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ORIGINAL ARTICLE
Year : 2019  |  Volume : 9  |  Issue : 2  |  Page : 144-151

Comparison of the effect for fracture resistance of different coronally extended post length with two different post materials


1 Department of Prosthodontics, MA Rangoonwala Dental College and Research Center, Pune, Maharashtra, India
2 Department of Dentistry, Ingham Institute Applied Medical Research, Western Sydney University, South Western Sydney Local Health District, Sydney, Australia
3 Index Institute of Dental Science, Indore, Madhya Pradesh, India
4 Department of Conservative and Endodontics, R R Dental College, Udaipur, Rajasthan, India
5 Department of Endodontics, Faculty of Dentistry, Melaka Manipal Medical College, Melaka, Malaysia
6 BDS, MPH, Grand Valley State University, Allendale, Michigan, USA

Correspondence Address:
Dr. Niharika Singh Chauhan
Department of Prosthodontics, MA Rangoonwala Dental College and Research Center, Pune, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jispcd.JISPCD_334_18

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Aims and Objectives: To compare the effect for fracture resistance of different coronally extended post length with two different post materials. Materials and Methods: One hundred and sixty endodontically treated maxillary central incisors embedded in acrylic resin with decoronated root portion were taken for the study. The postspaces were prepared according to standard protocol. The samples were divided into two groups according to the post material: glass-fiber post and Quartz fiber post. These groups were further subdivided on the basis of coronal extension of 4 and 6 mm for glass fiber and Quartz fiber posts, respectively. The posts were then luted with dual-polymerizing resin cement followed by core buildup. Samples were subjected to increasing compressive oblique load until fracture occurred in a universal testing machine. Data were analyzed with one-way ANOVA and independent Student's t-test. Analysis was done using SPSS version 15 (SPSS Inc., Chicago, IL, USA) Windows software program. Results: Glass fiber post with coronal extension of 4 mm (182.8 N) showed better results than with 6-mm length (124.1 N). Similarly, in quartz fiber posts group, 4-mm postlength (314 N) was better when compared with 6 mm (160 N). The 4-mm coronal extension of quartz fiber post displayed superior fracture resistance. Conclusions: Glass fiber posts showed better fracture resistance than Quartz fiber posts. 4-mm coronal length showed more fracture resistance than 6 mm.


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