Aim: The aim of the study was to evaluate and compare the shear bond strength of conventional composites with nanocomposites in carious and sound deciduous dentin with the use of self-etching adhesive.
Methodology: Human primary molars were ground to obtain flat dentin surfaces and divided into two groups: Carious dentin and sound dentin group. The carious teeth specimens were prepared by removing infected dentin and area with affected dentin was used for bonding composite. Teeth with carious and sound dentin were subdivided in two groups (n = 15) based on the type of the composite into conventional composite group and nanocomposite group. The composite was bonded to the teeth with self-etching adhesive. All the bonded specimens were stored in distilled water for 24 hours at 37°C before shear bond testing. Independent t-test and analysis of variance were applied to the results.
Results: The results indicated that the nanocomposite offered significantly higher bond strength compared to conventional composite. In addition presence of affected dentin significantly reduced the bond strength of both the composite types.
Prabhakar AR, Raj S, Raju OS. Comparison of shear bond strength of composite, compomer and resin modified glass ionomer in primary and permanent teeth: An in vitro study. J Indian Soc Pedo Prev Dent 2003;21(3);86-94.
Wu XR, Xie W, Sun Y, Sun S. Mechanical properties of dental nanocomposites reinforced with polyhedral oligomeric silesquioxane (POSS). Adv Matr Research 2009;79-82:345-348.
Mitra BS, Wu D, Holmes BN. An application of nanotechnology in advanced dental materials. J Am Dent Assoc 2003; 134(10):1382-1390.
Yoshiyama M, Urayama A, Kimochi T, Matsuo T, Pashley DH. Comparison of conventional vs self-etching adhesive bonds to caries affected dentin. Oper Dent 2000;25(3):163-169.
Nakajima M, Sano H, Burrow MF, Tagami J, Yoshiyama M, Ebisu S, Ciucchi B, Russell CM, Pashley DH. Tensile bond strength and SEM evaluation of carious affected dentin using dentin adhesives. J Dent Res 1995;74(10);1679-1688.
Dresch W, Volpato S, Gomes JC, Ribeiro NR, Reis A, Loguercio AD. Clinical evaluation of a nanofilled composite in posterior teeth: 12-month Results. Oper Dent 2006;31(4):409-417.
Khatri A, Nandlal B. Staining of a conventional and a nanofilled composite resin exposed in vitro to liquid ingested by children. Int J Clin Pediatr Dent 2010;3(3):183-188.
Miranda C, Prates LH, Vieira RS, Calvo MC. Shear bond strength of different adhesive systems to primary dentin and enamel. J Clin. Pediatr Dent 2006;31(1):35-40.
Sturdevant. Art and science of operative dentistry. 4th ed. St. Loius/London/Philadelphia: Mosby Int; 2002.
Cehreli ZC, Akca T. Effect of dentinal tubule orientation on the microtensile bond strength of primary dentin. J Dent Child 2003;70(2):139-144.
Amory C, Yvon J. Shear bond strength of light cured composite vs dentin characteristics. Dent Mater 1994;10(3):203-209.
Atash R, Van Den Abbeele A. Bond strengths of eight contemporary adhesives to enamel and to dentin: An in vitro study on bovine primary teeth. Int J of Paediatr Dent 2005;15(4): 264-273.
Kiremitci A, Yalcin F, Gokalp S. Bonding to enamel and dentin using self etch adhesive systems. Qiuntessence Int 2004;35(5): 367-370.
Stephen HW, Franklin R Tay. Xeno III Self etch bonding. Dentsply Update 2003;14:1-4.
Hosoya Y, Marshall GW Jr. The nano-hardness and elastic modulus of carious and sound primary canine dentin. Oper Dent 2004;29(2):142-149.
Bhoolabhai S. Anterior direct restoration with tetric ceram. Famdent Practical Dentistry Hand Book 2004;5(1):13-16.
Yoshiyama M, Tay FR, Doi J, Nishitani Y, Yamada T, Itou K, Carvalho RM, Nakajima M, Pashley DH. Bonding of Self- etch and total-etch adhesives to carious dentin. J Dent Res 2002;81(8):556-560.
Koyuturk, Sengun A, Ozer F, Sener Y, Gokalp A. Shear bond strength of self etching adhesive to caries affected dentin on gingival wall. Dent Mater J 2005;25(1):59-64.