AIM To investigate the adaptation of new generation fiber post compared with prefabricated glass fiber postsMATERIAL AND METHODS The experiment was performed by two experienced clinicians, the former performed endodontic therapies and the latter post restorations. The clinical crowns of twenty human extracted teeth were sectioned at the cemento-enamel junction. The canals were shaped with MTwo NiTi rotary files up to 25 .07. Root canals were filled with guttapercha points with vertical condensation technique up to 5 mm to the apex. The middle and coronal part of the canal were cleaned with GG burs 1-4, used with very light touch. Adhesion technique, using 4th generation adhesives was performed. With a random number generator, at this point the roots were divided into two groups, 10 teeth each, A and B; group A was restored with a prefabricated fiber post, group B with a new generation Ever-stick post, made of preimpregnated fibers that can be packed into the canal. Both types of posts were cemented with flowable auto-photo composite, which was allowed to set for 15 minutes.The roots were then sectioned 3 mm from the coronal end with a rotating disk, polished and photographed with a camera on a fixed mount. The images were processed with software that allowed to measure the cement thickness from fibers to dentin, with 8 measures for each specimen. The numeric data were processed with a statistical program in order to evaluate differences between groups and its significance (quantitative analysis).Qualitative analysis was performed by two experienced independent observers, the accordance of whom was evaluated with Cohen K test, that gave to each specimen a score 0-3, accordingly to the presence or absence of defects, such as voids in the material or lack of adherence to dentinal walls. Kruskal-Wallis and Mann-Whitney tests were used to identify differences in the groups.RESULTS New generation fiber posts are a valuable alternative to preformed fiber posts.
Caries prevention about inorganic fluoride: a SEM investigation / Chelariu, C; Giannetti, Luca; Milia, E; Gallottini, L.. - In: GIORNALE ITALIANO DI CONSERVATIVA. - ISSN 1724-2908. - STAMPA. - Supplemento vol. IV – n°1, gennaio-marzo 2006:(2006), pp. 187-187.
Caries prevention about inorganic fluoride: a SEM investigation.
GIANNETTI, Luca;
2006
Abstract
AIM To investigate the adaptation of new generation fiber post compared with prefabricated glass fiber postsMATERIAL AND METHODS The experiment was performed by two experienced clinicians, the former performed endodontic therapies and the latter post restorations. The clinical crowns of twenty human extracted teeth were sectioned at the cemento-enamel junction. The canals were shaped with MTwo NiTi rotary files up to 25 .07. Root canals were filled with guttapercha points with vertical condensation technique up to 5 mm to the apex. The middle and coronal part of the canal were cleaned with GG burs 1-4, used with very light touch. Adhesion technique, using 4th generation adhesives was performed. With a random number generator, at this point the roots were divided into two groups, 10 teeth each, A and B; group A was restored with a prefabricated fiber post, group B with a new generation Ever-stick post, made of preimpregnated fibers that can be packed into the canal. Both types of posts were cemented with flowable auto-photo composite, which was allowed to set for 15 minutes.The roots were then sectioned 3 mm from the coronal end with a rotating disk, polished and photographed with a camera on a fixed mount. The images were processed with software that allowed to measure the cement thickness from fibers to dentin, with 8 measures for each specimen. The numeric data were processed with a statistical program in order to evaluate differences between groups and its significance (quantitative analysis).Qualitative analysis was performed by two experienced independent observers, the accordance of whom was evaluated with Cohen K test, that gave to each specimen a score 0-3, accordingly to the presence or absence of defects, such as voids in the material or lack of adherence to dentinal walls. Kruskal-Wallis and Mann-Whitney tests were used to identify differences in the groups.RESULTS New generation fiber posts are a valuable alternative to preformed fiber posts.
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