Würflein Erik, Ollinger Sebastian, Sculean Anton, Vach Kirstin, Landwehr Victoria Constanze, Nelson Katja, Dursun Betül, Nahles Susanne, Iglhaut Pd Gerhard, Fretwurst Tobias
Department of Oral and Maxillofacial Surgery/Translational Implantology, Faculty of Medicine, Medical Centre - University of Freiburg, Freiburg, Germany.
Department of Periodontology, University of Bern, Bern, Switzerland.
Clin Exp Dent Res. 2025 Oct;11(5):e70199. doi: 10.1002/cre2.70199.
To assess the efficacy of the modified coronally advanced tunnel technique (MCAT) with a porcine dermal matrix (PDM) after a 12-month follow-up. There are no other Clinical trials evaluating a PDM over the period of 12 months.
Patients with recession type (RT) 1 and RT 2 gingival recessions were treated with the MCAT and a novel PDM. Plaster casts (preoperative and 12 months postoperative) were scanned using a 3Shape Lab Scanner E3. The resulting STL files were imported and superimposed in the open-source software GOM Inspect for analysis. Measurements included recession depth, mean root and total root coverage (mRC and cRC), mean recession reduction (mRR), and gingival thickness. Statistical analysis was performed using mixed linear models.
A total of 77 teeth (19 patients) were included in the study. Healing was uneventful in all patients. The mean preoperative recession depth was 1.26 mm ± 0.86 mm. mRC was 69.47% ± 61.90%, cRC was 29.79%, mRR was 0.87 ± 0.83 mm, and gingival thickness gain was 0.23 ± 0.24 mm, with comparable results for RT 1 and RT 2. Neither tooth type nor jaw type had any effect on root coverage.
The modified coronally advanced tunnel technique in combination with the analyzed porcine dermal matrix demonstrated stable results for root coverage and gingival thickness after 12 months of follow-up.
Deutsches Register Klinischer Studien/German Clinical Trial Register (DRKS); DRKS00023201.
评估改良冠向推进隧道技术（MCAT）联合猪真皮基质（PDM）在12个月随访后的疗效。目前尚无其他关于猪真皮基质超过12个月的临床试验。
对1型和2型牙龈退缩患者采用MCAT联合新型猪真皮基质进行治疗。使用3Shape Lab Scanner E3扫描术前和术后12个月的石膏模型。将生成的STL文件导入并叠加到开源软件GOM Inspect中进行分析。测量指标包括退缩深度、平均牙根和总牙根覆盖度（mRC和cRC）、平均退缩减少量（mRR）以及牙龈厚度。采用混合线性模型进行统计分析。
本研究共纳入77颗牙齿（19例患者）。所有患者愈合过程均顺利。术前平均退缩深度为1.26 mm±0.86 mm。mRC为69.47%±61.90%，cRC为29.79%，mRR为0.87±0.83 mm，牙龈厚度增加0.23±0.24 mm，1型和2型牙龈退缩的结果具有可比性。牙齿类型和颌骨类型对牙根覆盖均无影响。
改良冠向推进隧道技术联合所分析的猪真皮基质在随访12个月后，牙根覆盖和牙龈厚度方面显示出稳定的结果。
德国临床试验注册中心（DRKS）；DRKS00023201。
