Inclusion Criteria:  No history of spontaneous or nocturnal pain. History of transient pain of sensitivity resulting from various stimuli: hot, cold and sweets. Patient who had a bilateral deep carious lesion at second primary molars. absence of tenderness to percussion absence of physiologic or pathologic tooth mobility Radiographic evidence of no internal or external resorption. There is not an intraradicular or periapical bone loss or widening of the periodontal ligament space.  Exclusion Criteria:  history of spontaneous or nocturnal pain. Patient who had a unilateral deep carious lesion. presence of tenderness to percussion presence of physiologic or pathologic tooth mobility Radiographic evidence of internal or external resorption. There is an intraradicular or periapical bone loss or widening of the periodontal ligament space.