Journal of Conservative Dentistry
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Year : 2018  |  Volume : 21  |  Issue : 6  |  Page : 613-617

Does ferrule thickness influence resistance to fracture of endodontically treated teeth?

Department of Restorative Dentistry, School of Dentistry, University of Pernambuco(FOP/UPE), Camaragibe, PE, Brazil

Correspondence Address:
Dr. Armiliana Soares Nascimento
Avenida General Newton Cavalcanti, 1650, Tabatinga, Camaragibe- PE, CEP: 58756-220
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JCD.JCD_204_16

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Background: Teeth with severe crown destruction and endodontically treated may or may not present a circular strip of dental tissue located in the cervical region called ferrule. Aims: The aims of this study were to evaluate ferrule thickness influence on endodontically treated teeth (ETT) resistance to fracture. Materials and Methods: A total of 30 bovine incisor teeth were selected, endodontically treated and randomly distributed, according to the ferrule thickness: G1- no ferrule, G2 – 1 mm, and G3 – 2 mm. All the teeth were restored with prefabricated posts and composite resin. Resistance to fracture was established as the compression strength at 45° tilt at the lingual surface of the crown. Statistical Analysis Used: Data were analyzed using ANOVA and Tukey's test. Results: Resistance to fracture of G1 and G2 were significantly higher than that of G3 (P < 0.001). The pattern of fracture, common to all groups, occurred at the composite resin on the coronary portions. Conclusion: Ferrule thickness can influence the resistance to fracture of ETT.

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