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Ruheyza Shwan Shahswar
Sazan Sherdil Saleem


PFS, compressive strength, stress, FEM, SPSS


 This research presents an experimental and theoretical investigation of compressive strength and stress distribution of three different types of pit and fissure sealants (PFS). The PFS had been divided into three major categories, i.e. resin-modified glass-ionomer (RMGI), resin-based PFS, and compomer Sealant, for each given type, commercial brands photac fil quick aplicap (3M ESPE), ultraseal XT hydro (Ultradent), and compoglass F (Ivoclar Vivadent) have been selected, respectively. Thirty samples, which were divided into three groups (ten specimens for each PFS type) were loaded in compression until failure. The SPSS (Statistical Package for the Social Science) version 23 program was used to perform the statistical analysis and assess the difference between the compressive strength of each study group.

The results of the experiment showed that the compressive strength of the resin-based PFS overcomes the RMGI and compomer sealant by 116% and 30% respectively. By using ABAQUS program performed the 3D finite element model (consisting 13050 elements and 14508 nodes) to evaluate the effect of chemical composition on the compressive strength of the PFS and compared stresses with the experimental results. The results of the analysis of these two methods showed that the vertical stress values differ even by 100% at stress concentration zones. This research showed that the filler fraction and particle size and uniformity of the filler distribution are the main determining factor affecting the compressive strength of PFS.

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Aratani, M., Pereira, A.C., Correr-Sobrinho, L., Sinhoreti, M.A.C., Consani, S., 2005. Compressive strength of resin-modified glass ionomer restorative material: effect of P/L ratio and storage time. J. Appl. Oral Sci. 13, 356–359.
Babu, G., Mallikarjun, S., Wilson, B., Premkumar, C., 2014. Pit and fissure sealants in pediatric dentistry. SRM J. Res. Dent. Sci. 5, 253.
Bayne, S.C., Thompson, J.Y., Swift Jr, E.J., Stamatiades, P., Wilkerson, M., 1998. A characterization of first-generation flowable composites. J. Am. Dent. Assoc. 129, 567–577.
Beauchamp, J., Caufield, P.W., Crall, J.J., Donly, K., Feigal, R., Gooch, B., Ismail, A., Kohn, W., Siegal, M., Simonsen, R., 2008. Evidence-based clinical recommendations for the use of pit-and-fissure sealants: a report of the American Dental Association Council on Scientific Affairs. J. Am. Dent. Assoc. 139, 257–268.
Beun, S., Bailly, C., Devaux, J., Leloup, G., 2012. Physical, mechanical and rheological characterization of resin-based pit and fissure sealants compared to flowable resin composites. Dent. Mater. 28, 349–359.
Beun, S., Bailly, C., Devaux, J., Leloup, G., 2008. Rheological properties of flowable resin composites and pit and fissure sealants. Dent. Mater. 24, 548–555.
Cattani-Lorente, M.A., Dupuis, V., Moya, F., Payan, J., Meyer, J.-M., 1999. Comparative study of the physical properties of a polyacid-modified composite resin and a resin-modified glass ionomer cement. Dent. Mater. 15, 21–32.
Cildir, S.K., Sandalli, N., 2007a. Compressive strength, surface roughness, fluoride release and recharge of four new fluoride-releasing fissure sealants. Dent. Mater. J. 26, 335–341.
Cildir, S.K., Sandalli, N., 2007b. Compressive strength, surface roughness, fluoride release and recharge of four new fluoride-releasing fissure sealants. Dent. Mater. J. 26, 335–341.
Cohen, L., Sheiham, A., 1988. The Use Of Pit And Fissure Sealants In The General-Dental-Service In Great-Britain And Northern-Ireland. Brit Dent J 165, 50–53.
Crisp, S., Lewis, B.G., Wilson, A.D., 1976. Characterization of glass-ionomer cements 1. Long term hardness and compressive strength. J. Dent. 4, 162–166.
El-Kalla, I.H., Garcia-Godoy, F., 1999. Mechanical properties of compomer restorative materials. Oper. Dent. 24, 2–8.
Feigal, R.J., 2002. The use of pit and fissure sealants. Pediatr. Dent. 24, 415–422.
Geiger, S.B., Gulayev, S., Weiss, E.I., 2000. Improving fissure sealant quality: mechanical preparation and filling level. J. Dent. 28, 407–412.
History and Evolution of Pit and Fissure Sealents [WWW Document], n.d. URL (accessed 5.11.18).
ISO 6874:2015 - Dentistry -- Polymer-based pit and fissure sealants [WWW Document], n.d. URL (accessed 5.12.18).
Lerech, S.B., Tarón, S.F., Dunoyer, A.T., Arrieta, J.M.B., Caballero, A.D., 2017. Compressive strength of glass ionomer and composite resin. In vitro study. Rev. Odontológica Mex. 21, e107–e111.
Meyer, J.-M., n.d. TEGDMA and Bisphenol-A: the same level of risk in dental medicine?
Meyer, J.M., Cattani-Lorente, M.A., Dupuis, V., 1998. Compomers: between glass-ionomer cements and composites. Biomaterials 19, 529–539.
Moezzyzadeh, M., 2012. Evaluation of the compressive strength of hybrid and nanocomposites. Shahid Beheshti Univ. Dent. J. 30, 23–28.
Munhoz, T., Nunes, U.T., Seabra, L.M.-A., Monte-Alto, R., 2016. Characterization of Mechanical Properties, Fluoride Release and Colour Stability of Dental Sealants. Pesqui. Bras. Em Odontopediatria E Clin. Integrada 16, 149–158.
Natali, A.N. (Ed.), 2003. Dental biomechanics. Taylor & Francis, London ; New York.
Nunn, J.H., Murray, J.J., Smallridge, J., 2000. British Society of Paediatric Dentistry: a policy document on fissure sealants in paediatric dentistry. Int. J. Paediatr. Dent. 10, 174–177.
Obici, A.C., Sinhoreti, M.A.C., Correr-Sobrinho, L., Góes, M.F. de, Consani, S., 2005. Evaluation of mechanical properties of Z250 composite resin light-cured by different methods. J. Appl. Oral Sci. 13, 393–398.
Ripa, L., 1993. Sealants revisted: an update of the effectiveness of pit-and-fissure sealants. Caries Res. 27, 77–82.
Singh, R.D., Chand, P., Jurel, S.K., Tripathi, S., 2011. Evaluation of Adhesive and Compressive Strength of Glass Ionomer Cements. J. Indian Prosthodont. Soc. 11, 210–214.
Subramaniam, P., Konde, S., Mandanna, D.K., 2008. Retention of a resin-based sealant and a glass ionomer used as a fissure sealant: a comparative clinical study. J. Indian Soc. Pedod. Prev. Dent. 26, 114.
Taher, N.M., 2001. Mechanical properties of flowable composites. situations 2, 6–7.
Uno, S., Finger, W.J., Fritz, U., 1996. Long-term mechanical characteristics of resin-modified glass ionomer restorative materials. Dent. Mater. 12, 64–69.
Walsh, R.M., Woodmansey, K.F., Glickman, G.N., He, J., 2014. Evaluation of compressive strength of hydraulic silicate-based root-end filling materials. J. Endod. 40, 969–972.
Xie, D., Brantley, W.A., Culbertson, B.M., Wang, G., 2000. Mechanical properties and microstructures of glass-ionomer cements. Dent. Mater. 16, 129–138.
Xu, X., Burgess, J.O., 2003. Compressive strength, fluoride release and recharge of fluoride-releasing materials. Biomaterials 24, 2451–2461.