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A Critical Review of the Durability of Adhesion to Tooth Tissue: Methods and Results
J. De Munck1,
K. Van Landuyt1,
M. Peumans1,
A. Poitevin1,
P. Lambrechts1,
M. Braem2 and
B. Van Meerbeek1,*
1 Leuven BIOMAT Research Cluster, Department of Conservative Dentistry, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Catholic University of Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium; and
2 Department TEWO, Laboratory of Dental Materials, University of Antwerp-RUCA, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium;

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Figure 1. Classification of contemporary adhesives following adhesion strategy and number of clinical application steps. Gi = glass ionomer; PAA = polyalkenoic acid.
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Figure 4. Working principle of the micro-rotary fatigue resistance (µRFR) test set-up. (a) A small rectangular beam with a rounded constriction at the tooth-biomaterial interface (diameter, 1.2 mm) is prepared by means of a diamond saw and a lathe. At a fixed distance of 12.5 mm from the interface (l = lever arm), a load (F) is applied, while the tooth part of the specimen is still clamped in the chuck of the lathe. Maximal stress (tension) is induced at the upper part of the interface (). (b) When the specimen is rotated around its main axis, the outer layer of the interface () is subjected to sinusoidal tension-compression cycles (S = stress).
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Figure 5. TEM photomicrograph showing the silver tracer penetration within an adhesive interface prepared with an experimental mild, one-step self-etch adhesive (acetone/water-based adhesive, containing HEMA and a carboxyl- and a phosphate-based functional monomer; GC, Japan). Tiny silver particles are scattered throughout the hybrid layer (white hand pointer) and the adhesive resin. Note also the nanofiller in the adhesive resin (black hand pointer).
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Journal of Dental Research, Vol. 84, No. 2,
118-132 (2005)
DOI: 10.1177/154405910508400204

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