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ORIGINAL ARTICLE
Year : 2016  |  Volume : 6  |  Issue : 2  |  Page : 91-94

Comparative Evaluation of Flexural Strength of Heat Polymerised Denture Base Resins after Reinforcement with Glass Fibres and Nylon Fibres: An In vitro Study


1 Department of Dentistry, S.P. Medical College and Hospital, Bikaner, Rajasthan, India
2 Primary Health Centre, Swaroopganj, Sirohi, Rajasthan, India
3 Department of Dentistry, Government Dental College and Hospital, Shimla, Himachal Pradesh, India
4 Department of Oral Medicine and Radiology, Government Dental College and Hospital, Chennai, Tamil Nadu, India

Correspondence Address:
Kusum Singh
Department of Dentistry, S.P. Medical College and Hospital, Bikaner, Rajasthan
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2321-8568.190315

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Aim: This study was an in vitro study done to evaluate and compare the flexural strength (FS) of heat polymerised polymethyl methacrylate (PMMA) denture base resins after reinforcement with nylon fibres and different concentration of glass fibres (GFs). Materials and Methods: Fifty heat-cured PMMA resin samples were fabricated using a die and divided into five groups, having ten samples in each group. All the samples were tested on universal testing machine and three point bending test was done. Then, FS of each sample was calculated. Mean value of FS of each group was used for statistical analysis. One-way analysis of variance test was used for statistical analysis. Results: Results showed that the fibres significantly affected the FS of PMMA. FS increases to the maximum with 5% GFs as compared to 2% glass, 2% nylon and 10% GFs. Conclusion: Polymers used in denture base fabrication, reinforced with GFs have shown to have a positive effect on the fracture resistance of dentures as compared to unreinforced PMMA.


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