Low-level Laser Therapy Versus Formocresol in Primary Molar Pulpotomies

Inclusion Criteria: Children inclusion criteria: * Children aged 5-8 years with at least two bilateral deep carious primary molars indicated for pulpotomy. * Children who are physically and mentally healthy without any known medical history of systemic conditions contraindicating pulp therapy. * Children who had "positive" or "definitely positive" behavioral ratings according to the Frankl behavior classification scale (Frankl, 1962). * Children whose parents signed an informed consent for the child's participation in the study. Teeth inclusion criteria: Teeth were selected according to clinical and radiographic criteria. Clinically, the study included: * Teeth with restorable crowns * Teeth with pathologic carious exposure of vital pulps * Teeth with no tenderness to percussion, physiologic or pathologic mobility or any clinical evidence of pulp inflammation or degeneration such as history of swelling, pain or presence of sinus tract. Radiographically, the recruited teeth should have: * Normal radiographic appearance with healthy supporting tissues * No pulp calcification * No internal or external root resorption * No periapical or inter-radicular radiolucency * At least two thirds of the root remaining (not more than one third of the root is physiologically resorbed) Exclusion Criteria: * Any child complained of clinical signs such as pain, swelling, abnormal mobility, vertical or lateral tenderness to percussion was excluded from the study. * Radiographically, any child with signs of internal or external root resorption or periapical or inter-radicular pathology was omitted from the study.