Related Experiment Videos
Dynamics of mucosal dimensions after root coverage with a bioresorbable membrane
1Department of Operative Dentistry and Periodontology, University of Heidelberg, Germany.
Journal of Clinical Periodontology
|February 16, 2000
Summary
Guided tissue regeneration using a bioresorbable membrane significantly increased mucosal thickness for root coverage. This space-making capacity supports tissue ingrowth, with thickness gradually decreasing as the membrane resorbs.
Area of Science:
- Periodontology
- Regenerative Medicine
- Biomaterials Science
Background:
- Clinical effects of resorbable membranes for guided tissue regeneration (GTR) in humans require further detailed study.
- Resorptive dynamics of GTR membranes are not well understood.
- This study investigates mucosal dimension changes after root coverage using a bioresorbable membrane and coronally-repositioned flap.
Purpose of the Study:
- To evaluate the clinical effects of a bioresorbable membrane in guided tissue regeneration for root coverage.
- To assess alterations in dentogingival mucosal dimensions following surgical root coverage.
- To explore the space-making capacity and tissue integration of bioresorbable membranes.
Main Methods:
- A longitudinal study involving 14 patients with 31 shallow to moderate gingival recessions (Miller class I-III).
- Surgical root coverage was performed using a bioresorbable membrane and a coronally-repositioned flap.
- Ultrasonic device used to measure masticatory and lining mucosa thickness pre- and post-surgery at various time points up to 12 months.
Main Results:
- Mean recession depth and width were 2.85 mm and 4.46 mm, respectively.
- After 12 months, 51% of recession depth and 13% of width were covered, with better outcomes for shallower defects and canines.
- Significant increase in mucosal thickness observed: marginal tissue increased from 0.82 mm to 1.49 mm at 3 months (p<0.001) and 1.03 mm at 12 months (p<0.001).
- Alveolar lining mucosa showed a threefold increase in thickness at 3 months, gradually decreasing to ~1 mm at 12 months.
Conclusions:
- Bioresorbable membranes demonstrate significant space-making capacity, facilitating granulation tissue ingrowth.
- The observed increase in mucosal thickness suggests successful tissue regeneration and flap stabilization.
- Gradual decrease in mucosal thickness correlates with membrane maturation and resorption, indicating effective GTR outcomes.