An interventional study of Injectable PRF and MINST in Intrabony Periodontal Defects, sponsored by Cairo University. Recruiting at 1 site in Egypt. Per ClinicalTrials.gov, last updated 2026-07-29.
Sponsored by Cairo University · Not applicable, Interventional, and Treatment
The purpose of this study is to evaluate change in pocket depth following using minimally invasive non surgical combined with injectable platelet concentrate .
Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.
Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
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Exclusion Criteria:
Participants will receive minimally invasive non-surgical periodontal therapy (MINST) with adjunctive local application of injectable platelet-rich fibrin (I-PRF) into the selected periodontal intrabony defect. I-PRF will be prepared from 10 mL of autologous venous blood and injected into the cleaned defect, followed by placement of a custom-made transparent vacuum-formed stent for 15 minutes to prolong local contact. Participants will receive standard oral hygiene instructions and periodontal follow-up.
Biological: Injectable PRF
Participants will receive minimally invasive non-surgical periodontal therapy (MINST) alone for the selected periodontal intrabony defect, without adjunctive I-PRF or other biomaterials. Participants will receive standard oral hygiene instructions and periodontal follow-up.
Procedure: MINST
I-PRF will be prepared from 10 mL of autologous venous blood and injected into the cleaned defect, followed by placement of a custom-made transparent vacuum-formed stent for 15 minutes to prolong local contact
Participants will receive minimally invasive non-surgical periodontal therapy (MINST) alone using P3 Woodpecker piezoelectric scaler for the selected periodontal intrabony defect
Change in pocket depth
Baseline measurements will be taken at the first visit. Probing depth will be measured at six sites per tooth (mesiobuccal, midbuccal, distobuccal, mesiolingual, midlingual, distolingual) using a UNC-15 periodontal probe
Time frame: 6 months
Pocket closure
Pocket depth of less than or equal 4 millimeters with no bleeding on probing at 6-month follow-up. PD will be measured from the gingival margin to the base of the pocket at six sites per tooth using a UNC-15 periodontal probe. PD reduction will be calculated by subtracting the 6-month PD from baseline PD
Time frame: 6 months from baseline
Clinical attachment gain
CAL will be measured from the cementoenamel junction (CEJ) to the base of the pocket at the same six sites using a UNC-15 periodontal probe. CAL gain will be calculated by subtracting follow-up CAL (6 months) from baseline CAL
Time frame: 6 months from baseline
Radiographic defect reduction:
Periapical radiographs of selected study sites will be taken at baseline and at 6 months using the parallel technique with Rinn holders. Each participating practice used the same setting and exposure time for radiographs taken at both visits to standardize positioning and minimize distortion of sequential radiographs
Time frame: 6 months
Patient reported outcomes
To evaluate patient perceptions about the performed procedure and post-therapy period. The extent of discomfort and/or pain experienced will be evaluated using a horizontal visual analog scale (VAS) measured from scale from 1 to 10 where 1 is the lowest \& 10 is the highest.
Time frame: 6 months
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Cairo University