Introduction: The dental pulp is a highly specialized tissue because of its capability to regenerate. The pulp shows inflammation in response to insult and if untreated, it leads to pulp infection and pulp death.
Objective: Objective of this study was to compare the histological changes in the odontoblast layer of coronal and radicular pulp following 2 mm coronal tooth preparation.
Material and Methods: An experimental study was performed. Thirty premolar teeth intended for orthodontic extraction were categorized into two groups of fifteen each which were the control group and the experimental group (Teeth prepared up to 2mm using high-speed hand piece).
Results: There was a significant difference (p value <0.001) between control and experimental groups in the odontoblastic layer and presence of nuclei in its cells of coronal dental pulp. Whereas radicular area of dental pulp has not exhibited any significant difference between control and experimental group.
Conclusion: The results help us to understand the effects of the injury on the healthy dental pulp. Keeping in view the histological changes in tooth pulp following 2mm of coronal tooth preparation, the radicular pulp was normal while histological changes were seen in the coronal pulp.