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

Not Applicable

• Conditions: Gingival Recession, Generalized; Gingival Recession; Xenograft Model
• Interventions: Procedure: tunnel technique for Root coverage with Porcine collagen Matrix; Procedure: extended fla technique for Root coverage with Porcine collagen Matrix

• Registration Number: NCT03619096
• Lead Sponsor: University of Sao Paulo

Brief 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..

Detailed Description

Not available

Study Timeline

• Study Start: 2017-03-06
• Study First Submitted: 2018-01-17
• Primary Completion: 2018-06-06
• Status Verified: 2018-08
• Study First Submitted QC: 2018-08-01
• Last Update Submitted: 2018-08-01
• Study First Posted: 2018-08-07
• Last Update Posted: 2018-08-07
• Study Completion: 2019-07-06

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

-bilateral multiple gingival recession type Miller class I or II with at least one tooth with 3 mm of gingival recession height

Exclusion Criteria

• diabetics
• pregnant women
• chronic use of medication
• periodontitis
• smokers

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Test Group (tunnel technique)	tunnel technique for Root coverage with Porcine collagen Matrix	It Will be performed root coverage of multiple recessions using porcine collagen matrix with a tunnel Technique
Control Group (extended flap technique)	extended fla technique for Root coverage with Porcine collagen Matrix	It Will be performed root coverage of multiple recessions using porcine collagen matrix with a extended flap technique

Primary Outcome Measures

Name	Time	Method
Root coverage (milimeters)	baseline, 6 and 12 motnhs	Root Coverage is measured by the difference between Gingival Recession Hight at baseline and 12 months

Secondary Outcome Measures

Name	Time	Method
Keratinized tissue (milimeters)	baseline, 6 and 12 months	Keratinized tissue is measured by its width and thickness.

Trial Locations

Locations (1)

Marilia Bianchini Lemos Reis; 🇧🇷 Ribeirão Preto, São Paulo, Brazil