Probability of survival and failure mode of endodontically treated incisors without ferrule restored with CAD/CAM fiber-reinforced composite (FRC) post-cores

Intra-radicular retention with custom designed CAD-CAM fibRe-reinforced composite post-core: a dental technique

“…Endodontically treated anterior teeth restored with FRC post-cores showed a promising probability of survival, in vitro, for loads consistent with anterior masticatory forces and favourable failure modes (93% at 25N and 90% at 50N). 17 Additionally, no statistically significant differences were observed compared to prefabricated fibre post or cast metal post-core. 17 However, metal post-cores showed greater strength (431N), compared to prefabricated (200N) or CAD-CAM FRC post-cores (202N).…”

“…17 Additionally, no statistically significant differences were observed compared to prefabricated fibre post or cast metal post-core. 17 However, metal post-cores showed greater strength (431N), compared to prefabricated (200N) or CAD-CAM FRC post-cores (202N). Consequently, at a set load of 100N, 17 teeth restored with metal posts demonstrated a higher probability of survival, compared to those restored with CAD-CAM posts.…”

“…13 In contrast, prefabricated fibreglass posts feature continuous unidirectional fibres. 17 The orthotropic behaviour of CAD-CAM FRC may result in a more reinforced post-core structure, potentially indicating a reduced probability of failure. 13,17…”

“…17 The orthotropic behaviour of CAD-CAM FRC may result in a more reinforced post-core structure, potentially indicating a reduced probability of failure. 13,17…”

Indirect restorative systems—A narrative review

“…The histological characteristics and properties of dentin make its behavior as a substrate not as predictable as enamel; however, there is no contraindication of the use of any indirect restorative system as long as all procedures recommended by the manufacturers are strictly followed 259,260 . In this context, pulp vitality and presence of endodontic treatment are also important parameters for the success of tooth supported reconstructions and choice of the indirect restorative system, along with the presence and height of the ferrule and the type of intra‐radicular reconstruction for the latter condition (i.e., post material that might significantly influence the biomechanical behavior of endodontically‐treated teeth) 261 . In addition, the interocclusal space should be included in the clinical assessment for both tooth and implant supported restorations as it will influence the thickness of the restoration, choice of the implant component, among other aspects that are crucial to determine the best indirect restorative option for each clinical scenario, in which the esthetic‐strength trade‐off dictates the final clinical selection.…”