Elhawary, A., Elkady, A., Kamar, A. (2016). COMPARISON OF DEGREE OF CONVERSION AND MICROLEAKAGE IN BULKFILL FLOWABLE COMPOSITE AND CONVENTIONAL FLOWABLE COMPOSITE(AN IN VITRO STUDY). Alexandria Dental Journal, 41(3), 336-343. doi: 10.21608/adjalexu.2016.58049
Alshaimaa A. Elhawary; Ahmed S. Elkady; Adel A. Kamar. "COMPARISON OF DEGREE OF CONVERSION AND MICROLEAKAGE IN BULKFILL FLOWABLE COMPOSITE AND CONVENTIONAL FLOWABLE COMPOSITE(AN IN VITRO STUDY)". Alexandria Dental Journal, 41, 3, 2016, 336-343. doi: 10.21608/adjalexu.2016.58049
Elhawary, A., Elkady, A., Kamar, A. (2016). 'COMPARISON OF DEGREE OF CONVERSION AND MICROLEAKAGE IN BULKFILL FLOWABLE COMPOSITE AND CONVENTIONAL FLOWABLE COMPOSITE(AN IN VITRO STUDY)', Alexandria Dental Journal, 41(3), pp. 336-343. doi: 10.21608/adjalexu.2016.58049
Elhawary, A., Elkady, A., Kamar, A. COMPARISON OF DEGREE OF CONVERSION AND MICROLEAKAGE IN BULKFILL FLOWABLE COMPOSITE AND CONVENTIONAL FLOWABLE COMPOSITE(AN IN VITRO STUDY). Alexandria Dental Journal, 2016; 41(3): 336-343. doi: 10.21608/adjalexu.2016.58049
COMPARISON OF DEGREE OF CONVERSION AND MICROLEAKAGE IN BULKFILL FLOWABLE COMPOSITE AND CONVENTIONAL FLOWABLE COMPOSITE(AN IN VITRO STUDY)
1Bachelor of Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
2- Professor of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
3Professor of Dental Biomaterials, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
Abstract
INTRODUCTION: Composite restorative materials represent one of the many successes of modern biomaterials research, since they replace biological tissue in both appearance and function. Several aspects during selection of composite restorative materials should be considered, among which are the degree of conversion and microleakage. OBJECTIVES: The objective of this study is to compare the degree of conversion and microleakage in bulkfill flowable and conventional flowable composite. MATERIALS AND METHODS: Bulk-fill flowable composites (SDR, Dentsply), (Filtek Bulkfill flowable, 3M ESPE) and conventional flowable composite (X-Flow, Dentsply), (Filtekz350xt flowable, 3M ESPE) were tested. 28 cylindrical specimens were prepared from each material in Teflon mold. Degree of conversion (DC) was determined using Fourier transform infrared spectroscopy (FTIR) test. 44 non-carious molars were selected and Class V cavities were made and filled with composite in bulk increment then immersed in a basic fuschine dye. Samples were sectioned in the center of the restoration and observed with a 40x stereomicroscope; extent of dye penetration was measured. Statistical analysis of the results was performed using ANOVA and Post Hoc for DC, Kruskall-Wallis and Mann Whitney test for microleakage. RESULTS: A statistically significant difference was recorded for the degree of conversion test between the groups with p (<0.001). Microleakage test showed no statistically significant difference between the four groups at occlusal margins with p=0.563, nor at the cervical margins with p=0.243. CONCLUSIONS: Within the limitations of the current study, it was concluded that the bulkfill flowable composite (SDR) had better DC in comparison to the other three flowable composites used in the study. It was also concluded that it had the best marginal seal in both occlusal and cervical margin among all the groups.
1- Scotti N, Comba A, Gambino A, Paolino DS, Alovisi M, Pasqualini D, et al. Microleakage at enamel and dentin margins with a bulk fills flowable resin. Eur J Dent 2014; 8: 1-8.
2- Abed YA, Sabry HA, Alrobeigy NA. Degree of conversion and surface hardness of bulkfill composite versus incremental fill composite. Tanta Dent J 2015; 12: 71-80.
