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CompletedNCT04195737Updated Mar 27, 2023

Comparison of Coronally Advanced Root Coverage Procedure With Collagen Matrix and Connective Tissue Graft

An interventional study of Ossix volumax collagen matrix and Connective Tissue Graft in Gingival Recession, sponsored by Krishnadevaraya College of Dental Sciences & Hospital. Completed at 1 site in India. Open to participants aged 18 Years to 58 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-03-27.

Sponsored by Krishnadevaraya College of Dental Sciences & Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years to 58 Years
Sex
All
01

Study summary

The present study is a human, prospective, randomised controlled clinical trial conducted to explore the outcome of a coronally advanced flap with ossix volumaxTM collagen matrix and connective tissue graft in the treatment of multiple adjacent gingival recession defects.

The trial is in accordance with the Consolidated Standards of Reporting Trials (CONSORT) criteria, 2010.

Read the detailed description

Periodontal plastic surgery are surgical procedures performed to prevent or correct anatomic, developmental, traumatic or disease-induced defects of the gingiva, alveolar mucosa or bone. It includes various soft and hard tissue procedures aimed at gingival augmentation, root coverage, correction of mucosal defects at implants, crown lengthening, gingival preservation at ectopic tooth eruption, removal of aberrant frena, prevention of ridge collapse associated with tooth extraction and augmentation of the edentulous ridge.1

Different predisposing anatomic features can result in recession such as position and anatomy of teeth in the dental arch, bony dehiscence, thickness of the alveolar mucosa, muscle pull, orthodontic treatment, thin gingival biotype, buccal prominence of teeth, lack of keratinized tissue, abnormal frenum attachment, or patient related factors such as vigorous brushing or chronic gingival inflammation.2 The migration of the marginal tissue to an apical position may lead to esthetic concern, dentin hypersensitivity, root caries, and cervical wear. Treatment modalities for gingival recession have many influencing factors such as defect dimensions (depth, width), site (maxilla, mandible), defect number (single, multiple), soft tissue anatomy (keratinized tissue quality/quantity; papilla height/width; frenum/ muscle pull; vestibular depth) tooth position etc.

Various surgical techniques for the treatment of recessions includes the use of full or partial thickness flap with various soft tissue grafts such as epithelized free gingival grafts (FGG) or sub-epithelial connective tissue graft (SCTG) in conjunction with various types of flaps eg: (envelope, coronally or laterally positioned flap, double pedicle flap (DPF) or tunnelling (TUN) alone or combined with laterally positioned pedicle flaps (LPPF).3 Coronally advanced flap (CAF) with connective tissue graft (CTG) is considered as the gold standard treatment for gingival recession. Commercially available materials for root coverage are expanded Poly Tetra Fluoro Ethylene (Gore-Tex), polglactin, Collagen membranes like biogide, biomend, resolute, alloderm, collatape etc, collagen matrix such as mucograft, human amniotic membrane, dermagraft, ossix.4

Recently in a case report using platelet concentrate carried on collagen sponge (ossix) showed favourable results.4 Ossix volumax™ has shown De novo bone formation when used in alveolar ridge augmentation procedure.5

Ossix volumax™ (Datum dental) is one such recently identified sugar cross-linked bio programmed collagen matrix. Ossix volumax™ is a volumizing, thick collagen scaffold, featuring glymatrix technology. The properties are thick and expand when wet, excellent handling, easy to use, adapts and adheres to the bone.5 It undergoes rapid ossification (in CT scans and histology after one month).6

Literature search till date has shown no studies regarding the use of type 1 sugar cross-linked collagen membrane for treatment of gingival recession. So, the present study is undertaken with the aim to comparatively evaluate the advantages of ossix volumax collagen membrane with subepithelial connective tissue graft for the treatment of multiple adjacent gingival recession defects.

02

Conditions studied

  • Gingival Recession

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Keywords

  • Gingival Recession Coverage
03

In context

Gingival Recession

402 studies on the registry are indexed under Gingival Recession; 98 are open to participants now.

This study's enrollment of 60 is above the median of 30 across 368 interventional studies indexed under Gingival Recession.

