Research Article
Volume 19 Issue 3 - 2020
A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth Restored with Two Different Post and Core Systems and Two Different Luting Agents - An In vitro Study
Neena Chandran*
Century International Institute of Dental Science, Kerala, India
*Corresponding Author: Neena Chandran, Century International Institute of Dental Science, Kerala, India.
Received: December 24, 2019; Published: February 21, 2020


Introduction: The longevity of endodontically treated tooth has been greatly improved by continuing developments made in endodontic and restorative procedures. One of such developments is prefabricated post and core. 

Purpose: To compare fracture resistance and primary mode of failure of endodontically treated teeth with two different posts systems and two variant luting agents. 

Materials and Methods: Endodontic treatment was performed on 30 maxillary incisors with proper protocol. The samples were allocated into 3 groups. For two experimental groups post space preparation was done and teeth were restored with prefabricated glass fibre post (EverStick post) with composite core (Group B) and prefabricated zirconia posts with composite core (Group C). Samples with intact coronal structure were selected as control group (Group A). In all samples post space preparation was done. Two type of luting cements dual cure resin cement (Luxacore Z) and glass ionomer cement (Fuji I, GC) was used for post cementation. The standardization of core was fixed to 4mm × 5mm. Prepared samples were subjected to compressive load of 0.5 mm/min at 135º angulation. The load at which fracture occurred and fracture mode were analysed statistically by one way ANOVA, post-hoc tukey test and chi-square test. 

Results: The findings showed statistically significant difference between failure loads. The mean load required to fracture glass fibre was highest (711MPa) and least for control group (231MPa). The glass fibre posts and zirconia posts showed favorable fracture. 

Conclusion: The results concluded that, endodontically treated teeth without post core system showed least fracture resistance signifying need to reinforce tooth. Use of glass fibre post (everStick post) showed highest mean fracture resistance regardless of luting agent.

Keywords: Cast Post Core; Glass Fibre Post; Zirconia Post; Fracture Resistance


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Citation: Neena Chandran. “A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth Restored with Two Different Post and Core Systems and Two Different Luting Agents - An In vitro Study”. EC Dental Science 19.3 (2020): 01-07.

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