Study: NCT06065774

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with SCTG
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~SCTG was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with SCTG
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~SCTG was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with collagen matrix mucograft
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~collagen matrix was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with collagen matrix mucograft
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~collagen matrix was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with collagen matrix mucograft
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~collagen matrix was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: The Laterally Closed Tunnel Technique with collagen matrix mucograft
Description: Local anesthesia using 4% articane with 1:100.000 epinephrine was applied.•~Then specially designed tunneling instruments \[devmed\] were used through the sulcular incision to create a pouch.~A microsurgical blade was used at the inner surface of the pouch till sufficient tissue release was achieved.~Tissue forceps was used to approximate the mesial and distal margin of the gingiva at the pouch margin.~After harvesting the graft, it was placed at the prepared pouch after root surface biomodification using EDTA gel 24% for 2 minutes and copious rinsing with saline solution.~collagen matrix was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Modified Coronally Advanced Tunnel Technique with SCTG.
Description: Supraperiosteal incisions was extended to the mucosal level beyond the MGJ to allow sufficient tissue mobility and release.~The tunnel was extended in all directions around the recession defect to create a sufficient pouch for connective tissue graft stabilization.~The interdental papilla tunneling adjacent to the defect was a critical step for technique success.~Then perfect root planning was performed at the denuded root surface to remove the necrotic cementum at the accessible recession defect.~Subsequently palatal anesthesia was given to harvest palatal SCTG using deepitheliailized free gingival graft (FGG) technique.~SCTG was pulled using single or mattress sutures and the graft was fixed mesial and distal at the inner part of the pouch using resorbable suture material \[Vicryl suture\], then the graft was sutured around the neck of the CEJ by sling suture 6/0 polypropylene.