After hemostasis of the exposed pulp is achieved, Apple vinegar will be used for dentin conditioning for 5 mins then 1-2 mm thickness of MTA placed on the exposed pulp chamber.

After hemostasis of the exposed pulp is achieved, EDTA 17 % will be used for dentin conditioning then 1-2 mm thickness of MTA placed on the exposed pulp chamber.

Application of each chelating agent for 5 minutes for dentin conditioning followed by placement of MTA on the pulp chamber.

1. Through post operative pain assessment using Visual analogue scale (0-3) scores as 0 represents no pain, 1= mild pain, 2= moderate pain and 3= sever pain. VAS scores marked at intervals of 2,6,24,48 and 72 hours.
2. Clinical success criteria:

Clinical parameters indicating successful treatment include the following criteria:

• Absence of pain except for the first 24 hours.
• Normal soft tissue around the tooth ( no swelling, no sinus tract).

Pulp vitality will be assessed through pulpal response to thermal and electrical pulp tests. at 3,6,12 months

Using digital periapical radiograph at 3,6,12 months. Radiographic success criteria include:

• No periapical pathosis.
• No radicular resorption defects.