Pulpal reactions following experimental acute trauma of concussion type on immature dog teeth

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Abstract
The pulpal reactions of 14 immature incisors of two dogs were histopathologically evaluated 45 days after experimental mechanical blows that did not, as shown by post‐traumatic clinical examination, cause fracture, displacement or loosening of the teeth. The more significant pulpal reactions in all specimens were the coagulation necrosis of the coronal pulp and the hyalinization of the central region of the radicular pulp. Dystrophic calcifications within coronal or radicular necrotic tissue, and absence of inflammatory infiltration were also observed in all traumatized teeth.