Macorra García, José Carlos De LaSan Nicolás, Adriana2023-06-202023-06-202005-10Delamacorra J, Sannicolas A. Method to compare μ-tensile bond strength of a self-etching adhesive and μ-cohesive strength of adjacent dentin. Dental Materials 2005;21:946–53. https://doi.org/10.1016/j.dental.2004.11.007.0109-564110.1016/j.dental.2004.11.007https://hdl.handle.net/20.500.14352/52252Laboratory results from tensile or micro-tensile testing of adhesive/restorative systems need a gold standard to make their interpretation possible. This can be done by comparing the [mu]-tensile bond strength ([mu]TBS) of the tested adhesive(s) with the [mu]-tensile cohesive strength ([mu]TCS) of the adjancent dentin, which in meant to be replaced by the restoration. Objectives: to test immediate [mu]TBS of and adhesive/restorative system versus [mu]TCS of the dentin adjacent to the bonded interface, in perfused specimens. Methods: enamel and roots of five-third sound molars were removed and teeth were perfused (30 cm distelled water) until after the bonding procedure was completed. Parallel grooves (1.5-mm wide X 1.5-mm deep, separeted by 1.5 mm), were drilled in the exposed dentin, under water refrigaration. Teeth were restored (AdheSE/Filtek Z250). Specimens were sawn from grooves to test [mu]TBS (n=32) of dentin, adjacent to adhesive interfaces, both areas to be tested at the same relative depth. Areas to be studied were rounded (mean bonded surface area for both groups, BA=0.68 mm2), and [mu]TBS and [mu]TCS were found. As not all BAs were identical, residuals of [mu]TBS and [mu]TCS values to the regression line relating BA and tensile test result (representing the null hypothesis, i.e. [mu]TBS=[mu]TCS) were compared using a non-parametric test. Results: difference in the means of residuals was not stadistically significant (two tails p=0.067). Significance: mean [mu]TBS of the tested adhesive was nor different to mean [mu]TCS of adjacent dentine. The null hypothesis was not rejected.spajournal articlehttps//doi.org/10.1016/j.dental.2004.11.007http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6VP3-4G3SC8T-3-7&_cdi=6195&_user=144492&_orig=browse&_coverDate=10%2F31%2F2005&_sk=999789989&view=c&wchp=dGLbVlz-zSkWW&md5=eea6a773d38969ebe0a9e697f5a6a960&ie=/sdarticle.pdfopen accessMicro-tensile bond strengthMicro-cohesive dentin strengthSelf-etch adhesiveDentinOdontología preventivaMateriales dentales3213.13 Ortodoncia-Estomatología