The fracture behavior of premolar teeth with class II cavities restored by both direct composite restorations and endodontic post systems

Journal of Dentistry
F P NothdurftP R Pospiech

Abstract

The aim of the study was to evaluate the influence of different posts on the fracture load and fracture mode of endodontically treated premolars with class II cavities and direct composite restorations in an ex vivo setting. Forty-eight single-rooted human premolars were endodontically treated and prepared with standardized MO (mesio-occlusal) cavities. Eight teeth each received either no posts or were restored with titanium screws (BKS), glass fiber posts (DentinPost), or quartz fiber posts (DT Light SL). Sixteen teeth were restored with zirconium dioxide posts (CeraPost). BKS-screws and eight zirconium dioxide posts were cemented conventionally with glass ionomer cement; Panavia F resin cement was used for all others. The specimens were restored with direct composite restorations. Eight sound premolars served as the controls. After thermomechanical fatigue testing, the samples were loaded until fracture occurred at an angle of 45 degrees . All specimens were evaluated for fracture lines. The sound teeth showed the significant highest fracture load (792.50+/-210.01 N). The group restored with quartz fiber posts differed not significantly from the control. In the groups with fiber posts and titanium screws significant higher fr...Continue Reading

References

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Citations

May 15, 2010·Dental Materials Journal·Zeynep OzkurtEnder Kazazoğlu
May 2, 2012·Journal of Dentistry·M B CorreaF F Demarco
Aug 24, 2010·Journal of Endodontics·Mahmoud Khaled Al-OmiriOsama Abu-Hammad
Mar 19, 2016·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Mohammad D Al AmriHatem Al Qarni
May 27, 2011·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Yongfu HouZhimin Zhu
Jan 12, 2013·Brazilian Dental Journal·Gisele Rodrigues da SilvaCarlos José Soares
Jun 11, 2011·International Endodontic Journal·M BalkenholM Hannig
Oct 8, 2018·Clinical Oral Investigations·Nihan GönülolTuğba Misilli
Dec 24, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Márk FráterSufyan Garoushi
Apr 2, 2021·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Carulina Bueno de MesquitaTiago André Fontoura de Melo

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