Department of Oral Medicine and Periodontology

Faculty of Dental Sciences

Faculty of Dental Sciences

University of Peradeniya

Prof. P.S. Rajapaksha

Senior Professor in Periodontology

Official Address :

Department of Oral Medicine & Periodontology
Faculty of Dental Sciences,
University of Peradeniya,
Sri Lanka

Email :

Telephone :


Personal Website :

Senior Professor in Periodontology

    PhD (University of Melbourne)
    BDS (Sri Lanka)
    Senior Lecturer 1994-2006
    Professor in Periodontology 2006 -2014
    Senior Professor in Periodontology 2014–todate
  • WHO Fellowship to study advanced treatment techniques in Mahidol University, National University Singapore, and University of Malaya Jan 1989-March 1989
  • Commonwealth Medical Fellowship – training on immunological techniques in periodontal research and identification of Oral Bacteria – University of Wales College of Medicine, Dental School Heath Park, Cardiff, Wales UK July 1991-July 1992
  • Special Postgraduate Studentship – The University Of Melbourne 1997-1999
  • Melbourne International Research Scholarship – The University of Melbourne -1998-1999
  • Head division of Periodontology - 1986-1996 (except 1991-1992)
  • Head Department of Oral Medicine and Periodontology 2001-2003 Concurrently Head division of Periodontology
  • Head Division of Microbiology 2003-2005 – Established an Industry –Oral Microbiology collaborative Research Unit in the Division of Microbiology
  • Role of P. gingivalis in periodontal diseases pathogenesis
  • Implications of periodontal diseases on systemic health
  • Development of novel therapeutics from herbal ingredients to control caries and periodontal disease
  • Antibiofilm, anti inflammatory and other health benefits of medicinal herbs
  • Howshigan J, Perera K, Samita S, Rajapakse PS. The effects of an Ayurvedic medicinal toothpaste on clinical, microbiological and oral hygiene parameters in patients with chronic gingivitis: a double-blind, randomised, placebo-controlled, parallel allocation clinical trial Ceylon Med J. 2015 Dec;60(4):126-32. doi: 10.4038/cmj.v60i4.8219.
  • Lee CH, Ko AM, Warnakulasuriya S, Ling TY, Sunarjo, Rajapakse PS, Zain RB, Ibrahim SO, Zhang SS, Wu HJ, Liu L, Kuntoro, Utomo B, Warusavithana SA, Razak IA, Abdullah N, Shrestha P, Shieh TY, Yen CF, Ko YC.Population burden of betel quid abuse and its relation to oral premalignant disorders in South, Southeast, and East Asia: an Asian Betel-quid Consortium Study. Am J Public Health. 2012 Mar;102(3):e17-24. doi: 10.2105/AJPH.2011.300521. Epub 2012 Jan 19.
  • Jayashankar S, Panagoda GJ, Amaratunga EA, Perera K, Rajapakse PS.A randomised double-blind placebo-controlled study on the effects of a herbal toothpaste on gingival bleeding, oral hygiene and microbial variables. Ceylon Med J. 2011 Mar;56(1):5-9.
  • Lee CH, Ko AM, Warnakulasuriya S, Yin BL, Sunarjo, Zain RB, Ibrahim SO, Liu ZW, Li WH, Zhang SS, Kuntoro, Utomo B, Rajapakse PS, Warusavithana SA, Razak IA, Abdullah N, Shrestha P, Kwan AL, Shieh TY, Chen MK, Ko YC. Intercountry prevalences and practices of betel-quid use in south, southeast and eastern Asia regions and associated oral preneoplastic disorders: an international collaborative study by Asian betel-quid consortium of south and east Asia .Int J Cancer. 2011 Oct 1;129(7):1741-51. doi: 10.1002/ijc.25809. Epub 2011 Mar 8.
  • Rajapakse PS, McCracken GI, Gwynnett E, Steen ND, Guentsch A, Heasman PA Does tooth brushing influence the development and progression of non-inflammatory gingival recession? A systematic review. J Clin Periodontol. 2007 Dec;34(12):1046-61.
  • Rajapakse PS, Nagarathne M, Chandrasekra KB, Dasanayake P .Periodontal disease and prematurity among non-smoking Sri Lankan women. J Dent Res. 2005 Mar;84(3):274-7.
  • Rajapakse PS, Dolby AE.Evidence for local production of antibodies to auto and non-self antigens in periodontal disease. Oral Dis. 2004 Mar;10(2):99-105
  • Rajapakse PS, O'Brien-Simpson NM, Slakeski N, Hoffmann B, Reynolds EC Immunization with the RgpA-Kgp proteinase-adhesin complexes of Porphyromonas gingivalis protects against periodontal bone loss in the rat periodontitis model. Infect Immun. 2002 May;70(5):2480-6
  • Pennington M, Heasman P, Gaunt F, Güntsch A, Ivanovski S, Imazato S, Rajapakse S, Allen E, Flemmig T, Sanz M, Vernazza CThe cost-effectiveness of supportive periodontal care: a global perspective. J Clin Periodontol. 2011 Jun;38(6):553-61. doi: 10.1111/j.1600-051X.2011.01722.x.
  • Verma RK, Rajapakse S, Meka A, Hamrick C, Pola S, Bhattacharyya I, Nair M, Wallet SM, Aukhil I, Kesavalu L Porphyromonas gingivalis and Treponema denticola Mixed Microbial Infection in a Rat Model of Periodontal Disease. Interdiscip Perspect Infect Dis. 2010;2010:605125. doi: 10.1155/2010/605125. Epub 2010 May 31