NCT04693741

Xenografts With Platelet-rich Fibrin Versus Autogenous Bone in Alveolar Cleft Grafting

Xenografts With Platelet-rich Fibrin Versus Autogenous Bone in Alveolar Cleft Grafting: A Comparative Clinical Study

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 36 (estimated)
• Sponsor: Assiut University · Academic / Other
• Sex: All
• Age: 7 Years – 12 Years
• Healthy volunteers: Accepted

Summary

this work aims to evaluate xenografts mixed with PRF versus autogenous bone graft in alveolar cleft grafting.

Detailed description

The alveolar cleft is a maxillary bone defect resulting from incomplete fusion of the medial nasal process (MNP) and maxillary process (MXP) during embryonic development. Alveoloplasty may be classified as primary, secondary, and tertiary depending on the age of the patient. Literature defines primary when the alveoloplasty is performed at the same time as soft tissue repair. If performed at the age of 8 to 9 years before the eruption of the permanent canine, it is classified as secondary; it is classified as late secondary or tertiary if performed in the elderly. For patients with cleft lip and palate, secondary alveolar bone grafting (SABG) of the cleft alveolar ridge is performed when the patient has mixed dentition; SABG is a procedure that aims to create a bony bridge that restores dental arch continuity, repair the oronasal fistula, provide support to the structure of the alar base, facilitate subsequent orthodontic treatment, and promote tooth eruption. Autologous bone grafting is the gold standard for treating alveolar clefts, with the iliac crest bone being the most widely accepted donor site. Other materials such as growth factors, combinations of improved scaffolds and cell treatment/growth factors, biocomposites, and hemostatic agents can be used to regenerate bone and have been the subjects of intensive research.

Conditions

• Alveolar Cleft

Interventions

Type	Name	Description
PROCEDURE	secondary alveolar bone graft	Under general anesthesia, the soft tissue in the gingiva surrounding the alveolar cleft will be injected with 0.5% lidocaine with 1:100,000 parts of epinephrine. At the alveolar cleft site, gingival sulcus incisions will be made on both sides of the cleft. The tissue will then elevated beneath the periosteum. The mucosa of the nasal floor and the oral mucosa will be dissected. Next, the bone particles will be implanted into the bone defect. Then, The cleft site will be closed without tension by the advancement of the gingival flaps.
PROCEDURE	Harvesting of the autogenous bone graft	Under general anaesthesia ,the soft tissue in the superior iliac crest will injected with 0.5% lidocaine with 1:100,000 parts of epinephrine. The cancellous bone will harvested with an osteotome and then cut into small bone granules.
PROCEDURE	Preparation of PRP	10 ml of blood will be collected in vacuum tubes without anticoagulants which are then immediately centrifuged at a rate of 3000 rpm for 10 min. After centrifugation, the resultant product consists of three layers. The topmost layer consisting of acellular PPP (platelet poor plasma), PRF clot in the middle and RBCs at the bottom of the test tube. The attached red blood cells scraped off from it and discarded. The discarded PRF is then mixed with xenograft and placed inside the alveolar defect.

Timeline

• Start date: 2021-01-01
• Primary completion: 2022-11-01
• Completion: 2023-03-01
• First posted: 2021-01-05
• Last updated: 2021-01-05