Effect of 24% EDTA root conditioning on the outcome of modified coronally advanced tunnel technique with subepithelial connective tissue graft for the treatment of multiple gingival recessions: a randomized clinical trial

Bartłomiej Górski, Marcin Szerszeń, Tomasz Kaczyński, Bartłomiej Górski, Marcin Szerszeń, Tomasz Kaczyński

Abstract

Objectives: To investigate effects of root conditioning with 24% ethylenediaminetetraacetic acid (EDTA) on the 12-month outcomes after treatment of multiple gingival recessions (GR) with modified coronally advanced tunnel (MCAT) and subepithelial connective tissue graft (SCTG).

Materials and methods: Twenty patients with 142 GR were treated (72 test sites: SCTG + EDTA and 70 control sites: SCTG). Average and complete root coverage (ARC, CRC), gain in keratinized tissue width (KTW), gain in gingival thickness (GT), root esthetic coverage score (RES), and patient-reported outcome measures (PROMs) were evaluated at 12 months post-operatively.

Results: Differences between pre- and post-operative values were statistically significant only within but not between treatment modalities. At 12 months, ARC was 86.0% for SCTG + EDTA-treated and 84.6 for SCTG-treated defects (p = 0.6636). CRC was observed in 90.2% (tests) and 91.4% (controls) of all cases (p = 0.9903). Professional assessment of esthetic outcomes using RES showed highly positive results reaching the value of 8.9 in case of test sites and 8.7 for control sites (p = 0.3358). Severity of pain and swelling did not differ between sites, regardless of whether EDTA was used.

Conclusions: Test and control sites presented similarly positive outcomes related to root coverage, periodontal and esthetic parameters, and patient satisfaction and self-reported morbidity with no statistical differences between them 12 months after surgery. No significant differences in evaluated variables were observed between sites treated with and without 24% EDTA. Clinical relevance Considering the limitations of the present study, the use of 24% EDTA for root conditioning did not improve 12-month outcomes after treatment of multiple RT1 and RT2 gingival recessions with MCAT and SCTG. Trial registration ClinicalTrials.gov identifier: NCT03354104.

Keywords: Esthetics; Ethylenediaminetetraacetic acid (EDTA); Modified coronally advanced tunnel technique; Multiple gingival recessions; Subepithelial connective tissue graft.

© 2021. The Author(s).

Figures

Fig. 1
Fig. 1
Consort diagram showing the study design
Fig. 2
Fig. 2
a Pre-operative view of gingival recessions on test side. b Immediate post-operative view. c 12-month post-operative view
Fig. 3
Fig. 3
a Pre-operative view of gingival recessions on control side. b Immediate post-operative view. c 12-month post-operative view

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