Comparison of the Effect for Fracture Resistance of Different Coronally Extended Post Length with Two Different Post Materials.

Autor:	Chauhan NS; Department of Prosthodontics, MA Rangoonwala Dental College and Research Center, Pune, Maharashtra, India., Saraswat N; Department of Dentistry, Ingham Institute Applied Medical Research, Western Sydney University, South Western Sydney Local Health District, Sydney, Australia., Parashar A; Index Institute of Dental Science, Indore, Madhya Pradesh, India., Sandu KS; Department of Conservative and Endodontics, R R Dental College, Udaipur, Rajasthan, India., Jhajharia K; Department of Endodontics, Faculty of Dentistry, Melaka Manipal Medical College, Melaka, Malaysia., Rabadiya N; BDS, MPH, Grand Valley State University, Allendale, Michigan, USA.
Jazyk:	angličtina
Zdroj:	Journal of International Society of Preventive & Community Dentistry [J Int Soc Prev Community Dent] 2019 Mar-Apr; Vol. 9 (2), pp. 144-151. Date of Electronic Publication: 2019 Apr 12.
DOI:	10.4103/jispcd.JISPCD_334_18
Abstrakt:	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. Competing Interests: There are no conflicts of interest.
Databáze:	MEDLINE
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