Gingival Recession Clinical Trial
Official title:
Clinical Comparison Between Two Surgical Techniques for the Treatment of Multiple Gingival Recessions With Porcine Collagen Matrix
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..
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