Composites Associated with Pulp-Protection Material: Color-Stability Analysis after Accelerated Artificial Aging

ABSTRACT

Objectives: This study assessed the color stability of two composites associated with two pulp protectors submitted to accelerated artificial aging (AAA).

Methods: 60 test specimens were made with 0.5 mm of protection material (calcium hydroxide - CH or glass ionomer cement - GIC) and 2.5 mm of restoration material (Concept or QuixFil) and divided into 3 groups (n=10) according to the type of protection material/composite, and the control group (no protection). After polishing, color readings were obtained with a spectrophotometer (PCB 6807 Byk Gardner) before and after AAA for 384 hours, and L*, a*, and b* coordinates and total color variation (ΔE) were analyzed (2-way ANOVA, Bonferroni, α=05).

Results: Composites placed on CH presented lower L* levels than those on GIC, which presented higher L* values than the control group and lower b* values than those of the CH group. The Concept composite presented higher ΔE levels for all groups, differing statistically from QuixFil, except when placed on GIC.

Conclusions: It was concluded that the protection material could affect the color stability and AAA is a factor that enhances this effect, depending on the type of composite used. (Eur J Dent 2010;4:6-11)

Key words

Color stability - Composites - Pulp protection - Accelerated artificial aging

• References

• 1 Qvist V, Thylstrup A, Mjor IA. Restorative treatment pattern and longevity of amalgam restorations in Denmark. Acta Odontol Scand 1986; 44: 351-356
• 2 Dijken JW. A clinical evaluation of anterior conventional, microfiller, and hybrid composite resin filings: A 6-year follow-up study. Acta Odontol Scand 1986; 44: 357-367
• 3 Roberts MW, Folio J, Moffa JP, Guckes AD. Clinical evaluation of composite resin system with a dentin bonding agent for restoration of permanent posterior teeth: A 3-year study. J Prosthet Dent 1992; 67: 301-306
• 4 Redman CD, Hemmings KW, Good JA. The survival and clinical performance of resin-based composite restorations used to treat localized anterior tooth wear. Braz Dent J 2003; 194: 566-572
• 5 Hosoya Y, Goto G. Color changes of light-cured composite resins. J Clin Pediatr Dent 1992; 16: 247-252
• 6 Dietschi D, Campanile G, Holz J, Meyer JM. Comparison of the color stability of ten new-generation composites: an in vitro study. Dent Mater 1994; 10: 353-362
• 7 Inokoshi S, Burrow MF, Kataumi M, Yamada T, Takatsu T. Opacity and color changes of tooth-colored restorative materials. Oper Dent 1996; 21: 73-80
• 8 Fruits T, Duncanson M, Miranda F. In vitro weathering of selected direct esthetic restorative materials. Quintessence Int 1997; 28: 409-414
• 9 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: 264-270
• 10 Pires-de-Souza FCP, Garcia LFR, Hamida HM, Assirati LC. Color stability of composites subjected to accelerated aging after curing using either a halogen or a light emitting diode source. Braz Dent J 2007; 18: 119-123
• 11 Janda R, Roulet JF, Kaminsky M, Steffin G, Latta M. Color stability of resin matrix restorative materials as a function of the method of light activation. Eur J Oral Sci 2004; 112: 280-285
• 12 Janda R, Roulet JF, Latta M, Steffin G, Ruttermann S. Color stability of resin-based filling materials after aging when cured with plasma or halogen light. Eur J Oral Sci 2005; 113: 251-257
• 13 Ferracane JL, Moser JB, Greener EH. Ultraviolet light-induced yellowing of dental restorative resins. J Prosthet Dent 1985; 54: 483-487
• 14 Celik C, Yuzugullu B, Erkut S, Yamanel K. Effects of mouth rinses on color stability of resin composites. Eur J Dent 2008; 2: 247-304
• 15 Fava LR, Saunders WP. Calcium hydroxide paste: classification and clinical indications. Int Endod J 1999; 32: 257-253
• 16 Kwon YH, Huo MS, Kim KH, Kim SK, Kim YJ. Effects of hydrogen peroxide on the light reflectance and morphology of bovine enamel. J Oral Rehab 2002; 29: 473-477
• 17 CIE - Commission Internationale De Leclairage. Colorimetry technical report. Vienna, Austria: Bureau Central da La CIE; 2nd ed. pub. n° 15 1986
• 18 ASTM Standards G154-00a. Standard practice for operating fluorescent light apparatus for UV exposure of nonmetallic materials. Pennsylvania, United States: Annual Book of ASTM Standards v. 14.04; 2006
• 19 Heydecke G, Zhang F, Razzoog ME. In vitro color stability of double-layer veneers after accelerated aging. J Prosthet Dent 2001; 85: 551-557
• 20 Ruyter IE, Nilner K, Moller B. Color stability of dental resin materials for crown and bridge veneers. Dent Mater 1987; 3: 246-251
• 21 Kolbeck C, Rosentritt M, Lang R, Handel G. Discoloration of facing and restorative composites by UV-irradiation and staining food. Dent Mater 2006; 22: 63-68
• 22 Paravina RD, Kimura M, Powers JM. Evaluation of polymerization- dependent changes in color and translucency of resin composites using two formulae. Odontology 2005; 93: 46-51
• 23 Rosentritt M, Esch J, Behr M, Leibrock A, Handel G. In vivo color stability of resin composite veneers and acrylic resin teeth in removable partial dentures. Quintessence Int 1998; 29: 517-522
• 24 Shintani H, Yamaki M, Inoue T. Analysis of camphorquinone in visible light-cured composite resins. Dent Mater 1985; 1: 124-126
• 25 Powers JM, Fan PL, Raptis CN. Color stability of new composite restorative materials under accelerated aging. J Dent Res 1980; 59: 2071-2074
• 26 Asmussen E. Factors affecting the color stability of restorative resins. Acta Odontol Scand 1980; 41: 11-18
• 27 Burrow MF, Makinson OF. Color change in light-cured resins exposed to daylight. Quintessence Int 1991; 22: 447-452
• 28 Davis BA, Friedl KH, Powers JM. Color stability of hybrid ionomers after accelerated aging. J Prosthodont 1995; 4: 111-115
• 29 Zanin FR, Garcia LFR, Casemiro LA, Pires-de-Souza FCP. Effect of artificial accelerated aging on color stability and surface roughness of indirect composites. Eur J Prosthodont Restor Dent 2008; 16: 10-14
• 30 Pires-de-Souza FCP, Casemiro LA, Garcia LFR, Cruvinel DR. Color stability of dental ceramics submitted to artificial accelerated aging after repeated firings. J Prosthet Dent 2009; 101: 13-18
• 31 Ferracane JL. Hygroscopic and hydrolytic effects in dental polymer networks. Dent Mater 2006; 22: 211-222
• 32 Lee YK, Lu H, Powers JM. Effect of surface sealant and staining on the fluorescence of resin composites. J Prosthet Dent 2005; 93: 260-266
• 33 Arikawa H, Fujii K, Kanie T, Inoue K. Light transmittance characteristics of light-cured composite resins. Dent Mater 1998; 14: 405-411
• 34 Lee YK, Lim BS, Kim CW. Effect of surface conditions on the color of dental resin composites. J Biomed Mater Res Appl Biomater 2002; 63: 657-663
• 35 Lee YK, Lim BS, Kim CW. Difference in the colour and colour change of dental resin composites by the background. J Oral Rehabil 2005; 32: 227-233