Histological evaluation of pulpotec effect on pulpotomized primary teeth in puppies.

AIM The present study was conducted to histologically evaluate the inflammatory response of dental pulp to Pulpotec versus Formocresol in primary teeth of puppies. METHODS The study was conducted on 24 primary molars of three Mongrel puppies between the ages of six to ten weeks. The mouth of each puppy was divided into two halves; the teeth on the left half were treated using the Pulpotec while those on the right half were treated with the Formocresol. Puppies one, two and three were sacrificed performing the pulpotomies at two, four and six weeks, respectively. The portions of the jaws including pulpotomized teeth were carefully sectioned, stained with hematoxylin and eosin (H & E) and examined histologically by light microscope. RESULTS The results of the two groups showed pulp inflammation that varied from mild, moderate to severe, hydropic degeneration, increased fibrosis, capillary dilatation, disruption of odontoblastic layer and internal root resorption that started earlier in the Formocresol group. CONCLUSION It has been concluded that both groups showed comparable unfavourable histological response.