Bulk and surface properties related to composite filler size

Abstract

There are few studies that fully characterize the effect of the filler size on the surface, optical and mechanical properties of resin composites. AIM: To determine the influence of the filler size content on surface, optical and mechanical properties before and after accelerated aging. METHODS: Seven resin composites were investigated: Filtek Supreme® (3M/ESPE), Estelite Σ Quick® (Tokuyama), Evolu-X® (Dentsply), Esthet-X HD® (Dentsply), Opallis® (FGM), Herculite XRV Ultra® (Kerr) and Filtek Z250® (3M/ESPE). Elastic modulus (EM) and flexural strength (FS) were determined by three-point bending of specimens immersed or not in absolute ethanol for seven days. Roughness (Ra) and gloss (G.U.) analyses were determined before and after ethanol storage for seven days and CIELAB color change (ΔE*) was obtained with a spectrophotometer. Results were analyzed by two-way ANOVA (general linear model) for EM and FS, with repeated measures for roughness and gloss, and one-way ANOVA for ΔE*. All comparisons were performed by Tukey's test (5%). Pearsons' correlation test was performed to determine the correlation between EM, FS, roughness, gloss, and ΔE* with the mean filler sizes. RESULTS: Mechanical properties decreased for all materials when submitted to immersion in ethanol. Increasing filler size gradually increased EM, FS and roughness values; gloss values decreased and didn't significantly affects ΔE*. Nanofiller composites presented higher gloss values than the others. CONCLUSIONS: It was possible to determine that the average filler size is a good predictor just for FS and gloss retention.

