2026-06-08T11:06:12Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/340202024-10-28T15:23:58Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Macorra García, José Carlos De La
author
Pérez-Higueras Sánchez-Escalonilla, Juan
2023-06-19T13:33:43Z
2023-06-19T13:33:43Z
2014
Microtensile Bond Strength Test Bias Caused by Variations in Bonded Areas. The Journal of Adhesive Dentistry 2014;16:207–219.
1461-5185
10.3290/j.jad.a32068
https://hdl.handle.net/20.500.14352/34020
https//doi.org/10.3290/j.jad.a32068
http://www.quintpub.com/journals/jad
Purpose: While it has been shown that no method produces specimens with exactly the same cross-sectional bonded area (BA), BA variations within and between studies are a well-known covariate in microtensile test results. However, no method has yet been described to accurately acount for its influence. A procedure is presented that allows controlling for variations of BA effects on results. Further, a proposal for reporting is presented which enables resuls of different studies to be compared.
Materials and methods: partially using the results of the report in which the microtensile test was originally described, both general (caused by differences in BA) and specific (due to a material's performance differences and intrinsic biological varibility of specimens) variabilities were separated through linear regression of microtensile (MPa) to BA(mm2) pooled results. Comparing the specific variability of specimens-the residuals to the regression line-of groups allowed assessing differences between groups.
Results: A means comparison of residuals showed that specific differences were significant (t-test, p=0.0004). The null hypothesis could be rejected : materials' performances were different. This could not be determined in the original report, since BA variability was very high. A proposal for reporting of results to facilitate their clinical interpretation and comparison between studies is presented.
Conclusion:Controlling for general variability caused by differences in BA size allows precise comparison of microtensile tests results.
spa
Microtensile bond strength test bias caused by variations in bonded areas
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jadhesdent.pdf
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jadhesdent.pdf.txt