Abstract
Nowadays, the preservation of dental pulp vitality is an integral part of our daily therapies. The success of these treatments depends on the clinical situation as well as the biomaterials used. Mineral Trioxide aggregate and BiodentineTM are commonly used as pulp capping materials. One objective of vital pulp therapy is the repair/regeneration of the pulp. In addition to the initial inflammatory status of the pulp, the nature and quality of the new mineralized tissue obtained after pulp capping directly influence the success of the treatment. In order to characterize the reparative dentin, in the current study, the chemical composition and microstructure of the dentin bridge after direct pulp capping using Biodentine™ and mineral trioxide aggregate (MTA) was studied by using Raman microspectroscopy and scanning electron microscopy, respectively. The results showed that the reparative dentin bridge observed in both groups presented dentin tubules and chemical composition similar to primary dentin. With the limitations of this study, the calcium-silicate-based cements used as pulp capping materials provide an optimal environment for pulp healing, resulting in a reparative dentin resembling on certain points of the primary dentin and the regeneration of the pulp.
Highlights
Dental pulp is a loose connective tissue enclosed within rigid dentin walls
The samples were analyzed for every group and three analysis points were obtained for every area of interest
For the first time to the best of our knowledge, we evaluated the nature of the newly formed tissue after direct pulp capping using mineral trioxide aggregate (MTA) and BiodentineTM by using electron microscopy and Raman spectroscopy
Summary
Dental pulp is a loose connective tissue enclosed within rigid dentin walls. Primary dentin is the tubular dentin formed by actively secreting primary odontoblasts during crown formation. BiodentineTM has shown better compression and surface properties than other tricalcium silicate-based materials [9] The usefulness of this material as a restorative material as well as a direct pulp capping agent has been demonstrated in humans and in rats [3,10,11,12]. These two materials (MTA and BiodentineTM) are well known and are both capable of inducing the formation of new mineralized tissue in continuity with secondary dentin [2]. A comparison was made with the primary dentin serving as the control dentin
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