Background and Objectives Early Childhood Caries (ECC) is a chronic disease of childhood affecting the primary dentition. ECC begin early in life and can affect the quality of life of child. It is also termed as nursing caries or baby bottle tooth decay. It has a multifactorial etiology and salivary parameters are considered as one of the important etiological factors of ECC. The present study was done to determine the level of salivary calcium and phosphorus in children with ECC, severe ECC and caries free. The main objective of the study is to determine the correlation between calcium and phosphorus level and to compare it with the three groups of children with different caries experience.