Nonsurgical endodontic treatment of type II dens invaginatus.

The endodontic treatment of teeth with dens invaginatus, characterized by an infolding of enamel and dentin, extending deep into the pulp cavity near the root apex, may be complicated and challenging. The complexity of the internal anatomy may create challenges for the complete removal of diseased pulpal tissue and the subsequent sealing of the canal system. Because of the bizarre root canal anatomy and widely open apex, a combination of nonsurgical and surgical endodontic treatment or extraction is the most common choice of therapy. This article describes case reports of nonsurgical endodontic treatment of Type II dens invaginatus associated with periradicular lesion.

Finite element analysis of stress concentration in Class V restorations of four groups of restorative materials in mandibular premolar.

AIM: To study the concentration of stress in class V restoration of four different restorative materials subjected to occlusal load of 100N, 150N, 200N, 250N and to analyse the obtained data with the listed properties of the restorative material. MATERIALS AND METHODS: Using FEM analysis the stresses generated in a class V lesion in a mandibular premolar was studied. RESULTS: Within the framework of the aforementioned views, and from the results of the study it can be concluded that microfilled composite is the most suitable restorative material followed by flowable composite, glass ionomer cement and resin modified glass ionomer cement. CONCLUSION: Restoration of Class V lesions with materials of higher modulus of elasticity will enable better stress distribution.