Introduction: A novel technique with encouraging outcomes for maintaining pulp vitality and promoting the production of reparative dentin is by using diode laser. Consequently, the current investigation may be beneficial. Aim: To evaluate the impact of diode laser with a direct pulp capping (DPC) material on the development of dentin bridge against traditional approach. Patients and methods: 32 patients were selected; patients were split into two equal groups at random. A laser-assisted DPC group utilizing a diode laser before applying MTA and a standard group of DPC utilizing MTA only. After 3, 6, and 12 months, dentin bridge thickness was measured and the photographs were analyzed using a digital program called Digora 2.5. Results: According to clinical assessment data, 14 cases had clinical success. Radiographically after 3 and 6 months, discernible difference between the two groups in terms of thickness of dentin changes was not shown; however, a year later, the group of lasers had a significant statistically greater median thickness of dentin than the standard group. There was no statistically significant difference between the two groups at 3, 6, and 12 months when comparing the median of the overall dentin thickness. Conclusions: On short term check ups, both approaches were successfully equal in preserving vitality of the pulp and promoting the development of dentin bridge from a clinical and radiographic standpoint. Diode laser has enhanced the prognosis of DPC in longer-term follow-ups by virtue of its biostimulating influence on the formation of dentin bridges, sterilization and hemostasis.