Partial-thickness/Non-advanced vs. Full-thickness/MCAT Tunnelling for the Treatment of Multiple Gingival Recessions

Any patient having a minimum of two adjacent teeth with RT1 and/or RT2 gingival recessions (at least one with a depth >2 mm) with indication for root coverage treatment, being atleast 18 years old and able and agreeing to sign a written informed consent form will bepotentially eligible for this trial. RT2 gingival recessions will be considered noteligible when associated with interproximal exposure of the CEJ (interdental gingivalrecession). In case of multiple RT1/RT2 recessions involving 2 or 3 teeth, at least 2 or 1 morenon-included adjacent teeth should respectively be present in order to guarantee a minimumof 4 adjacent teeth (including the included ones) in the region of interest (ROI) fordigital scanning. Patients fitting to all the inclusion criteria as above will be not included in the studyif they appear to be unable to attend to the study-related procedures (including thefollow-up visits) or if one or more of the following systemic or local exclusion criteriaare found in the enrollment phase.

Systemic primary exclusion criteria:

• Compromised general health which contraindicates the study procedures (ASA IV-VIpatients);
• Systemic diseases/medications which could influence the outcome of the therapy (e.g.,uncontrolled diabetes mellitus);
• Current smokers (self-reported, any type of smoking), users of chewing tobacco, anddrug/alcohol abusers;
• Pregnant or nursing women; Local primary exclusion criteria:
• History of previous periodontal surgery (mucogingival or other) on the teeth to beincluded;
• Patients having had surgical soft tissue augmentation procedures in the ROI within theprevious 12 months;
• Furcation involvement in the teeth to be included;
• Presence of severe tooth malposition, rotation or clinically significantsuper-eruption in the teeth to be treated;
• Presence of fixed or removable prosthesis in the area to be treated;
• Presence of RT3 gingival recessions in the same surgical area of the treatment. Secondary exclusion criteria (after initial therapy is provided):
• Not able to achieve good oral hygiene and control gingivitis in the whole of thedentition (FMPS < 20% and FMBS < 20%);
• Persistence of uncorrected gingival trauma from toothbrushing.