High volume individual fibre post versus low volume fibre post: The fracture load of the restored tooth

Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

“…The pattern of failure was identical to that reported previously, 23,33,34 although fracture patterns vary among studies depending on tooth mounting and the direction and location of occlusal loading. 7,35 Separate debonding was a common event before fracture in the three groups with both types of loading, similar to the findings of Hatta and others 36 ; its occurrence ranged from 37% in the open laminate static load group to 62% in the composite groups and up to 75% in the fatigue-cycled open laminate group and the liner groups. The fact that most teeth survived additional cycles or higher loads before actual cusp fracture implies that the restoration did not strengthen these teeth.…”

Fracture resistance of endodontically treated teeth using fiber post with an elastic modulus similar to dentin

“…Increasing post length improves retention; however, in the apical region of the canal, the bonding between the post and dentin is unpredictable 5,7) . The use of adhesive resin cement resulted in increased tensile strength between short FRC posts and root dentin, and improved fracture resistance 13,14) . It has been reported that using a short FRC post rather than a long post may yield a higher fracture resistance with a more restorable fracture pattern 15) .…”

The Restorative Use of Fibre-Reinforced Materials in the Posterior Region

“…Through the use of a multipost technique, it is possible to fill large and irregular root cavities more efficiently than with a single, centrally positioned post [85]. Also, with a multi-post technique, or by using a custom post, the amount of luting cement can be minimized [114], thus reducing the residual shrinkage There are several methods to fabricate custom root canal posts [72,87,115,116]. In our study the lateral condensation method of Hatta et al [87] Fracture of the post(s) or the restored teeth themselves are among the most common failures of ETT restoration [118,119].…”

“…Also, with a multi-post technique, or by using a custom post, the amount of luting cement can be minimized [114], thus reducing the residual shrinkage There are several methods to fabricate custom root canal posts [72,87,115,116]. In our study the lateral condensation method of Hatta et al [87] Fracture of the post(s) or the restored teeth themselves are among the most common failures of ETT restoration [118,119]. While the use of metal posts leads more frequently to root fracture, the most common type of failure when FRC posts are used is debonding [120] or the fracture of the post [121,122].…”

“…-Group 5 received as many elastic FRC posts (0.9 mm) as possible bundled according to the thickness of the root canal using the lateral condensation method described by Hatta et al [87]. These posts were gently removed as one unit with a needlenose plier from the root canal, and then light-cured for 40 seconds.…”