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Aged dentin does not affect bonding.

 
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john kanca



Joined: 14 May 2005
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PostPosted: Mon Sep 15, 2008 9:05 am    Post subject: Aged dentin does not affect bonding. Reply with quote

Oper Dent. 2008 May-Jun;33(3):282-6.Links
The effect of subject age on the microtensile bond strengths of a resin and a resin-modified glass ionomer adhesive to tooth structure.Brackett WW, Tay FR, Looney SW, Ito S, Haisch LD, Pashley DH.
Department of Oral Rehabilitation, School of Dentistry, Medical College of Georgia, Augusta, USA. wbrackett@mail.mcg.edu

In this study, the microtensile bond strengths of an etch-and-rinse resin adhesive to dentin and enamel and a resin-modified glass ionomer adhesive to dentin were determined on teeth known to have originated from subjects over 60 years of age. The same tests were repeated on teeth originating from young subjects. The resin adhesive was Prime & Bond NT (Caulk/Dentsply), while the resin-modified glass ionomer adhesive was Fuji Bond LC (GC America). Both were paired with the same hybrid resin composite, TPH3 (Caulk/Dentsply). Testing was performed after 48 hours using a "non-trimming" microtensile test at a crosshead speed of 0.6 mm/minute. No significant differences were observed between the young and aged teeth for any comparison (p > 0.05). SEM evaluation of the etched dentinal surfaces demonstrated less depth of decalcification in the intertubular areas of aged dentin, but there was no observable difference within the tubules of young and aged dentin.
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