Abstract
Background
Evaluation of clinical long‐term results 20 years after connective tissue grafting (CTG) or guided tissue regeneration (GTR) using bioabsorbable barriers for root coverage therapy.
Methods
Initially, 15 patients with 38 Miller class I and II recession defects underwent CTG or GTR according to random assignment. At baseline, three, 120±12, and 240±12 months after surgery, data on probing depth, clinical attachment level, recession depth and width, amount of keratinized tissue, and bleeding on probing were obtained. Additionally, patients’ smoking habits and participation in supportive periodontal therapy were investigated.
Results
Eight patients contributing 23 recessions were available at the 240±12 months follow‐up. Three and 120±12 months after therapy with CTG, significantly better root coverage was observed compared to baseline (three months: 3.01±1.74mm; P = 0.003; 120±12 months: 2.11±1.86mm; P<0.024). GTR resulted in significantly better root coverage compared to baseline after three months (2.25±1.89mm; P<0.012). Although there were no significant changes in the recession depth between three and 240±12 months in both groups (CTG: P = 0.097; GTR: P = 0.190), 1.57±2.12mm (CTG) and 1.19±2.31mm (GTR) of the achieved coverage after three months were lost. CTG showed significantly better relative root coverage (%) than GTR after three (P = 0.026) and 120 (P = 0.038) months. This study failed to detect a significant difference in the stability of root coverage after 240±12 months between CTG and GTR (P = 0.448) and patients’ assessments of their treatment outcomes (P = 0.503).
Conclusions
Long‐term stability of root coverage and patient‐perceived aesthetic outcomes failed to show significant differences between CTG and GTR at 20 years after surgery.
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from
https://aap.onlinelibrary.wiley.com/doi/abs/10.1002/JPER.19-0203?af=R
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