2024 and is a Singapore board certified periodontist.

Besides clinical work at NDCS, Dr Ng is actively involved in research to further his field. He has published several articles in internationally peer-reviewed journals and received several publication awards. Dr Ng believes in comprehensive treatment planning with shared treatment targets to maximally improve a patient’s quality of life, in the least invasive manner possible.


  • Master of Dental Surgery (Periodontology), National University of Singapore (2021)​
  • Doctor of Dental Medicine, University of Sydney (2015)
  • Bachelor of Science (Honours 1st), University of Sydney (2011)
  • Bachelor of Science (Double major in Genetics and Pharmacology), University of Melbourne (2008)

Professional Appointments and Committee Memberships

  • Associate Consultant, , Periodontic Unit, Department of Restorative Dentistry, National Dental Centre Singapore, 2024 – Present
  • Co-chair, Service Delivery Committee, National Dental Centre Singapore, 2023 – Present
  • Member, Service Delivery Committee, National Dental Centre Singapore, 2021 –2023
  • Member, International Team for Implantology, 2022 – Present
  • Member, Society of Periodontology Singapore, 2021 – Present


  • Singapore Health Quality Service Awards (Gold) 2024
  • Singapore Health Quality Service Awards (Silver) 2023
  • Service with the Extra Mile Award 2021
  • ORH ACP Young Clinician Publication Award x7 2020-2023
  • NDCS Residency Training Programme Scholarship 2018-2021
  • Ministry of Health Holdings Pte Ltd Relocation Grant 2015

Research Interests

  • Minimally invasive periodontology​
  • Oral microbiome, metagenomic analysis
  • Personalised medicine
  • Implant dentistry
  • Peri-implantitis

