A challenge to the conventional wisdom that simultaneous etching and resin infiltration always occurs in self-etch adhesives

Biomaterials
Ricardo M CarvalhoFranklin R Tay

Abstract

This study provided morphological evidence that discrepancies between the depth of demineralisation and the depth of resin infiltration can occur in some mild self-etch adhesives. Sound dentine specimens derived from extracted human third molars were bonded with 5 one-step and 5 two-step self-etch adhesives. One millimeter thick slabs containing the resin-dentine interfaces were immersed in 50 wt% aqueous ammoniacal silver nitrate and processed for TEM examination. A zone of partially etched but uninfiltrated dentine was identified beneath the hybrid layers in the milder versions of both one-step and two-step self-etch adhesives. This zone was characterised by the occurrence of silver deposits along the interfibrillar spaces of mineralised collagen fibrils. The silver infiltrated interfibrillar spaces were clearly identified from the one-step self-etch adhesives Xeno III, iBond, Brush&Bond and the experimental adhesive, and were thinner and only occasionally observed in the two-step self-etch adhesives Clearfil SE Bond and Clearfil Protect Bond. The more aggressive one-step and two-step adhesives that exhibit more abrupt transitions from completely demineralised to mineralised dentin were devoid of these silver-infiltrated inte...Continue Reading

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Citations

Jun 15, 2007·Journal of Materials Science. Materials in Medicine·Manuel ToledanoFranklin Tay
Aug 21, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Leo TjäderhaneDavid H Pashley
Dec 12, 2012·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Manuel ToledanoRaquel Osorio
Nov 3, 2007·Photomedicine and Laser Surgery·Marcella Esteves-OliveiraNorbert Gutknecht
Jun 28, 2012·Journal of Dental Research·Y Zhang, Y Wang
Apr 6, 2013·Journal of Applied Oral Science : Revista FOB·Camila Sabatini
Aug 25, 2012·Operative Dentistry·H MoosaviR Khodadadi
Sep 29, 2011·Dental Materials Journal·Duck-Su KimSun-Young Kim
Oct 6, 2012·Dental Materials Journal·Evrim Eliguzeloglu DalkilicMutlu Ozcan
Jun 27, 2014·European Journal of Dentistry·Emel KaramanBerrin Dayangac
Jun 28, 2013·Operative Dentistry·J PerdigãoA D Loguercio
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Sep 20, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·Martino ColonnaLorenzo Breschi
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Feb 6, 2008·Journal of Dentistry·Raquel OsorioManuel Toledano
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Aug 8, 2007·Dental Materials : Official Publication of the Academy of Dental Materials·Yang YuanJunji Tagami
May 30, 2007·Dental Clinics of North America·Jorge Perdigão

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