Artículos de revistas
Effect Of Salivary Contamination At Different Steps Of The Bonding Process On The Microleakage Around Class V Restorations
Registro en:
Brazilian Journal Of Oral Sciences. , v. 6, n. 23, p. 1445 - 1449, 2007.
16773217
2-s2.0-41749123930
Autor
Rosa C.B.
Cavalcanti A.N.
Fontes C.M.
Mathias P.
Institución
Resumen
This study aimed to investigate the influence of the moment of salivary contamination during the bonding procedure (before or after acid conditioning) on the microleakage around composite resin restorations. Sixty bovine incisors received two Class V preparations (one with dentin margins and other with enamel margins). Teeth were randomly assigned into three, groups (n-20): 1) control (not contaminated); 2) salivary contamination before etching with 34% phosphoric acid; and, 3) salivary contamination after acid etching. Cavities were restored using Prime & Bond NT (Dentsply) adhesive system and TPH Spectrum (Dentsply) composite according to manufacturer instructions. Teeth were thermocycled (500x, 5-55°C, 60s/bath), immersed in 2% methylenee blue buffered solution (pH 7.0), and sectioned into two halves. Three examiners measured the extent of dye penetration or dentin and enamel margins in a stereoscope microscope, using four representative scores. Statistical analysis were performed with Kruskal-Wallis/Wilcoxon tests (α-5%). The results showed that enamel and dentin margins did not present significant differences (p>0.05). However, significantly higher dye penetration was observed on substrates etched and further contaminated with saliva. It was concluded that salivary contamination after acid etching increases the microleakage around composite resin restorations, especially at dentin margins. However, acid etching subsequent to the contamination can avoid negative effects on restorations margins. 6 23 1445 1449 Van Meerbeek, B., Van Landuyt, K., De Munck, J., Hashimoto, M., Peumans, M., Lambrechts, P., Technique -sensitivity of contemporary adhesives (2005) Dent Mater J, 24, pp. 1-13 Civelek, A., Ersoy, M., L'Hotelier, E., Soyman, M., Say, E.C., Polymerization shrinkage and microleakage in Class II cavities of various resin composites (2003) Oper Dent, 28, pp. 635-641 Besnault, C., Attal, J.P., Influence of a simulated oral environment on microleakage of two adhesive systems in Class II composite restorations (2002) J Dent, 30, pp. 1-6 Spencer, P., Wang, Y., Bohaty, B., Interfacial chemistry of moisture-aged class II composite restorations (2006) J Biomed Mater Res B Appl Biomater, 77, pp. 234-240 Direct and indirect restorative materials (2003) J Am Dent Assoc, 134, pp. 463-472. , Council on Scientific Affairs ADA Soldani, F., Foley, J., An assessment of rubber dam usage amongst specialists in paediatric dentistry practising within the UK (2007) Int J Paediatr Dent, 17, pp. 50-56 Fernandes, A.S., Rodrigues, S., Singhal, K., Murthi, M.S., Assessment of chair side techniques for composite resin restoration - a survey (2003) Indian J Dent Res, 14, pp. 47-56 Taskonak, B., Sertgoz, A., Shear bond strengths of saliva contaminated 'one-bottle' adhesives (2002) J Oral Rehabil, 29, pp. 559-564 Eiriksson, S.O., Pereira, P.N., Swift Jr., E.J., Heymann, H.O., Sigurdsson, A., Effects of saliva contamination on resin-resin bond strength (2004) Dent Mater, 20, pp. 37-44 Hiraishi, N., Kitasako, Y., Nikaido, T., Nomura, S., Burrow, M.F., Tagami, J., Effect of artificial saliva contamination on pH value change and dentin bond strength (2003) Dent Mater, 19, pp. 429-434 Park, J.W., Lee, K.C., The influence of salivary contamination on shear bond strength of dentin adhesive systems (2004) Oper Dent, 29, pp. 437-442 Yoo, H.M., Oh, T.S., Pereira, P.N., Effect of saliva contamination on the microshear bond strength of one-step self-etching adhesive systems to dentin (2006) Oper Dent, 31, pp. 127-134 Hitmi, L., Attal, J.P., Degrange, M., Influence of the time-point of salivary contamination on dentin shear bond strength of 3 dentin adhesive systems (1999) J Adhes Dent, 1, pp. 219-232 Reis, A.F., Giannini, M., Kavaguchi, A., Soares, C.J., Line, S.R., Comparison of microtensile bond strength to enamel and dentin of human, bovine, and porcine teeth (2004) J Adhes Dent, 6, pp. 117-121 Eiriksson, S.O., Pereira, P.N., Swift, E.J., Heymann, H.O., Sigurdsson, A., Effects of blood contamination on resin-resin bond strength (2004) Dent Mater, 20, pp. 184-190 Toledano, M., Osorio, R., Ceballos, L., Fuentes, M.V., Fernandes, C.A., Tay, F.R., Microtensile bond strength of several adhesive systems to different dentin depths (2003) Am J Dent, 16, pp. 292-298