Tunnel technique with connective tissue graft versus coronally advanced flap with enamel matrix derivate for root coverage: 2-year results of an RCT using 3D digital measuring for volumetric comparison of gingival dimensions.

Journal of Clinical Periodontology
Otto ZuhrResearch Group for Oral Soft Tissue Biology & Wound Healing

Abstract

The aim of this randomized clinical trial was to compare clinical and volumetric outcomes of tunnel technique (TUN) with subepithelial connective tissue graft (CTG) versus coronally advanced flap (CAF) with enamel matrix derivate (EMD) 2 years after gingival recession (GR) treatment. Twenty-three patients contributed 45 Miller class I or II GR. At baseline and follow-up examinations, study models were collected. Their three-dimensional scans allowed precise computer-assisted measurement of recession depth (REC), complete root coverage (CRC), percentage of root coverage (RC), pointwise (pTHK) and mean areal (aTHK) marginal soft tissue thickness. Clinical examination delivered probing depths (PPD) and height of keratinized tissue. 24 months after surgery, digitally evaluated CRC was present in 60.0% of the TUN + CTG and 0.0% of the CAF + EMD-treated sites (p < .0001), meaning a certain relapse of the gingival margin ragarding both approaches. RC amounted to 94.0% (TUN + CTG) and 57.3% (CAF + EMD), respectively (p < .0001). REC reduction (RECred) was significantly higher for TUN + CTG (1.81 ± 0.56 mm) than for CAF + EMD (0.90 ± 0.45 mm) (p < .0001). pTHK and aTHK values were significantly greater in the TUN + CTG group (1.41 ± 0.3...Continue Reading

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Citations

Jan 19, 2021·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Edward P Allen
Dec 9, 2021·Journal of Clinical Periodontology·Marko Kuralt, Aleš Fidler

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