Fracture resistance of endodontically treated maxillary premolars restored with horizontal glass fiber post: An in vitro and finite element analysis
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Maxillary premolars are subjected to a combination of vertical and lateral occlusal forces. Furthermore, premolars present with an anatomical shape and unfavorable crown to root ratio, making them more prone to fractures than other posterior teeth. When endodontic treatment is combined with mesio-occluso-distal (MOD) cavities, the susceptibility to fracture increases.