Impact of Root Surface Conditioning With Erythritol Air Polishing and Hand Instrumentation on Recession Coverage Using the Modified Tunnel Technique and Subepithelial Connective Tissue Graft.

NCT07403006 | Recruiting DMC

• 1 other identifier: WUM.Perio.06
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to evaluate whether the method of root surface preparation influences surgical outcomes. It will assess whether manual root instrumentation can be replaced by a less invasive erythritol air-polishing technique.

Conditions

Gingival Recession

Outcome Measures

Primary Outcomes (1)

• Mean Root Coverage (MRC, %)

  Mean root coverage (MRC), expressed as a percentage (%), assessed at 6 and 12 months post-surgery. MRC is calculated as (GR₀ - GR₆) / GR₀ × 100% and (GR₀ - GR₁₂) / GR₀ × 100%, respectively. Gingival recession (GR), measured in millimeters (mm) as the distance from the cemento-enamel junction (CEJ) to the gingival margin at the mid-buccal aspect of the tooth, is used solely as an input parameter for the calculation of MRC.

  6 months and 12 months post-surgery

Secondary Outcomes (19)

• Gingival recession height (GRH, mm)

  baseline, 6 months, and 12 months post-surgery

• Gingival recession width (RW, mm)

  baseline, 6 months, and 12 months post-surgery

• Clinical Attachment Level (CAL, mm)

  Baseline; 6 and 12 months post-surgery

• Probing Pocket Depth (PPD, mm)

  baseline, 6 months, and 12 months post-surgery

• Gingival Thickness (GT, mm)

  baseline, 6 months, and 12 months post-surgery

Other Outcomes (4)

• Procedure-related stress (VAS, 0-10)

  Baseline (day of surgery, pre-anesthesia)

• Treatment satisfaction (VAS, 0-10)

  12 months after surgery

• Willingness to choose the treatment again (yes/no)

  12 months after surgery

Study Arms (2)

Erythritol Air-Polishing

EXPERIMENTAL

Sites with gingival recessions treated with root surface preparation using erythritol air-polishing prior to modified tunnel technique with subepithelial connective tissue graft.

Procedure: Erythritol Air-Polishing

Manual Root Instrumentation

ACTIVE COMPARATOR

Sites with gingival recessions treated with root surface preparation using manual Gracey curettes prior to modified tunnel technique with subepithelial connective tissue graft.

Procedure: Manual Root Instrumentation

Interventions

Erythritol Air-Polishing PROCEDURE

Root surface preparation performed using erythritol powder air-polishing (EMS AIRFLOW PLUS) prior to root coverage surgery with a modified tunnel technique and subepithelial connective tissue graft.

Erythritol Air-Polishing

Manual Root Instrumentation PROCEDURE

Mechanical root surface preparation performed using manual Gracey curettes before root coverage surgery with a modified tunnel technique and subepithelial connective tissue graft.

Manual Root Instrumentation

Eligibility Criteria

• Age: 18 Years - 60 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Multiple RT1 and/or RT2 gingival recessions, symmetrical and bilateral, with a minimum height of ≥ 1 mm
• Full-mouth plaque score (FMPS) \< 15% (assessed on four surfaces per tooth)
• Full-mouth bleeding on probing (FMBOP) \< 15% (assessed on four surfaces per tooth)
• Detectable cemento-enamel junction (CEJ)
• Age ≥ 18 years

You may not qualify if:

• RT3 gingival recessions
• Gingival recessions affecting second and third molars
• Systemic or infectious diseases that may impair wound healing, including active malignancy, diabetes mellitus with HbA1c \> 7.0%, history of head and neck radiotherapy, true xerostomia, and HIV/AIDS
• Cervical caries, non-carious cervical lesions, or Class V restorations interfering with the CEJ
• Active periodontitis
• Use of medications affecting periodontal tissues or wound healing, including systemic corticosteroids, immunosuppressants, isotretinoin, bisphosphonates, and monoclonal antibodies with immunosuppressive, antiresorptive, or antiangiogenic effects
• Smoking
• Pregnancy or breastfeeding

Sponsors & Collaborators

• Medical University of Warsaw: lead

Study Sites (1)

Department of Periodontology and Oral Mucosa Diseases, Medical University of Warsaw, Warsaw

Warsaw, Mazowsze, 00-246, Poland

RECRUITING

MeSH Terms

Conditions

Gingival Recession

Condition Hierarchy (Ancestors)

Gingival Diseases; Periodontal Diseases; Mouth Diseases; Stomatognathic Diseases; Periodontal Atrophy

Study Officials

• Bartłomiej Górski

  Department of Periodontology and Oral Mucosa Diseases, Medical University of Warsaw, Warsaw

  STUDY CHAIR

Central Study Contacts

Magdalena Latkowska - Wiśniewska

CONTACT

+48691470290; magda.latko@gmail.com

Bartłomiej Górski

CONTACT

gorskibartlomiej04@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 21, 2026
• First Posted: February 11, 2026
• Study Start: March 9, 2026
• Primary Completion (Estimated): June 1, 2027
• Study Completion (Estimated): July 1, 2027
• Last Updated: March 10, 2026

Record last verified: 2025-08

Locations

PL (1)