Publications and Research Trials

  • Gingival necrosis related to sepsis-induced agranulocytosis due to Pseudomonas aeruginosa bacteraemia: A case report. Tan JY, Teo GN, Ng E, Tay ABG, Tay JRH. J Clin Med. 13(5),1285.
  • A mapping review of the pathogenesis of peri-implantitis: The biofilm-mediated inflammation and bone dysregulation (BIND) hypothesis. Ng E, Tay JRH, Mattheos N, Bostanci N, Belibasakis GN, Seneviratne CJ. Cells. 13(4), 315.
  • The use of artificial intelligence to aid in oral hygiene education: A scoping review. Tay JRH, Ng E, Chow DY, Sim CPC. J Dent. 2023 Aug; 135:104564. ​
  • Antibiotic resistance in the microbiota of periodontitis patients: an update of current findings. Ng E, Tay JRH, Boey SK, Laine ML, Ivanovski S, Seneviratne CJ. Crit Rev Microbiol. 2023 May; 4: 1-12.
  • Comparative efficacy of different flapless ridge preservation techniques: A systematic review and meta-analysis. Ng E, Tay JRH, Lai CWM, Yeo A, Lim LP, Ong MMA. J Oral Implantol. 2023 Apr; 49(2): 206-217.
  • The efficacy of probiotics in the management of intra-oral halitosis: a systematic review. Tay JRH, Ng E, Lai CWM, Lim LP, Ong MMA (2022) Clin Oral Inves. 2022 Jul; 26(7): 4687-4700.
  • Healing complications and their detrimental effects on bone gain in vertical-guided bone regeneration: A systematic review and meta-analysis. Tay JRH, Ng E, Lu JX, Lai CWM. Clin Implant Dent Relat Res. 2022 Feb; 24(1): 43-71.
  • Adjunctive probiotics after periodontal debridement versus placebo: a systematic review and meta-analysis. Ng E, Tay JRH, Saffari SE, Lim LP, Chung KM, Ong MMA. Acta Odontologica Scandinavica. 2022 Mar; 80(2): 81-90
  • Letter to the Editor, “Sources of SARS-CoV-2 and other microorganisms in dental aerosols. Ng E, Tay JRH, Leung NHL, Seneviratne CJ. J Dent Res. 2022 Feb; 101(2): 236.
  • Minimally invasive periodontology: A treatment philosophy and suggested approach. Ng E, Tay JRH, Ong MMA. International Journal of Dentistry. 2021 Jun; 2021: 1-12.
  • Probiotic therapy for periodontal and peri-implant health- silver bullet or sham? Ng E, Tay JRH, Ong MMA, Bostanci N, Belibasakis GN, Seneviratne CJ. Benef Microbes. 2021 Jun; 12(3): 215-230.
  • Economic evaluations in the treatment and evaluation of patients with periodontal disease: A critical review. Tay JRH, Ng E, Nair R, Tan ZA, Tan SHW. J Clin Periodontol. 2021 May; 48(5): 679-694.
  • Metagenomic sequencing provides new insights into the subgingival bacteriome and aetiopathology of periodontitis. Ng E, Tay JRH, Balan P, Ong MMA, Bostanci N, Belibasakis GN, Seneviratne CJ. J Periodontal Res. 2021 Apr; 56(2): 205-218.
  • A risk-based approach to the COVID-19 pandemic: The experience in National Dental Centre Singapore. Tay JRH, Ng E, Ong MMA, Sim C, Tan K, Seneviratne. Front Med (Lausanne). 2020 Nov; 20(7): 562728.
  • An overview of different interdental cleaning aids and their effectiveness. Ng E and Lim LP. Dent J (Basel). 2019 Jun; 7(2): 56.
  • The efficacy of air polishing devices in supportive periodontal therapy: A systematic review and meta-analysis. Ng E, Byun R, Spahr A, Divnic-Resnik T. Quintessence International. 2018 Jun; 49(6), 453-467.
  • Chapter 23: Associations between Genetic Polymorphisms and Heart Rate Variability. Voigt A, Trompf J, Tamayo M, Ng E, Zhou Y, Lu Y, Matthews S, Hambly B, Jelinek H. In Jelinek F, Cornforth D, Khandoker A (Eds), ECG Time Series Variability Analysis: Engineering and Medicine (pp. 453-462). CRC Press, Florida. 2017.
  • Methodological Comparisons of Heart Rate Variability Analysis in Patients with Type 2 Diabetes and Angiotensin Converting Enzyme Polymorphism. Marzbanrad F, Khandoker A, Hambly B, Ng E, Tamayo M, Lu Y, Matthews S, Karmakar C, Palaniswami M, Jelinek H. IEEE Journal of Biomedical and Health Informatics. 2016, Jan; 20(1), 55-63.
  • Relationship Between Heart Rate Variability and Angiotensinogen Gene Polymorphism in Diabetic and control individuals. Marzbanrad F, Hambly B, Ng E, Tamayo M, Matthews S, Karmakar C, Khandoker A, Palaniswami M, Jelinek H. Conference: 36th Annual International IEEE Engineering in Medicine and Biology Society, Piscataway: IEEE. 2014.
  • Angiotensin-converting Enzyme Gene DD Genotype is Associated with Increased Systolic Blood Pressure in an Australian Rural Type 2 Diabetic Cohort. Ng E, Lu Y, Hambly B, Jelinek H, Yu B, Matthews S, McLachlan C. Hypertension Research. 2013, Apr; 36(4), 381-382.
  • Weka machine learning classification in identifying autonomic dysfunction parameters associated with ACE insertion/deletion genotypes. Ng E, Hambly B, Matthews S, McLachlan C, Jelinek H. Conference: 9th IASTED International Conference on Biomedical Engineering, Innsbruck: ACTA Press. 2012.

Research Trials

  • The use of residual pockets as an endpoint on periodontal disease progression in periodontitis patients, 2021 - Present​
  • Understanding the facilitators and barriers for periodontal care utilisation at primary and tertiary dental settings, 2021 - Present
  • Updated on