A Baghalian1, M Ranjpour1, T Hooshmand2, N G Herman3, A Ebrahimi1. 1. Department of Pediatric Dentistry, School of Dentistry, Qazvin University of Medical Sciences. 2. Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. 3. New York University College of Dentistry, New York, USA.
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.
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.