55 Journal of Scientific and Innovative Research 2017; 6(2): 55-58 Available online at: www.jsirjournal.com Research Article ISSN 2320-4818 JSIR 2017; 6(2): 55-58 © 2017, All rights reserved Received: 05-05-2017 Accepted: 27-05-2017 Dr. Asiya Shaikh 2nd Year Post Graduate Student, Department of Conservative Dentistry and Endodontics, M.A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra- 411001, India Dr. Vivek Hegde Professor and HOD, Department of Conservative Dentistry and Endodontics, M.A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra- 411001, India Dr. Srilatha Shanmugasundaram Associate Professor, Department of Conservative Dentistry and Endodontics, M.A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra- 411001, India Dr. Vighnesh Dixit Associate Professor, Department of Conservative Dentistry and Endodontics, M.A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra- 411001, India Correspondence: Dr. Asiya Shaikh 2nd Year Post Graduate Student, Department of Conservative Dentistry and Endodontics, M.A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra- 411001, India A novel approach to construction and working of fluid filtration model: An experimental study Asiya Shaikh*, Vivek Hegde, Srilatha Shanmugasundaram, Vighnesh Dixit Abstract Aim: The aim of the study was to construct a novel fluid filtration model and analyse the working of the model for the quantitative evaluation of microleakage. Materials and Methods: An oxygen cylinder equipped with pressure adjusting device was connected to a pressurised buffer system, which was then connected to micropipette and a three-way control faucet, the faucet holds attachment for syringe at the upper portion and the tooth sample at the lower part. A tooth sample with perforation condensed with Gutta percha and without perforation was connected to the fluid filtration model, to ensure bubble displacement a bubble was introduced in micropipette. A digital SLR camera was used to record the bubble displacement, AutoCAD Software for the measurement and custom made software for calculation of microleakage. Results: The model was constructed and functioned successfully. Conclusion: This model can be used for the evaluation of microleakage of dental materials. Keywords: Novel fluid filtration, Working of fluid filtration, Software based analytical study. INTRODUCTION The most desirable property of any restorative material is that it should have a complete and long lasting seal at the margins that prevents any fluid movement thereby making an entry of microorganisms beneath the restoration. The tooth restoration interface is an area of clinical concern and critical as far as microleakage is concerned. A microscopic space always exists between the tooth restoration interface leading to passage that allows the percolation of oral fluids and microorganism’s thus causing mi croleakage that may jeopardize the clinical longevity of restoration [1-4] . Clinically, microleakage results into postoperative sensitivity, secondary caries, pulpal pathology and marginal staining [5] . Marginal staining will further cause marginal breakdown, consequently allowing the penetration of microorganisms, multiplication of these organisms and subsequently diffusion of the microorganisms and their toxic products into the dentinal tubules causing pulpal inflammation. Despite of advances in various restorative materials ,placement techniques and curing strategies microleakage still exists causing restorative failure, further emphasising that measuring microleakage is an important aspect. There are various methods to measure microleakage including chemical, bacterial and radioactive tracers, dye penetration, dye extraction, electrochemical, neutron activation, micro-computed tomography, however they present inherent drawbacks [6] . The fluid filtration method developed by Pashley et al has been widely used to measure microleakage [1] . This method has several advantages over the commonly used methods: the samples are not destroyed, permits the evaluation of microleakage over time, operators bias and most importantly the results are accurate since very small volume is recorded [1-4] . The purpose of this study was to construct and analyse the working of the novel fluid filtration system and assist the researchers to construct a simpler and more feasible model to study micro leakage.