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Comparison of fracture resistance in post restorations in primary maxillary incisors
Pubblication date: 09/2014
Authors: A. Baghalian*, M. Ranjpour*, T. Hooshmand**, N. G.Herman***, A. Ebrahimi*
Institution: * Department of Pediatric Dentistry, School of Dentistry,
Qazvin University of Medical Sciences
** Department of Dental Biomaterials, School of Dentistry,
Tehran University of Medical Sciences, Tehran, Iran
***New York University College of Dentistry, New York, USA
Publication: European Journal of Paediatic Dentistry
Title: Comparison of fracture resistance in post restorations in primary maxillary incisors
Abstract: Aim This in vitro study aimed to test the fracture resistance of 4 different posts used in the restoration of severely decayed primary incisors.
Materials and methods Fifty primary incisors were selected for this study and sectioned 1 mm above the CEJ. After filing and irrigation of the root canal space, the canals were obturated with Metapex and 3 mm of post space was prepared inside the canals. Intact glass fiber posts, split-ended glass fiber posts, composite resin posts, and orthodontic γ “gamma” wire posts were used as intracanal posts and the final composite resin restoration was placed using a paediatric strip crown. After thermocycling of the specimens, the fracture resistance was measured using a universal testing machine.
Results The mean fracture resistance of split-ended glass fiber posts was higher than the other groups, however, there was no significant difference between any of the groups (P>0.05).
Conclusion Split-ended glass fiber posts seem to be a more appropriate option for full coverage restorations in primary incisors.