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Adding Effect of Cross-linked Hyaluronic Acid to Microneedling After Coronally Advanced Flap in Isolated RT1 Recession
Sponsor: Cairo University
Summary
In patients with single RT1 recessions and thin gingival phenotype, does adding cross-linked hyaluronic acid by microneedling after CAF surgery produce greater gingival thickness gain and higher probability of complete root coverage at 6 months than microneedling alone?
Official title: Evaluation of Gingival Thickness and Root Coverage Outcomes Following Coronally Advanced Flap Combined With Microneedling With or Without Cross-Linked Hyaluronic Acid in RT1 Recession Defects: A Randomized Clinical Trial
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
22
Start Date
2026-07-01
Completion Date
2026-12-01
Last Updated
2026-04-09
Healthy Volunteers
No
Conditions
Interventions
cross-linked hyaluronic acid
Microneedling sessions will be performed 1 month after the CAF procedure to ensure initial flap healing (Huang et al., 2005). The micro-needling technique will be performed under local anesthesia, by using Dr. Pen Ultima M8 MN pen (Dr. Pen; Phoenix, AZ, USA) using 16-Pins gauge with a diameter of 0.18 mm adjusted with 1.5 mm depth at the 6th mode speed of 700 cycles/min (Mostafa \& Alotaibi, 2022). The MN needles are vertically inserted into the keratinized tissue reaching the bone, for 30-40 s per tooth using an intermittent motion along the keratinized tissue. Then, cross-linked hyaluronic acid will be injected in a volume of 0.2mm of a 20 mg/ml concentration with particle size 400 μm. HA injection will be administrated until blanching of gingiva is evident. To ascertain that the HA is distributed evenly, the region will be gently massaged for 2 to 3 min with a sterile gauze soaked in saline (Bawankar et al., 2024). This Microneedling technique with HA injection will be repeated four
Microneedling
Microneedling sessions will be performed 1 month after CAF procedure to ensure initial flap healing (Huang et al., 2005). The micro-needling technique will be performed under local anesthesia, by using Dr. Pen Ultima M8 MN pen (Dr. Pen; Phoenix, AZ, USA) using 16-Pins gauge with a diameter of 0.18 mm adjusted with 1.5 mm depth at the 6th mode speed of 700 cycles/min (Mostafa \& Alotaibi, 2022). The MN needles are vertically inserted into the keratinized tissue reaching the bone, for 30-40 s per tooth using an intermittent motion along the keratinized tissue. This method will be repeated four times at 10-day intervals (Ozsagir et al., 2020).