The resin-matrix cement layer thickness resultant from the intracanal fitting of teeth root canal posts: an integrative review

ConclusionsIn fact, the layer thickness of resin-matrix cements depends on the fitting of endodontic posts to tooth root canals. An increase of resin cement  thickness causes the appearance of defects like pores, micro-cracks, and micro-gaps that can induce stress concentration and fractures at interfaces.Clinical relevanceThe fitting of the endodontic  post into the teeth root canal determine the layer thickness of the resin-matrix cement to establish an adequate retention. However, the increase in the thickness of the resin-matrix cement layer can lead to a high number of defects like pores or cracks and therefore decrease the strength of the interface.
Source: Clinical Oral Investigations - Category: Dentistry Source Type: research