15 August 2025
: Case report 
Coronally Advanced Entire-Papilla Preservation Flap with Recombinant Human Platelet-Derived Growth Factor and Freeze-Dried Bone Allograft for Treatment of Isolated Intrabony Defect
Unusual or unexpected effect of treatment
Shatha Bamashmous ADEFG 1*, Abdullah Bamashmous ABDEG 2DOI: 10.12659/AJCR.948635
Am J Case Rep 2025; 26:e948635
Figure 2 Intraoperative views: (A) A horizontal incision at the base of the distal papilla of #11 and a vertical incision at the distal-line angle of tooth #11. (B) Flap elevation and preparation of the interdental tunnel, achieving full access to the defect after debridement. (C) Placement of freeze-dried bone allograft mixed with rhPDGF-BB in the defect area. (D) The connective tissue graft was sutured over the defect. (E) Primary closure of the surgical area was achieved with interrupted sutures along the vertical incision with a suspension suture at the mesial papilla and a sling suture at the distal papilla of #11.