BACKGROUND: Endodontically treated @entity4500 have significantly different physical and mechanical properties compared to vital @entity4500 and are more prone to @entity174 . The study aims to compare the @entity174 resistance of endodontically treated @entity4500 with and without post reinforcement, custom cast post-core and prefabricated post with glass ionomer core and to evaluate the ferrule effect on endodontically treated @entity4500 restored with custom cast post-core. MATERIALS AND METHODS: A total of 40 @entity1 maxillary central incisors with similar dimensions devoid of any root caries, restorations, previous endodontic treatment or cracks were selected from a collection of stored extracted @entity4500 . An initial @entity1346 index of each tooth was made. They were treated endodontically and divided into four groups of ten specimens each. Their apical seal was maintained with 4 mm of gutta-percha. Root canal preparation was done and then post core fabrication was done. The prepared specimens were subjected to load testing using a computer coordinated UTM. The @entity174 load results were then statistically analyzed. One-way ANOVA was followed by paired t-test. RESULTS: 1. Reinforcement of endodontically treated maxillary central incisors with post and core, improved their @entity174 resistance to be at par with that of endodontically treated maxillary central incisor, with natural crown. 2. The @entity174 resistance of endodontically treated maxillary central incisors is significantly increased when restored with custom cast post-core and 2 mm ferrule. CONCLUSION: With 2 mm ferrule, @entity4500 restored with custom cast post-core had a significantly higher @entity174 resistance than @entity4500 restored with custom cast post-core or prefabricated post and glass ionomer core without ferrule.

An In Vitro Study on the Effects of Post-Core Design and Ferrule on the XXXX Resistance of Endodontically Treated Maxillary Central Incisors.

@entity4500 :: ('MESH:D014071', 'Disease') :: ['teeth'] @entity1 :: ('9606', 'Species') :: ['human'] @entity1346 :: ('MESH:D012828', 'Chemical') :: ['silicone'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fracture']
@entity174 :: (MESH:D050723,Disease) :: ['Fracture']