3- Magro ED, Sinhoreti MAC, Correr LAB, Consani RLX, E.A. Sicoli, Mj Mendonca, et al. Effect of different modes of light modulation on the bond strength and knoop hardness of a dental composite. Braz Dent J 2008; 19: 334-40.
4- Kusgoz A, Ülker M, Yesilyurt C, Yoldas OH, Ozil M, Tanriver M. Silorane-based composite: depth of cure, surface hardness, degree of conversion and cervical microleakage in class II cauities. J Esthet Restor Dent 2011; 23: 324-35.
5- Yoshikawa T, Morigami M, Sadr A, Tagami J. Acceleration of curing of resin composite at the bottom surface using slow-start curing methods. Dent Mater 2013; 32: 999-1004.
6- Mousavinasab SM, Meyers I. Comparison of depth of cure, hardness and heat generation of LED and high intensity QTH light sources. Eur J Dent 2011; 5: 299-304.
7- Galvao MR, Caldas SG, Bagnato VS, Rastelli AN, Andrade MF. Evaluation of degree of conversion and hardness of dental composites photoactivated with different light guide tips. Eur J Dent 2013; 7: 86-93.
9- Sadeghi M, Lynch CD. The effect of flowable materials on the microleakage of Class II composite restorations that extend apical to the cemento-enamel junction. Oper Dent 2009; 34: 306-11.
10- Furness A, Tadros MY, Looney SW, Rueggeberg FA. Effect of bulk/incremental fill on internal gap formation of bulk-fill composites. J Dent 2014; 42: 439-49.
13- Chandra PV, Harikumar V, Ramkiran D, Krishna MJ, Gouda MV. Microleakage of class V resin composites using various self-etching adhesives: An in vitro study. J Contemp Dent Pract 2013; 14: 51-5.
14- Tarle Z, Meniga A, Šutalo J. Correlation Between Degree of Conversion and Light Transmission Through Resin Composite Samples. Acta Stomatol Croat 1995; 29: 9-14.
18- Filtek™ Bulk Fill Flowable Restorative. 3M. 2012. Available at: http://multimedia.3m.com/mws/media/792319O/filtek-bulk-fill-flowable-restorative.pdf.
19- Alshali RZ, Silikas N, Satterthwaite JD. Degree of conversion of bulk-fill compared to conventional flowable at two time intervals. Dent Mater 2013; 29: e213-7.
20- Araujo Fde O, Vieira LC, Monteiro Junior S. Influence of resin composite shade and location of the gingival margin on the microleakage of posterior restorations. Oper Dent 2006; 31: 556-61.
22- Küçükeşmen Ç, Sönmez H. Microleakage of class-v composite restorations with different bonding systems on fluorosed teeth. Eur J Dent 2008; 2: 48-58.
23- Kim RJ, Kim YJ, Choi NS, Lee IB. Polymerization shrinkage, modulus, and shrinkage stress related to tooth-restoration interfacial debonding in bulk-fill composites. J Dent 2015; 43: 430-9.
24- Lotfi N, Esmaeili B, Ahmadizenouz G, Bijani A, Khadem H. Gingival microleakage in class II composite restorations using different flowable composites as liner: an in vitro evaluation. Caspian J Dent Res 2015; 4: 10-6.
25- Sadeghi M. Influence of flowable materials on microleakage of nanofilled and hybrid Class II composite restorations with LED and QTH LCUs. Indian J Dent Res 2009; 20: 159-63.
26- Al–Nori AK. The early microleakage of a flowable composite in class v restorations. Al – Rafidain Dent J 2009; 9: 156-61.
27- Tarle Z, Marović D, Pandurić V. Contemporary concepts on composite materials. Med Sci 2012; 38: 23-38.
28- Jang JH, Park SH, Hwang IN. Polymerization shrinkage and depth of cure of bulk-fill resin composites and highly filled flowable resin. Oper Dent 2015; 40: 172-80.
29- Orłowski M, Tarczydło B, Chałas R. Evaluation of marginal integrity of four bulk-fill dental composite materials: in vitro study. Sci World J 2015; 2015: 701262.