Effect of Restoration Margin Level in the Treatment of Gingival Recession Associated With Non-carious Cervical Lesion

The aim of this randomized, parallel-group clinical trial was to compare the 1-year periodontal, root coverage, esthetic, and patient-centered outcomes of the partial restoration placement with different apical margin levels combined with coronally advanced flap (CAF) plus connective tissue graft (CTG) in the treatment of isolated gingival recessions associated with non-carious cervical lesions (NCCL). Forty patients with single gingival recessions (RT1 gingival recessions and class B+ NCCL) were randomly allocated to either placement of restoration apical margin at the level of estimated cementoenamel junction (CEJ) or within 1 mm apical to the CEJ. Two weeks after the restorative treatment, all recession defects were treated with CAF combined with CTG. Periodontal measurements were taken at baseline, and 3, 6, and 12 months postoperatively. Patient-centered outcomes were evaluated at baseline, and 7, and 15 days, 6, and 12 months postoperative follow-ups. Modified root closure aesthetic score (mRES) was used to assess aesthetics at 6 and 12 months follow-ups.

Inclusion Criteria:Gingival recession of at least 1 mm depth.There is no loss of interdental support (RT-1)Cervical step greater than 0.5 mmInability to detect CEJ (Class B+)Maximum root closure level at the NCCL's deepest point (Type 3)Individuals who do not have any systemic disease that would preclude surgeryWho are not pregnantWho are not smokers or who smoke less than 5 cigarettes per dayWho have a whole mouth plaque and bleeding score of 10%Patients who do not require endodontic treatment in the surgical area and do not have tooth mobility;Patients who do not require orthodontic treatment;Patients who do not have periodontal disease; andPatients who do not have restoration and/or filling in the recession area.Exclusion Criteria:SmokersPregnantHaving a systemic disease that may deteriorate wound healingPoor oral hygienePatients with active periodontal diseaseTooth devitalization