Effect of different methods for creating smear layer on fluid movement across resin/dentin interfaces created by a current self-etching adhesive
Article Sidebar
Main Article Content
Abstract
Objective: The purpose of this study was to evaluate fluid movement across resin/dentin interfaces created by a current self-etching adhesive applied onto dentin with different prepared smear layer.
Materials and Methods: Dentin discs were prepared from extracted third molar and divided into 2 groups of smear layer-cover dentin discs created with either 360-grit silicon carbide paper or superfine grit diamond bur. For SEM investigation, smear layer free and smear layer covered specimens and smear layer free specimens by treating with 17% EDTA for 5 min were observed. For measurement of maximum permeability, fluid filtration rate of smear layer free specimens were measured under 20 cm H2O pressure. Then, smear layer was created with either silicon carbide paper or diamond bur and the fluid filtration rate was measured. The relative smear layer coverd dentin permeability (%P) was calculated. The smear layer covered specimens were further treated with a universal adhesive. The fluid infiltration rate and the relative bonded dentin permeability of bonded dentin were also measured and calculated.
Results: The results of SEM observation demonstrated 1-2 microns thick smear layer covered both dentin prepared with diamond bur and silicon carbide paper. There were no significant differences of maximum permeability, fluid infiltration rate of smear layer covered dentin and fluid infiltration rate of bonded dentin between specimens prepared with silicon carbide paper and diamond bur. The difference of %P of smear layer coverd dentin and %P of bonded dentin between dentin prepared with diamond bur and silicon carbide paper could not found. The application of the adhesive onto smear layer covered dentin could reduce the permeability.
Conclusions: In conclusion, the fluid movement across resin/dentin interfaces created by application of the universal adhesive was not interfered by different methods for creating smear layer.
Article Details
References
Eick JD, Wilko RA, Anderson CH, Sorensen SE. Scanning electron microscopy of cut tooth surfaces and identification of debris by use of the electron microprobe. J Dent Res 1970; 49: 1359-1368.
Sekimoto T, Derkson GD, Richardson AS. Effect of cutting instruments on permeability and morphology of the dentin surface. Oper Dent 1999; 24: 130-6
Pashley DH, Carvalho RM. Dentine permeability and dentine adhesion. J Dent 1997; 25: 355-372.
Senawongse P, Srihanon A, Muangmingsuk A, Harnirattisai C. Effect of dentine smear layer on the performance of self-etching adhesive systems: A micro-tensile bond strength study. J Biomed Mater Res B Appl Biomater 2010; 94: 212-21.
Saikaew P, Senawongse P, Chowdhury AA, Sano H, Harnirattisai C. Effect of smear layer and surface roughness on resin-dentin bond strength of self-etching adhesives. Dent Mater J 2018; 37: 973-980.
Reis A,Grandi V,Carlotto L,Bortoli G,Patzlaff R,Rodrigues Accorinte MdL, Dourado Loguercio A. Effect of smear layer thickness and acidity of self-etching solutions on early and long-term bond strength to dentin. J Dent 2005; 33: 549-559.
Sattabanasuk V, Vachiramon V, Qian F, Armstrong SR. Resin-dentin bond strength as related to different surface preparation methods. J Dent 2007; 35: 467-475.
Mine A, De Munck J, Cardoso MV, Van Landuyt KL, Poitevin A, Van Ende A, Matsumoto M, Yoshida Y, Kuboki T, Yatani H, Van Meerbeek B. Dentin-smear remains at self-etch adhesive interface. Dent Mater 2014; 30: 1147-1153.
Kenshima S, Reis A, Uceda-Gomez N, Tancredo Lde L, Filho LE, Nogueira FN, Loguercio AD. Effect of smear layer thickness and pH of self-etching adhesive systems on the bond strength and gap formation to dentin. J Adhes Dent 2005; 7: 117-126.
Yiu CK, Hiraishi N, King NM, Tay FR. Effect of dentinal surface preparation on bond strength of self-etching adhesives. J Adhes Dent 2008; 10: 173-82.
