title: Methodological issues in epidemiological studies of periodontitis--how can it be improved?
abstract: BACKGROUND
  This position paper was commissioned by the European Association of Dental Public Health, which has established six working groups to investigate the current status of six topics related to oral public health. One of these areas is epidemiology of periodontal diseases.
  
  
  METHODS
  Two theses "A systematic review of definitions of periodontitis and the methods that have been used to identify periodontitis" 1 and "Factors affecting community oral health care needs and provision" 2 formed the starting point for this position paper. Additional relevant and more recent publications were retrieved through a MEDLINE search.
  
  
  RESULTS
  The literature reveals a distinct lack of consensus and uniformity in the definition of periodontitis within epidemiological studies. There are also numerous differences in the methods used. The consequence is that data from studies using differing case definitions and differing survey methods are not easily interpretable or comparable. The limitations of the widely used Community Periodontal Index of Treatment Need (CPITN) and its more recent derivatives are widely recognized. Against this background, this position paper reviews the current evidence base, outlines existing problems and suggests how epidemiology of periodontal diseases may be improved.
  
  
  CONCLUSIONS
  The remit of this working group was to review and discuss the existing evidence base of epidemiology of periodontal diseases and to identify future areas of work to further enhance it.
authors.affiliation: Catholic University Leuven, Leuven, Belgium. roos.leroy@med.kuleuven.be
authors.forename: Roos
authors.initials: R
authors.lastname: Leroy
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Eaton
authors.forename: Amir
authors.initials: A
authors.lastname: Savage
mesh_terms: D018865:Dental Research / Q000379:methods*; D004812:Epidemiologic Methods; D006801:Humans; D017622:Periodontal Attachment Loss / Q000175:diagnosis; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000175:diagnosis; D010518:Periodontitis / Q000453:epidemiology*; D012107:Research Design / Q000592:standards*; D009626:Terminology as Topic
references.citation: J Clin Periodontol. 1994 Jan;21(1):1-6
references.pmid: 8126237
references.citation: J Periodontol. 1990 Aug;61(8):497-503
references.pmid: 2391627
references.citation: J Periodontol. 1992 Dec;63(12 Suppl):1072-7
references.pmid: 1479528
references.citation: J Calif Dent Assoc. 1994 Feb;22(2):43-6
references.pmid: 7523617
references.citation: Periodontol 2000. 2002;29:11-30
references.pmid: 12102701
references.citation: J Dent. 2008 Aug;36(8):651-7
references.pmid: 18534736
references.citation: J Periodontol. 1999 Jan;70(1):13-29
references.pmid: 10052767
references.citation: Zhonghua Ya Yi Xue Hui Za Zhi. 1990 Jun;9(2):67-74
references.pmid: 2104287
references.citation: J Clin Periodontol. 1986 May;13(5):500-5
references.pmid: 3459740
references.citation: J Clin Periodontol. 1989 Nov;16(10):671-8
references.pmid: 2613936
references.citation: J Clin Periodontol. 2000 May;27(5):308-12
references.pmid: 10847533
references.citation: Int Dent J. 1987 Sep;37(3):173-8
references.pmid: 3479394
references.citation: J Periodontol. 2001 Feb;72(2):140-5
references.pmid: 11288785
references.citation: J Clin Periodontol. 1989 Sep;16(8):529-33
references.pmid: 2778087
references.citation: J Int Acad Periodontol. 2000 Oct;2(4):120-8
references.pmid: 12666970
