Abstract Background- Indirect pulp capping (IPC) is one procedure that helps to sustain pulp vitality by enabling healing/repair of pulp. Our main aim of the study is to carry out IPC using TheraCal LC and light cure Calcium hydroxide in tooth of patients having deep carious lesion. Also, to check for the preservation of vitality of the same tooth and to compare and find out which among them is the most suitable material for IPC. Material and Methods- 28 patients will be randomly divided into one test group and one control group consisting of 14patients in each group. The test group will be managed by TheraCal LC while the control group will be treated with light cure calcium hydroxide. Clinical examination will be done to check for postoperative pain, tenderness, neural sensibility and radiographical examination will be done to check for PDL space widening, presence of calcific barrier and periapical radiolucency at patient recall of 21days, 3 month and 6 months. The primary and secondary outcome variables will be based on clinical and radiographical success rates noted from the 6 month follow-up that will be conducted. Result- The expected result is that TheraCal LC will give better results in comparison to light cure Calcium hydroxide as pulp capping agent. Conclusion- This study will provide the most suitable material for Indirect Pulp Capping that we can put to use in clinical practice which will help in maintaining pulp vitality as we need a material that has better efficacy and is cost effective as Indirect Pulp Capping agent.