Impact of partial restoration margin level in combination with connective tissue graft on the treatment of single RT1 gingival recessions associated with non-carious cervical lesions: a 1-year randomized parallel-group trial


Baburcan C. T., KEÇELİ H. G., Ozbay Cetiner D., Çörekci A. U., AKGÜL S., İŞLER S. Ç.

Clinical Oral Investigations, cilt.30, sa.1, 2026 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 1
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1007/s00784-025-06699-2
  • Dergi Adı: Clinical Oral Investigations
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, MEDLINE
  • Anahtar Kelimeler: Connective tissue, Gingival recession, Non-carious cervical lesion, Partial restoration, Plastic surgery
  • Gazi Üniversitesi Adresli: Evet

Özet

Objectives: To assess whether the apical margin position of partial restorations (PRs) influences outcomes of coronally advanced flap (CAF) plus connective tissue graft (CTG) in single RT1 gingival recessions with Class B+ non-carious cervical lesions (NCCLs). Materials and methods: Forty patients were randomized to receive PRs completed at the estimated cementoenamel junction (CEJ-0) or 1 mm apical to it (CEJ-1), placed two weeks before CAF + CTG. Clinical parameters—including recession depth (RD), mean root coverage (mRC%), keratinized tissue height, and gingival thickness—and patient-reported outcomes (pain, discomfort, sensitivity, esthetics) were evaluated up to 12 months. Results: Thirty-five patients completed follow-up. RD reduction and mRC% were similar (CEJ-0: 1.91 ± 0.91 mm, 83.3%; CEJ-1: 1.93 ± 0.78 mm, 81.6%). Esthetic scores assessed using the Modified Root Coverage Esthetic Score (MRCES) were comparable (8.63 vs. 8.38). Both groups showed increased gingival thickness, while CEJ-1 yielded lower early postoperative sensitivity and discomfort. Baseline RD predicted RD reduction (β = 0.568; p = 0.02). Conclusions: PR margins at or 1 mm apical to the CEJ provided similar clinical and esthetic outcomes when combined with CAF + CTG. The CEJ-1 approach improved early patient comfort without compromising root coverage. Clinical relevance: Positioning the restoration margin 1 mm apical to the CEJ may enhance early postoperative comfort while maintaining comparable clinical and esthetic outcomes.