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An International Peer Reviewed Journal for Pharmaceutical, Medical & Biological Sciences

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 ISSN 2394-3211

Impact Factor: 6.222

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*Mohammad Raheem, Dr. Girija S. Sajjan, MDS, Dr. D. Praveen, MDS, Dr. Madhu Varma K., Dr. Nanda Kishore Kode and Dr. M. Srikrishnateja


The fracture resistance of post-endodontic restorations with prefabricated post depends on their ability to resist masticatory load. The double unit prefabricated post and core system involves, placement of rigid post and, core build-up with less rigid material. Concentration of high stress is observed in transitional area between a rigid and a less rigid material leading to failure. Recently a prefabricated post and core system with a single material is available. The study evaluated the fracture resistance and mode of failures of single and double unit post and core systems. Methods: Decoronation of 44 human extracted maxillary central incisors was done at a level 2mm incisal to cementoenamel junction. The samples were instrumented with rotary Pro Taper universal system. Sectional obturations were done and randomly divided into two groups. Group I: Double unit post and core. (D.T. Light- Post X-RO)(BISCO) Group II: Single unit post and core. (Edelweiss Post and Core system). The samples were subjected to constant load under a Universal testing machine. Data were subjected to Independent t test for Statistical analysis. The mode of failures of both post and core systems were evaluated under Stereomicroscope. Results: The Mean values of fracture resistance of Group I & II were 420.54 & 289.17 N, respectively. In Group I, 77% of the fractures were favourable. In Group II, 95% of the fractures were favourable. Conclusion: Both systems presented sufficient fracture resistance. D.T. Light group showed better performance compared to Edelweiss group. Edelweiss group showed more favourable fractures compared to D.T. Light post group.

Keywords: Edelweiss, Fracture Resistance, Postendodontic restoration, prefabricated post.

[Full Text Article]



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Google Scholar Indian Science Publications InfoBase Index (In Process) SOCOLAR, China Research Bible, Fuchu, Tokyo. JAPAN International Society for Research activity (ISRA) Scientific Indexing Services (SIS) Polish Scholarly Bibliography Global Impact Factor (GIF) (Under Process) Universal Impact Factor International Scientific Indexing (ISI), UAE Index Copernicus CAS (A Division of American Chemical Society) USA (Under Process) Directory of Open Access Journal (DOAJ, Sweden, in process) UDLedge Science Citation Index CiteFactor Directory Of Research Journal Indexing (DRJI) Indian citation Index (ICI) Journal Index (JI, Under Process) Directory of abstract indexing for Journals (DAIJ) Open Access Journals (Under Process) Impact Factor Services For International Journals (IFSIJ) Cosmos Impact Factor Jour Informatics (Under Process) Eurasian Scientific Journal Index (ESJI) International Innovative Journal Impact Factor (IIJIF) Science Library Index, Dubai, United Arab Emirates Pubmed Database [NLM ID: 101669306] (Under Process) IP Indexing (IP Value 2.40) Web of Science Group (Under Process) Directory of Research Journals Indexing Scholar Article Journal Index (SAJI) International Scientific Indexing ( ISI ) Scope Database