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Retention strength of ball-attachment titanium post for removable partial denture or overdenture
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Keywords

Air abrasion, dental
Cementation
Denture retention
Surface properties

How to Cite

1.
Melilli D, Wandscher VF, Ciocca L, Currò G, Parisi C, Gallina G, et al. Retention strength of ball-attachment titanium post for removable partial denture or overdenture. Braz. J. Oral Sci. [Internet]. 2020 Nov. 4 [cited 2024 Nov. 13];19:e208798. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8658798

Abstract

Aim: To evaluate the retention of an endodontic titanium postwith a spherical head for removable partial denture or overdentureattachment according to surface treatment type. Methods: Sixtyhealthy single-rooted teeth, sectioned at the enamel/cementumjunction, were treated endodontically and steadily fixed in theembedding acrylic resin. The titanium posts were subdivided intofour groups: control, no surface treatment (Ctrl); posts with macroretentivegrooves (MR); air abrasion of the post surface (AB); andposts with macro-retentive grooves and air abrasion of the postsurface (MR+AB). The posts were luted in the root canal usingself-adhesive dual resin cement. Pull-out testing was performedusing a universal testing machine until complete detachment wasachieved. After pull-out testing, the metallic posts were examinedunder an optical microscope and the failures were classifiedbased on the cement distribution pattern on the extracted posts:0, no cement left on the post (cement/post failure); 1, postsurface partially covered by adhered cement (post/cement anddentin/cement mixed failure); 2, post surface completely coveredby cement (dentin/cement failure). The retention data wereanalyzed by one-way ANOVA, Bonferroni–Dunn test (p<0.05)and Weibull analysis. Results: AB showed the highest retentionvalue (485.37±68.36), followed by MR+AB (355.80±118.47), MR(224.63±42.54) and Ctrl (113.12 ± 51.32). AB and MR showedthe highest Weibull moduli. Conclusions: The data indicatedthat air abrasion alone could significantly increase the retentionof titanium posts/attachments for use with overdentures orremovable partial denture.

https://doi.org/10.20396/bjos.v19i0.8658798
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