The aim of the study is to evaluate the efficacy of combinations of different scaffolds (blood clot, platelet rich fibrin, collagen) and sodium hypochlorite concentrations (0.5%- 2.5%) in regenerative endodontics of immature non-vital anterior teeth clinically and radiographically using cone-beam computed tomography.
Patients will be divided randomly into six equal groups (n=8) * Group I: BC scaffold and 0.5% concentration of NaOCl irrigant solution. * Group II: BC scaffold and 2.5% concentration of NaOCl irrigant solution. * Group III: PRF scaffold and 0.5% concentration of NaOCl irrigant solution. * Group IV: PRF scaffold and 2.5% concentration of NaOCl irrigant solution. * Group V: Collagen scaffold and 0.5% concentration of NaOCl irrigant solution. * Group VI: Collagen scaffold and 2.5% concentration of NaOCl irrigant solution. CBCT image will be obtained for baseline records after placement of the final resin restoration then the patients will be recalled after 6 months and 12 months for evaluating any changes in root length, root canal width, apex diameter and lesion size if present. The success rates for patients at each recall visit will be scored as follows 1. Score 0: Persistence of clinical and radiographic findings. 2. Score 1: Absence of swelling, drainage and pain along with radiographic evidence of osseous healing + no evidence of increased root dimensions. 3. Score 2: Absence of swelling, drainage and pain along with radiographic evidence of osseous healing + radiographic root development.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
48
Copious gentle irrigation will be provided without canal instrumentation using 20 mL 1.5% NaOCl in a slow flowing rate by a 27-gauge irrigating side vented needle positioned 2 mm from the root end followed by 20 mL saline. After root canal dryness using paper points , double antibiotic paste (DAP) containing 500 mg of metronidazole and ciprofloxacin mixed with 0.5 mL polypropylene glycol giving a creamy paste will transported into root canal via lentulo spiral filler positioned 2 mm shorter than the WL apically and to level just below the cement-enamel junction (CEJ) coronally. Access cavity will be sealed response to the initial treatment will be assessed after 3 weeks.(21) In the next visit, If the patient is asymptomatic, the DAP will be removed using 10 mL of NaOCl according to the concentrations mentioned in each study group, followed by copious irrigation with 10 mL of 17% EDTA (22) and normal saline then drying the canals with sterile paper points.
Faculty of Dentistry, Tanta University
Tanta, Egypt
RECRUITINGdiameter of periapical radiolucency
radiographic changes in root
Time frame: 1 year
diameter of root length
radiographic changes in root
Time frame: 1 year
Pain scale
Time frame: 1 year
visual changes in discoloration
Time frame: 1 year
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