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- Title
ANÁLISE DO PADRÃO DE FRATURAS EM PINOS ANATOMIZADOS CIMENTADOS COM DIFERENTES AGENTES CIMENTANTES.
- Authors
Madeira Barbosa, Raísa Cristina; Barros Souza, Nielsen; de Fátima Vasconcelos Pereira, Adriana; Pinheiro Rodrigues, Vandílson; Lima Santana, Ivone
- Abstract
The breaking pattern in teeth with glass fiber pins (GFP), anatomized and fixed with different cementing agents, is analyzed in vitro. Thirty bovine mandibular uni-radicular teeth were used. Roots were treated endodontically and randomly divided into two groups according to the cementing agent employed, or rather, G1: auto-adhesive resinous cement (RelyX U200-3M ESPE), and G2: conventional resinous cement (Allcem-FGM). After the anatomization and cementation of pins, the specimens were stored in a buffer at 37°C for 7 days. Roots were then cut under flowing water and six 1mm-thick slices were cut, totaling 180 specimens. The push-out test was performed for all specimens and then placed under a light microscope to assess the type of fracture. The most frequent type of fracture for the two groups comprised coesine in dentin (G1 = 32.2%; G2 = 30%). There was a statistically greater frequency in adhesive failures between dentin and cement in G2 (p=0.007), with a statistically higher frequency (p=0.027) of cohesive fracture in dentin in the third cervical (38.3%) when compared to the third apical (20.0%). Results suggest that auto-adhesive cement (RelyX U200-3M ESPE) had more positive results in the analysis of fracture patterns.
- Publication
Iniciação Científica Cesumar, 2017, Vol 19, Issue 2, p145
- ISSN
1518-1243
- Publication type
Article
- DOI
10.17765/1518-1243.2017v19n2p145-151