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International Poster Journal of Dentistry and Oral Medicine
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Int Poster J Dent Oral Med 9 (2007), No. 3     15. Sep. 2007

Int Poster J Dent Oral Med 2007, Vol 9 No 03, Poster 376

Factors predicting tooth loss in periodontally treated patients

Language: English

Authors:
Dr. med.dent. Bernadette Pretzl, Sektion Parodontologie der Poliklinik für Zahnerhaltungskunde, Universitätsklinikum Heidelberg
Professor Dr. med.dent. Peter Eickholz, Abteilung für Parodontologie, Zentrum für Zahn-, Mund-Kiefer-Heilkunde (Carolinum) der Johann Wolfgang Goethe-Universität Frankfurt

Date/Event/Venue:
29. Juni bis 01. Juli 2006
Europerio 05
Madrid

Objectives

The aim of this study was to assess factors contributing to tooth loss 10 years after initiation of periodontal treatment.

Fig. 1: Tooth loss per patient

Material and Methods

Patients

  • 93 adult patients
  • written informed consent
  • periodontal treatment initiated 10 years ago
  • completion of antiinfectious therapy
  • full-mouth radiographs from beginning of therapy

Documentation

  • medical files searched for initial diagnosis
  • documentation of tooth loss
  • Frequency of supportive periodontal therapy
  • prognosis index (Checchi et al. 2002)

Examination

  • clinical examination including periodontal findings by the same examiner
  • GBI (Ainamo & Bay 1975)
  • PCR (O'Leary 1972)
  • Periodontal status (SSO criteria 2000)
  • samples for Interleukin-1-testing (IAI, Zuchwil/CH; Hain Lifescience, Nehren/Germany)
  • detailed questionnaire on smoking, dental care, social status, and nutrition

Statistical Analysis

  • statistical unit: single patient
  • primary outcome variable: tooth loss
  • secondary outcome variable: periodontal status (SSO 2000)
  • Statistical Software Package SPSS 14.0
  • Linear stepwise regression

Results

The periodontal situation (GBI, PCR, pocket depths, BOP, SUP, esthetics, pain) was more favorable in patients with at least one SPT per year. The difference between regular and irregular maintenance patients could be proven to be statistically significant (p=0.024).

Results II Tooth Loss p
Gender male 1.5 ± 3.5 0.979
female 1.7 ± 3.9
Smoking Status non-smoking 1.1 ± 1.8 0.974
smoking 3.1 ± 6.5
Initial Diagnosis moderate chronic 0.6 ± 1.4 0.981
aggressive/sev. chron. 2.0± 4.2
Prognosis A or B 1.4 ± 2.4 0.962
(Checchi et al. 2002) C 2.7 ± 4.9
IL-1 Haplotype negative 0.9 ± 4.7 0.049
positive 2.1 ± 1.3
Maintenance regular 0.4 ± 0.8 0.001
irregular 3.1 ± 5.1

  Non-standardised
coefficients
Standardised
coefficients
 
Model B Standard
Deviation
Beta T Significance
1 (Constant) 0.440 0.421 1.044 0.299
SPT for SPSS 2.165 0.641 0.342 3.377 0.001
 
2 (Constant) -0.730 0.487 -0.150 0.881
SPT for SPSS 2.206 0.631 0.349 3.498 0.001
IL-1 for SPSS 1.282 0.642 0.199 1.999 0.049
Results III: Coefficients, dependent variable: lost teeth

Conclusions

Some criteria seem to interact with tooth loss whereas only regular SPT and absence of IL-1 haplotype could be proven to be statistically significant in prevention of tooth loss.



This Poster was submitted by Dr. med.dent. Bernadette Pretzl.

Correspondence address:
Dr. med.dent. Bernadette Pretzl
Sektion Parodontologie der Poliklinik für Zahnerhaltungskunde
Universitätsklinikum Heidelberg
Im Neuenheimer Feld 400
69120 Heidelberg