International Arab Journal of Dentistry


Capping an exposed pulp in order to maintain the vitality of the pulp is the main purpose of pulp capping procedure. The success of this procedure depends on the capacity of pulp capping agent to stimulate pulp tissue repair and dentin bridge formation. Mineral Trioxide Aggregate (MTA) is a biocompatible agent that allows growth, proliferation and differentiation of mesenchymal cells in the pulp. Despite its many advantages, the handling of the MTA and its long setting time (4 hours) oblige the clinician to postpone the restoration to another day. A new product, called CPM (ciment de Portland modifié), has been lately in use. It has the same characteristics of the MTA added to an easier handling way and a shorter setting time. The aim of this study is to compare histologically the reaction of the pulp tissue after a direct pulp capping of rat molars, using the CPM or the MTA.