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Órgano Ofical de la Facultad de Estomatología de la Benemérita Universidad Autónoma de Puebla

2015, Number 52

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Oral 2015; 16 (52)

ln-vitro comparative study of compressive strength of four resin core materials

Moreno BS, García DA, Kogan FE, Gutiérrez VDH

Language: Spanish
References: 19
Page: 1270-1273
PDF size: 2050.14 Kb.


ABSTRACT

lntroduction. In prosthetic renabilitation after a endodontic treatment it moy be requi red a i ntraradicu lar post and subsequent reconstruction of lne core, now o days tne material of cnoice is composite. lnnovative core moleríais exist and there is very few studies thot compare there resistant la compression. Objective. Compore tne resistance lo vertical compression of four resi nous moleríais for core buildups. Methods. Ar1 ln-Vitro experimental study was held in 40 standordized metal cubas with o central hale for cementation of a fiber post of 1 Omm length and 1 mm exposed lo the surface were preparad. Around !he post using plostic cylinders guides of 3mm dio meter and 2mm heightwere filiad with the resinous material fortne core buildups Sonicfiii-Kerr, Paracore-Coltene, Biscore-Bisco and Herculite Ultro-Kerr (1 O per group). Tne compressive strengtn wos meosured with the lnstron machina. χ2 anolysis between the type of material ond the presence of fracture was perfarmed and lo campo re the compressive strengtn in Newtons Kruskai-Wallis was used. Results: Half of Biscore's and Sonicfill's samples were defonmed and without fradure, with ParaCore there wos one sample with deformalían and Herculite Uhra all somples were froctured, observing significant differences (p‹0.05). To compare lne compressive strength between groups, the samples that were no! fracturad were excluded from tne analysis. When com paring tne median of resistance among lne study groups statistically significo nt differences (p ‹0.05) wnere showed and in Sonicfill higher compressive strengtn was found. Condusions. Sonicfill and Biscore hod the most samples with deformation witnout fracturing. Sonicfill recordad nigher fradurevalues being the material witn highercompressive strength


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