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Related Experiment Videos

Guided tissue regeneration using a polylactic acid barrier.

B Ehmke1, S G Rüdiger, A Hommens

  • 1Clinic of Periodontology and Institute of Infection Control, University of Münster, Waldeyerstrasse 30, 48149 Münster, Germany.

Journal of Clinical Periodontology
|April 16, 2003
PubMed
Summary

Active smoking and P. gingivalis infection negatively impact guided tissue regeneration (GTR) outcomes in periodontal defects. Deeper initial defects positively influence bone gain, aiding prognosis assessment.

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Area of Science:

  • Periodontology
  • Regenerative Dentistry
  • Oral Health

Background:

  • Guided tissue regeneration (GTR) is a key treatment for intraosseous periodontal defects.
  • Predicting treatment outcomes in GTR remains crucial for patient prognosis.
  • Variability in GTR success necessitates identifying key influencing factors.

Purpose of the Study:

  • To determine the relative impact of various predictors on treatment outcomes after GTR.
  • To identify factors influencing alveolar bone level changes in intraosseous periodontal defects.
  • To assess the prognostic value of clinical and microbiological variables in GTR.

Main Methods:

  • 30 patients with chronic periodontitis and intraosseous defects underwent GTR with polylactic acid membranes.

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  • Predictor variables included periodontal pathogens (P. gingivalis), defect morphology, membrane exposure, and smoking.
  • Alveolar bone level change was measured over 12 months using multiple regression analysis.

    • Main Results:

    • A mean bone gain of 1.6 mm was observed after 12 months.
    • Active smoking was strongly associated with poor outcomes (beta = -0.49, P=0.003).
    • Deeper initial defects correlated with favorable outcomes (beta = 0.32, P=0.045), while P. gingivalis infection showed a negative trend (beta = -0.25, P=0.11). Membrane exposure had no significant impact.

    Conclusions:

    • Active smoking is the most significant negative predictor for GTR success in periodontal defects.
    • Deeper intraosseous defects positively influence bone gain, improving prognosis.
    • Persistent P. gingivalis infection negatively affects GTR outcomes, highlighting the importance of microbiological control.