Browse Gingival Recession studies →

Lead sponsor

Krishnadevaraya College of Dental Sciences & Hospital is the lead sponsor of 51 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 58 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Age greater than or equal to18 years.
  • Multiple adjacent Miller's class I and class II gingival recession sites.
  • Patients with healthy or treated periodontal conditions.
  • Patients with esthetic concerns.
  • Absence of uncontrolled medical conditions.
  • Full mouth plaque score \</= 10% (O'Leary 1972)
  • Full mouth bleeding score \<10% (Ainamo and Bay 1975)

Exclusion criteria

Exclusion Criteria:

  • Gingival biotype less than 0.8 mm.
  • Pregnant or lactating females.
  • Tobacco smoking.
  • Untreated periodontal conditions.
  • Use of systemic antibiotics in the past 3 months.
  • Patients treated with any medication known to cause gingival hyperplasia
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Root coverage with ossix volumax collagen matrix

    Evaluation of root coverage achieved by collagen matrix in conjunction with coronally advanced flap in patients with multiple gingival recession.

    Procedure: Ossix volumax collagen matrix

  • Active comparator
    Root coverage with connective tissue graft

    Evaluation of root coverage achieved by connective tissue graft in conjunction with coronally advanced flap in patients with multiple gingival recession

    Procedure: Connective Tissue Graft

Interventions

  • ProcedureOssix volumax collagen matrix

    Under LA horizontal incision is made.Split-full-split thickness flap is elevated.The remaining soft tissue of the anatomic interdental papillae deepithelialized.Coronal advancement of the flap obtained and closed using sling suture.

  • ProcedureConnective Tissue Graft

    Under LA parallel incisions is made 1-2 mm first molar to canine.Graft incision 1 mm coronal to the horizontal flap incision.Through this incision designed graft thickness is obtained.The graft obtained between the two horizontal incisions has a 1 mm coronal strip that require depithelisation with a knife and closed using interrupted suture.

06

What researchers measure

Primary outcomes

  1. gingival recession depth

    measured as the distance from the CEJ to the gingival margin.

    Time frame: 6 months

  2. Complete root coverage

    root coverage regarded as complete with gingival margin located at the level of Cemento Enamel Junction

    Time frame: 6 months

  3. Mean root coverage

    (Baseline recession depth - 6 month recession depth/Baseline recession depth)\*100

    Time frame: 6 months

Secondary outcomes

  1. pocket Probing depth

    measured as the distance from the gingival margin to the base of gingival sulcus

    Time frame: 6 months

  2. Gingival Recession width

    measured as the distance between the mesial gingival margin and distal gingival margin (measurement will be recorded on a horizontal line tangential to the cementoenamel junction).

    Time frame: 6 months

  3. Clinical attachment level

    measured as Gingival Recession Depth + Probing Depth

    Time frame: 6 months

  4. Gingival biotype thickness

    measured 3mm apically from the free gingival margin at the mid buccal aspect of the tooth.

    Time frame: 6 months

  5. Apico-coronal width of keratinized tissue

    ) measured as the distance from the mucogingival junction to the gingival margin,with the mucogingival junction location determined using (Schiller's Potassium Iodide Solution).

    Time frame: 6 months

  6. Root coverage esthetic score

    The Aesthetic evaluation was performed according to the root coverage aesthetic score system (RES). Five Variables evaluated which are as follows: Level of Gingival margin (GM) Marginal Tissue Contour (MTC) Soft Tissue Texture (STT) Mucogingival Junction(MJ) alignment Gingival Colour (GC) The values ranges between 0 - 6.Higher the value better is the outcome.

    Time frame: 6 months

  7. Plaque index

    It is measured by using UNC 15 probe.The values lie between 0 - 3.Higher the outcome the prognosis will be poor.

    Time frame: 6 months

  8. Gingival index

    It is measured by using UNC 15 probe.The values lie between 0 - 3.Higher the outcome the prognosis will be poor.

    Time frame: 6 months

  9. Gingival Bleeding index

    It is measured by using UNC 15 probe.The values lie between 0 - 1. And presence or absence of bleeding is evaluated.

    Time frame: 6 months

07

Study locations

1 site
  • Krishnadevaraya college of dental sciences
    Bangalore, Karnataka 562157, India
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 27, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04195737
Lead sponsor
Krishnadevaraya College of Dental Sciences & Hospital
Responsible party
Sponsor
First posted
Dec 12, 2019
Start date
Dec 12, 2019
Primary completion
Jul 17, 2021
Completion
Aug 6, 2021
Last update
Mar 27, 2023

Study contacts

Prabhuji MLV
study director · Krishnadevarya Dental College

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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