nanocomposites; resin cements; surface properties

• ¹
  Chen MH. Update on Dental Nanocomposites. J Dent Res. 2010;89:549-60.
• ²
  Kim KH, Ong JL, Okuno O. The effect of filler loading and morphology on the mechanical properties of contemporary composites. J Prosthet Dent. 2002;87:642-9.
• ³
  Lutz F, Philips RW. A classification and evaluation of composite resin systems. J Prosthet Dent. 1983;50:480-8.
• ⁴
  Ferracane JL. Resin composite state of the art. Dent Mater. 2011;27:29-38.
• ⁵
  Mitra SB, Wu D, Holmes BN. An application of nanotechnology in advanced dental materials. J Am Dent Assoc. 2003;134:1382-90.
• ⁶
  Rastelli AN, Jacomassi DP, Faloni AP, Queiroz TP, Rojas SS, Bernardi MI et al. The filler content of the dental composite resins and their influence on different properties. Micro Res Tech. 2012;75:758-65.
• ⁷
  Curtis AR, Shortall AC, Marquis PM, Palin WM. Water uptake and strength characteristics of a nanofilled resin-based composite. J Dent. 2008;36:186-93.
• ⁸
  Ilie N, Renez A, Hickel R. Investigations towards nano-hybrid resin-based composites. Clin Oral Investig. 2013;17:185-193.
• ⁹
  Salgado VE, Cavalcante LM, Silikas N, Schneider LFJ. The influence of nanoscale inorganic contents over optical and surface properties of model composites. J Dent. 2013;41:e45-53.
• ¹⁰
  Silikas N, Kavvadia K, Eliades G, Watts DC. Surface characterization of modern resin composites: a multitechnique approach. Am J Dent. 2005;18:95-100.
• ¹¹
  Hosoya Y, Shiraishi T, Oshiro M, Ando S, Miyazaki M, Garcia-Godoy F. Color characteristics of resin composites in different color modes and geometries. J Oral Sci. 2009;51:123-30.
• ¹²
  Hannigan A, Lynch CD. Statistical methodology in oral and dental research: Pitfalls and recommendations. J Dent. 2013;41:385-392.
• ¹³
  Bagheri R, Burrow MF, Tyas M. Influence of food-simulating solutions and surface finish on susceptibility to staining of aesthetic restorative materials. J Dent. 2005;33:389-98.
• ¹⁴
  Buchalla W, Attin T, Hilgers R, Hellwig E. The effect of water storage and light exposure on the color and translucency of a hybrid and a microfilled composite. J Prosthet Dent. 2002;87:264-70.
• ¹⁵
  Sakaguchi RL. A review of the curing mechanics of composites and their significance in dental applications. Compend Contin Educ Dent. 1999;20:16-23.
• ¹⁶
  Sirin Karaarslan E, Bulbul M, Yildiz E, Secilmis A, Sari F, Usumez A. Effects of different polishing methods on color stability of resin composites after accelerated aging. Dent Mater J. 2013;32:58-67.
• ¹⁷
  Schneider LF, Moraes RR, Cavalcante LM, Sinhoreti MA, Correr-Sobrinho L, Consani S. Cross-link density evaluation through softening tests: effect of etanol concentration. Dent Mater. 2008;24:199-203.
• ¹⁸
  Asmussen E. Softening of BISGMA-based polymers by ethanol and by organic acids of plaque. Scandinavian J Dent Res. 1984;92:257-61.
• ¹⁹
  Gonçalves F, Kawano Y, Braga RR. Contraction stress related to composite inorganic content. Dent Mater. 2010;26:704-9.
• ²⁰
  Muench A, Correa IC, Grande RHM, João M. The effect of specimen dimensions on the flexural strength of a composite resin. J Appl Oral Sci. 2005;13:265-8.
• ²¹
  Ilie N, Hichel R. Investigations on mechanical behavior of dental composites. Clin Oral Investig. 2009;13:427-38.
• ²²
  Ardu S, Braut V, Uhac I, Benbachir N, Feilzer AJ, Krejci I. Influence of mechanical and chemical degradation on surface gloss of resin composite materials. Am J Dent. 2009;22:264-8.
• ²³
  Kakaboura A, Fragouli M, Rahiotis C, Silikas N. Evaluation of surface characteristics of dental composites using profilometry, scanning electron, atomic force microscopy and gloss-meter J Mater Sci. 2007;18:155-163.
• ²⁴
  O'Brien WJ, Johnston WM, Fanian F. The surface roughness and gloss of composites. J Dent Res. 1984;63:685-8.
• ²⁵
  Janus J, Fauxpoint G, Arntz Y, Pelletier H, Etienne O. Surface roughness and morphology of three nanocomposites after two different polishing treatments by a multitechnique approach. Dent Mater. 2010; 26:416-25.
• ²⁶
  Berger SB, Palialol AR, Cavalli V, Giannini M. Surface roughness and staining susceptibility of composite resins after finishing and polishing. J Esthet Restor Dent. 2011;23:34-43.
• ²⁷
  Gönülol N, Yilmaz F. The effects of finishing and polishing techniques on surface roughness and color stability of nanocomposites. J Dent. 2012;40:e64-70.
• ²⁸
  Pinto GD, Dias KC, Cruvinel DR, Garcia LR, Consani S, Pires-de-Souza FP. Influence of finishing/polishing on color stability and surface roughness of composites submitted to accelerated artificial aging. Indian J Dent Res. 2013;24:363-8.
• ²⁹
  Lee YK. Influence of scattering/absorption characteristics on the color of resin composites. Dent Mater. 2007;23:124-31.
• ³⁰
  Topcu FT, Sahinkesen G, Yamanel K, Erdemir U, Oktay EA, Ersahan S. Influence of different drinks on the colour stability of dental resin composites. Eur J Dent. 2009;3:50-6.
• ³¹
  Schulze KA, Marshall SJ, Gansky SA, Marshall GW. Color stability and hardness in dental composites after accelerated aging. Dental Mater. 2003;19:612-9.

Publication Dates

• Publication in this collection
  31 Jan 2014
• Date of issue
  Dec 2013

History

• Received
  25 Aug 2013
• Accepted
  03 Dec 2013