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Two Different Surgical Techniques for the Treatment of Multiple Gingival Recessions With Porcine Collagen Matrix

NCT03619096 · Status: WITHDRAWN · Phase: NA · Type: INTERVENTIONAL

Last updated 2026-04-15

No results posted yet for this study

Summary

The gold standard for gingival recession treatment is the coronal repositioning of the flap associated with the subepithelial connective tissue graft. The porcine collagen matrix (PCR) has been used as a substitute for subepithelial connective tissue graft in periodontal plastic surgery and has achieved similar results. The PCR use has the advantage of avoiding possible pre and postoperative complications , as well as overcome the limitations presented by autograft . The different surgical techniques used for root coverage seek predictability and success . For this, besides the type of incision placements flap and graft are the most important because the healing benefits and outcome .

The aim of this study is to compare two surgical techniques for root coverage and evaluate which one provides better clinical outcomes and less morbidity . 20 adults , nonsmoking patients , showing multiple bilateral gingival recessions , class I or II Miller located in canine, first and second premolars are selected. Both techniques use the PCR as a graft . However, in one Quadrant partial flap will be held together with relaxing incisions through an intrasulcular incision, PCR will be positioned 1 mm apical to the cementoenamel junction (CEJ) and the flap will be positioned 1 mm coronal CEJ. In the opposite quadrant periosteal envelope that does not use relaxing incisions, avoiding any scars, will be performed with the PCR. The clinical parameters (gingival recession height and width, keratinized tissue thickness and width) will be evaluated 2 weeks after basic periodontal therapy and after 6 and 12 months to surgical procedures..

Conditions

  • Gingival Recession
  • Xenograft Model
  • Gingival Recession, Generalized

Interventions

PROCEDURE

tunnel technique for Root coverage with Porcine collagen Matrix

Tunnel technique for root coverage for multiple gingival recessions, using porcine collagen matrix

PROCEDURE

extended fla technique for Root coverage with Porcine collagen Matrix

Extended flap technique for root coverage for multiple gingival recessions, using porcine collagen matrix

Sponsors & Collaborators

  • University of Sao Paulo

    lead OTHER

Principal Investigators

  • Arthur Belem Novaes JR · University of Sao Paulo

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2017-03-06
Primary Completion
2018-06-06
Completion
2019-07-06

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03619096 on ClinicalTrials.gov