Effect of Obturating Systems, Dowel Materials, and Adhesive Luting Techniques on the Resistance to Fracture of Endodontically Treated Teeth

Abstract

In this study, three factors played a part in enhancing the resistance to fracture of endodontically treated teeth. High resistance to fracture was achieved when ceramic dowels were luted with total-etch technique in gutta-percha-obturated teeth.

Active application of liquid etching agent improves adhesion of fibre posts to intraradicular dentine

“…Etch‐and‐rinse adhesive systems have shown predictable results in fibre‐post adhesive cementation to radicular dentine (El Guindy & Fouda ). The bonding mechanism of etch‐and‐rinse adhesive systems to the dentine walls of canals is essentially micromechanical (Pashley et al .…”

Influence of inorganic filler content on the radiopacity of dental resin cements

“…For the fiber post, the radiopaque property allows its visualization and identification on X-ray films against the surrounding tooth structure and core material 8,11) , and hence the implied importance of radiopacity for core build-up materials too. For the adhesive resin cement used to cement the post in the root canal, the radiopaque property allows clinicians to use X-ray images to determine the quality of the restoration, absence/ presence of voids, adaptation of post to the root canal walls, and structural integrity of the post-core foundation.…”

“…Endodontically treated teeth are more susceptible to fractures than unrestored vital teeth. Several factors compromise the strength of these restored teeth: loss of hard tooth tissue after access cavity preparation, dehydration of dentin after chemomechanical preparation, and excessive pressure during obturation 11) . If 50% of coronal tooth structure is lost as a result of endodontic treatment, it might be necessary to insert a post in the root canal to retain the core.…”

“…Fiber-reinforced resin posts, cemented in the root canal using adhesive resin cements, are used extensively to restore endodontically treated teeth 11) . For the fiber post, the radiopaque property allows its visualization and identification on X-ray films against the surrounding tooth structure and core material 8,11) , and hence the implied importance of radiopacity for core build-up materials too.…”

Un approccio critico alle tecniche di otturazione canalare

“…Inoltre essa può essere causa di numerose complicazioni che comprendono la frattura all'interno del canale degli spingipasta utilizzati per l'inserimento del sealer, l'estrusione di materiale oltre apice aggravata dal coinvolgimento di strutture anatomicamente rilevanti (seno mascellare, forame mentoniero). Sarebbe infine significativo, con questa metodica, il rischio di flareup post-operatori 9 .…”