Effect of Ferrule and Cement Type on Fracture Strength of Post Core Crowned Teeth

Asadzadeh Aghadaee, Nafiseh and Goharian, Reza and Asadollahi, Amin (2008) Effect of Ferrule and Cement Type on Fracture Strength of Post Core Crowned Teeth. Journal of Mashhad Dental School, 32 (3). pp. 183-188.

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Introduction: One of the most common methods for reconstruction of endodontic teeth is post core crown. There are many factors affecting the fracture resistance of the teeth; such as, ferrule and the type of cement used as the luting agent. The purpose of this in vitro study was to investigate if the resin cement used was able to improve the fracture resistance of teeth restored with cast post core crowns. Materials & Methods: In this experimental in vitro study, 40 intact second mandibular premolars were endodontically treated after their crowns were removed so that the remained root parts were 15mm. The teeth were divided into four groups of ten teeth each. Groups 1 and 2 had ferrule while groups 3 and 4 were non-ferrule groups. The posts of groups 1 and 2 were cemented with Glass Ionomer cement, while the posts of other groups were cemented with resin cement. Then the crowns were made in the same shape in which we could apply the compressive load with 1mm/min speed at an angle of 45 degrees on the buccal cusp tip to induce fracture. ANOVA and t test were used for statistical analyses. Results: In ferrule group cemented with Glass-Ionomer, the mean fracture strength was greater than non-ferruled group cemented with Glass-Ionomer. There was no statistical difference between the ferrule group cemented with resin cement, compared with and non ferruled groups. Conclusion: In teeth post cemented with resin, cervical ferrule does not increase the fracture strength of the teeth significantly.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 23 Sep 2017 18:24
Last Modified: 23 Sep 2017 18:24
URI: http://eprints.mums.ac.ir/id/eprint/3075

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