Single-file Pulpectomy in Primary Molars

Inclusion Criteria

• •Children categorized as class I or II according to American Society of Anesthesiologists (ASA).
• •Children aged between 4 and 6 years with at least one necrotic primary second mandibular molar.
• •History of dull toothache over an extended period of time
• •History of spontaneous pain or pain at night
• •Swelling adjacent to tooth with or without a sinus tract
• •Abnormal tooth mobility
• •Presence of necrotic pulp tissue or purulent discharge when the pulp chamber was accessed
• •Interruption of lamina dura or thickening of periodontal ligament space
• •Furcational radiolucency did not surpass half of the distance between the furcation and permanent successor
• •Negative findings of internal root resorption
• •External root resorption confined to the apical third and with at least two-thirds of the root length was intact