Related Experiment Videos
Root coverage employing an envelope technique or guided tissue regeneration with a bioabsorbable membrane
1Department of Operative Dentistry and Periodontology, University of Heidelberg, Germany.
Journal of Periodontology
|August 10, 1999
Summary
The modified envelope technique using connective tissue grafts offers more predictable root coverage for shallow gingival recession compared to coronally repositioned flaps with bioabsorbable membranes. This surgical approach achieved significantly better results in root surface coverage and recession width reduction.
Area of Science:
- Periodontology
- Dental Surgery
Background:
- Gingival recession is a common dental condition requiring various surgical treatments.
- Shallow recessions (Class I or II) present specific challenges for root coverage procedures.
Purpose of the Study:
- To compare the postsurgical outcomes of two distinct surgical techniques for root coverage.
- To evaluate the efficacy of a modified envelope technique with free connective tissue grafts versus a coronally repositioned flap with a bioabsorbable membrane for treating shallow gingival recessions.
Main Methods:
- A comparative study involving 27 patients with 28 buccal recession sites.
- Fourteen sites received free connective tissue grafts (modified envelope technique); 14 sites were treated with a coronally repositioned flap and bioabsorbable membrane.
- Measurements of gingival dimensions, recession width, thickness, root coverage, and attachment gain were taken pre- and post-surgically (6 months).
Main Results:
- The modified envelope technique achieved 80% root surface coverage, significantly higher than the 45% achieved with the coronally repositioned flap and membrane.
- Recession width reduction was markedly greater with the modified envelope technique (77%) compared to the other method (18%).
- Both techniques resulted in a similar increase in gingival thickness (0.6-0.7 mm).
Conclusions:
- The modified envelope technique with free connective tissue grafts is a more predictable surgical option for covering small to moderate gingival recessions.
- This technique demonstrates superior outcomes in terms of root coverage and reduction of recession width compared to the alternative method studied.