Study: NCT05803525

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Intra-canal medication protocol
Description: 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.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Intra-canal medication protocol
Description: 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.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Intra-canal medication protocol
Description: 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.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Intra-canal medication protocol
Description: 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.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Intra-canal medication protocol
Description: 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.