https://pubmed.ncbi.nlm.nih.gov/32901241/

Cosgarea R, Miron R, Bora R, Rosu A, Buduru S, Sculean A. Quintessence Int. 2020. doi: 10.3290/j.qi.a45171.

Objective:
Evaluation of the long-term clinical results after treatment of multiple adjacent recession type (RT) I and II (Miller class I and III) treated with the modified coronally advanced tunnel (MCAT) in conjunction with a porcine acellular dermal matrix (PADM= mucoderm®).
Materials/ Methods:
Nine periodontally healthy nonsmoking patients with a total of 41 adjacent gingival recessions (RT I n = 23 and RT II n = 18) with a minimum depth of 2 mm were treated by means of MCAT+ mucoderm®. Recession depth and width, width of attached and keratinized tissue, probing depths, and clinical attachment level were measured at baseline and at 1, and 4 years post-surgically. The primary outcome variable was complete root coverage (ie. 100% root coverage), while secondary outcomes were mean root coverage and increase in keratinized tissue and attached gingiva widths.
Results:
At 1 and 4 years, statistically highly significant root coverage was obtained in all nine patients compared to baseline. At 4 years, mean root coverage decreased in these nine patients from 72.05 ± 30.18% at 1 year to 56.79 ± 27.53%. Complete root coverage was obtained in 18 gingival recessions at 1 year and seven gingival recessions at 4 years. Most root coverage occurred in the first year post-surgically, showing a statistically significant decrease between the first and fourth year. Mean width of attached gingiva increased statistically significantly from 2.85 ± 1.08 mm to 3.14 ± 1.08 mm at 1 year with a statistically significant decrease at 4 years. At 1 year, 78.05% of gingival recessions showed a root coverage > 50%, and 68.29% still exhibited a root coverage > 50% at 4 years.
Conclusion:
The use of MCAT+ mucoderm® represents a valuable treatment option for multiple adjacent maxillary and mandibular RT I and II gingival recessions (Miller class I and III) on a long-term basis.

Raluca Cosgarea