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. 2016 May-Jun;19(3):270-3.
doi: 10.4103/0972-0707.181946.

Fracture resistance of endodontically treated single rooted premolars restored with Sharonlay: An in vitro study

S M Sharath Chandra  1 , Nishtha Agrawal  1 , I Sujatha  1 , K Sivaji  1
Affiliations

Fracture resistance of endodontically treated single rooted premolars restored with Sharonlay: An in vitro study

S M Sharath Chandra et al. J Conserv Dent. 2016 May-Jun.

Abstract

Aims: The aim of this study is to compare in vitro the fracture resistance of the endodontically treated tooth restored with a novel design Sharonlay, with the two component restorative method, i.e., post with separate onlay, and onlay without post.

Subjects and methods: 45 single-rooted mandibular second premolars were taken, and root canal treatment was performed. Teeth were then randomly divided into three groups (n = 15) based on the type of restoration given: Group I - metal onlay with cast post extension (Sharonlay), Group II - metal onlay with prefabricated metal post (Mani post system), Group III - metal onlay over endodontically treated tooth obturated with Gutta-percha (control group). Fracture resistance was checked using the Instron universal testing machine and the fracture patterns were analyzed.

Results: According to the values recorded, Group I showed maximum mean fracture resistance followed by Groups II and III. Statistically significant difference was found between Groups I and II and Groups I and III and statistically significant difference was found between Groups II and III.

Conclusion: A single unit component Sharonlay, gives higher fracture resistance to a premolar as compared to (a) metal onlay with prefabricated metal post and (b) metal onlay over endodontically treated tooth.

Keywords: Fracture resistance; Sharonlay; single-rooted premolars.

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Figures

Graph 1
Graph 1
Mean fracture resistance in the three groups
See this image and copyright information in PMC

References

    1. Grandini S. Ph.D Thesis Submitted to University of Siena, School of Dental Medicine, Italy. 2004. Basic and Clinical Aspects of Selection and Application of Fiber Posts.
    1. Reeh ES, Messer HH, Douglas WH. Reduction in tooth stiffness as a result of endodontic and restorative procedures. J Endod. 1989;15:512–6. - PubMed
    1. Sedgley CM, Messer HH. Are endodontically treated teeth more brittle? J Endod. 1992;18:332–5. - PubMed
    1. Balkenhol M, Wöstmann B, Rein C, Ferger P. Survival time of cast post and cores: A 10-year retrospective study. J Dent. 2007;35:50–8. - PubMed
    1. Heling I, Gorfil C, Slutzky H, Kopolovic K, Zalkind M, Slutzky-Goldberg I. Endodontic failure caused by inadequate restorative procedures: Review and treatment recommendations. J Prosthet Dent. 2002;87:674–8. - PubMed