references.citation: Int Dent J. 1994 Oct;44(5 Suppl 1):571-6
references.pmid: 7836012
references.citation: J Clin Periodontol. 1992 May;19(5):295-300
references.pmid: 1517472
references.citation: J Periodontol. 2007 Jul;78(7 Suppl):1387-99
references.pmid: 17608611
references.citation: Community Dent Oral Epidemiol. 1990 Dec;18(6):322-3
references.pmid: 2090387
references.citation: Community Dent Oral Epidemiol. 1989 Aug;17(4):190-5
references.pmid: 2667876
references.citation: J Clin Periodontol. 1996 Aug;23(8):758-63
references.pmid: 8877662
references.citation: J Clin Periodontol. 1992 May;19(5):301-4
references.pmid: 1517473
references.citation: J Clin Periodontol. 2005 Feb;32(2):123-9
references.pmid: 15691340
references.citation: J Clin Periodontol. 2009 Jun;36(6):458-67
references.pmid: 19508246
references.citation: J Dent Res. 1999 Mar;78(3):730-4
references.pmid: 10096447
references.citation: J Periodontol. 1989 Apr;60(4):167-71
references.pmid: 2724029
references.citation: J Clin Periodontol. 1988 Mar;15(3):180-4
references.pmid: 3162464
references.citation: Int Dent J. 1994 Oct;44(5 Suppl 1):523-5
references.pmid: 7836006
references.citation: J Clin Periodontol. 1988 Aug;15(7):445-52
references.pmid: 3263399
references.citation: J Clin Periodontol. 2005;32 Suppl 6:210-3
references.pmid: 16128839
references.citation: J Clin Periodontol. 1991 Aug;18(7):516-20
references.pmid: 1894745
references.citation: Community Dent Oral Epidemiol. 1996 Feb;24(1):56-61
references.pmid: 8833516
references.citation: Ann Periodontol. 1996 Nov;1(1):1-36
references.pmid: 9118256
references.citation: J Clin Periodontol. 2001 Apr;28(4):331-9
references.pmid: 11314889
references.citation: J Dent Res. 2004 Dec;83(12):951-5
references.pmid: 15557404
references.citation: J Periodontol. 1992 Mar;63(3):206-14
references.pmid: 1593413
references.citation: J Clin Periodontol. 1995 Feb;22(2):146-52
references.pmid: 7775671
references.citation: J Clin Periodontol. 2003 Apr;30(4):346-52
references.pmid: 12694434
references.citation: J Dent Res. 2002 Dec;81(12):851-5
references.pmid: 12454101
references.citation: Int Dent J. 1987 Dec;37(4):222-33
references.pmid: 3481626
references.citation: Can J Public Health. 1993 Mar-Apr;84(2):139-40
references.pmid: 8334609
references.citation: Periodontol 2000. 1993 Jun;2:34-45
references.pmid: 9673179
references.citation: J Periodontol. 1994 Jun;65(6):616-22
references.pmid: 8083795
references.citation: J Periodontol. 1994 Oct;65(10):908-13
references.pmid: 7823271
references.citation: Community Dent Health. 1988 Jun;5(2):113-9
references.pmid: 3165038
references.citation: J Periodontol. 2005 Aug;76(8):1406-19
references.pmid: 16101377
references.citation: Community Dent Oral Epidemiol. 1988 Apr;16(2):109-11
references.pmid: 3258801
references.citation: J Am Dent Assoc. 1993 Jul;124(7):230-1
references.pmid: 8335793
references.citation: J Periodontol. 1997 Apr;68(4):335-45
references.pmid: 9150038
references.citation: Community Dent Oral Epidemiol. 1989 Dec;17(6):300-3
references.pmid: 2591181
references.citation: J Clin Periodontol. 2009 Apr;36(4):315-22
references.pmid: 19426178
references.citation: J Clin Periodontol. 2005;32 Suppl 6:132-58
references.pmid: 16128835
references.citation: Int Dent J. 1984 Mar;34(1):28-34
references.pmid: 6584398
references.citation: Schweiz Monatsschr Zahnmed. 1990;100(4):408-11
references.pmid: 2343283
references.citation: J Dent Res. 1990 Feb;69(2):430-5
references.pmid: 2407756
references.citation: J Clin Periodontol. 2009 Jan;36(1):1-2
references.pmid: 19017037