Sofan E, Sofan A, Palaia G, Palaia G, Tenore G, Romeo U, Migliau G. Classification review of dental adhesive systems: from the IV generation to the universal type. Ann Stomatol (Roma) 2017; 8: 1-17.
Van Meerbeek B, Yoshihara K, Yoshida Y, Mine A, De Munck J, Van Landuyt KL. State of the art of self-etch adhesives. Dent Mater 2011; 27: 17-28.
Tay FR, Pashley DH. Have dentin adhesives become too hydrophilic? J Can Dent Assoc 2003; 69(11):726-31.
Ito S, Hashimoto M, Wadgaonkar B, Svizero N, Carvalho RM, Yiu C, Rueggeberg FA, Foulger S, Saito T, Nishitani Y, Yoshiyama M, Tay FR, Pashley DH. Effects of resin hydrophilicity on water sorption and changes in modulus of elasticity. Biomaterials 2005; 26: 6449-59.
Tay FR, Pashley DH, Yoshiyama M. Two modes of nanoleakage expression in single-step adhesives. J Dent Res 2002; 81: 472-476.
Tay FR, King NM, Chan K-M, Pashley DH. How can nanoleakage occur in self-etching adhesive systems that demineralize and infiltrate simultaneously? J Adhes Dent 2002; 4: 255- 269.
Hashimoto M, Ito S, Tay FR, Svizero NR, Sano H, Kaga M, Pashley DH. Fluid movement across the resin-dentin interface during and after bonding. J Dent Res 2004; 83: 843-8.
Sauro S, Pashley DH, Montanari M, Chersoni S, Carvalho RM, Toledano M, Osorio R, Tay FR, Prati C. Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives. Dent Mater 2007; 23: 705-13.
Pashley D.H., Stewart F.P., & Galloway S.E. Effects of air-drying in vitro on human dentine permeability. Arch Oral Biol 1984; 29: 379-83.
Oliveira SSA, Pugach MK, Hilton JF, Watanabe LG, Marshall SJ, Marshall Jr GW. The influence of the dentin smear layer on adhesion: a self-etching primer vs. a total-etch system. Dent Mater 2003; 19: 758-767.
Inoue H, Inoue S, Uno S, Takahashi A, Koase K, Sano H. Microtensile bond strength of two single-step adhesive systems to bur-prepared dentin. J Adhes Dent 2001; 3: 129-136.
Ogata M, Harada N, Yamaguchi S, Nakajima M, Pereira PNR, Tagami J. Effects of different burs on dentin bond strengths of self-etching primer bonding systems. Oper Dent 2001; 26: 375-382.
Ogata M,Harada N,Yamaguchi S,Nakajima M,Tagami J. Effect of self-etch-ing primer vs phosphoric acid etchant on bonding to bur-prepared dentin. Oper Dent 2002; 27: 447-454.
Yiu CKY, Hiraishi N, Chersoni S, Breschi L, Ferrari M, Prati C, King NNM, Pashley DH, Tay FR. Single bottle adhesives behave as permeable membranes after polymerization. II. Differential permeability reduction with an oxalate desensitiser. J Dent 2006; 34: 106-116.
Tay FR, Pashley DH. Water-treeing: a potential mechanism for degradation of dentin adhesives. Am J Dent 2003; 16: 6-12.
Itthagarun A, Tay FR, Pashley DH, Wefel JS, Garcia-Godoy F, Wei SHY. Single-step, self-etch adhesives behave as permeable membranes after polymerization. Part III. Evidence from fluid conductance and artificial caries inhibition. Am J Dent 2004; 17: 394-400.
Bouillaguet S, Duroux B, Ciucchi B, Sano H. Ability of adhesive systems to seal dentin surfaces: an in vitro study. J Adhes Dent 2000; 2: 201-208.
Özok AR, De Gee AJ, Wu M-K, Wesselink PR. The influence of resin composite and bonded amalgam restorations on dentin permeability in class II cavities in vitro. Dent Mater 2001; 17: 477-484.