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Influence of post pattern and resin cement curing mode on the retention of glass fibre posts
Author(s) -
Poskus L. T.,
Sgura R.,
Paragó F. E. M.,
Silva E. M.,
Guimarães J. G. A.
Publication year - 2010
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.2009.01681.x
Subject(s) - materials science , crosshead , composite material , curing (chemistry) , glass fiber , cement , composite number , surface roughness
Poskus LT, Sgura R, Paragó FEM, Silva EM, Guimarães JGA. Influence of post pattern and resin cement curing mode on the retention of glass fibre posts. International Endodontic Journal , 43 , 306–311, 2010. Abstract Aim To evaluate the influence of post design and roughness and cement system (dual‐ or self‐cured) on the retention of glass fibre posts. Methodology Two tapered and smooth posts (Exacto Cônico No. 2 and White Post No. 1) and two parallel‐sided and serrated posts (Fibrekor 1.25 mm and Reforpost No. 2) were adhesively luted with two different resin cements – a dual‐cured (Rely‐X ARC) and a self‐cured (Cement Post) – in 40 single‐rooted teeth. The teeth were divided into eight experimental groups ( n = 5): PFD – Parallel‐serrated‐Fibrekor/dual‐cured; PRD – Parallel‐serrated‐Reforpost/dual‐cured; TED – Tapered‐smooth‐Exacto Cônico/dual‐cured; TWD – Tapered‐smooth‐White Post/dual‐cured; PFS – Parallel‐serrated‐Fibrekor/self‐cured; PRS – Parallel‐serrated‐Reforpost/self‐cured; TES – Tapered‐smooth‐Exacto Cônico/self‐cured; TWS – Tapered‐smooth‐White Post/self‐cured. The specimens were submitted to a pull‐out test at a crosshead speed of 0.5 mm min −1 . Data were analysed using analysis of variance and Bonferroni’s multiple comparison test (α = 0.05). Results Pull‐out results (MPa) were: PFD = 8.13 (±1.71); PRD = 8.30 (±0.46); TED = 8.68 (±1.71); TWD = 9.35 (±1.99); PFS = 8.54 (±2.23); PRS = 7.09 (±1.96); TES = 8.27 (±3.92); TWS = 7.57 (±2.35). No statistical significant difference was detected for posts and cement factors and their interaction. Conclusions The retention of glass fibre posts was not affected by post design or surface roughness nor by resin cement‐curing mode. These results imply that the choice for serrated posts and self‐cured cements is not related to an improvement in retention.