The primary aim is to compare the behavior of the children during using conventional manual instrumentation versus rotary instrumentation by single rotary system for pulpectomy in primary molars through a Randomized Clinical Trial.
The main question it aims to answer is:
Is there a difference in the behavior of the children when using single rotary file system versus manual instrumentation in pulpectomy in primary molars?
Restorable mandibular second primary molars with clinical signs or symptoms of irreversible pulpitis.
Absence of internal or external root resorption.
Absence of periapical or inter-radicular radiolucencies.
Uncooperative children.
Children with systemic disease.
Physical or mental disabilities.
Refusal of participation.