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Titolo:
Video rate confocal microscopic imaging of dentin/adhesive interfacial failure under load
Autore:
Griffiths, BM; Watson, TF; Pagliari, DE; Pilecki, P; Sherriff, M;
Indirizzi:
Guys Hosp, Univ London Kings Coll, Div Conservat Dent, London SE1 9RT, England Guys Hosp London England SE1 9RT Conservat Dent, London SE1 9RT, England Guys Hosp, Univ London Kings Coll, Dept Dent Biomat Sci, London SE1 9RT, England Guys Hosp London England SE1 9RT ent Biomat Sci, London SE1 9RT, England Eastman Dent Inst, Dept Prosthet Dent, London, England Eastman Dent Inst London England t, Dept Prosthet Dent, London, England
Titolo Testata:
AMERICAN JOURNAL OF DENTISTRY
fascicolo: 5, volume: 13, anno: 2000,
pagine: 271 - 279
SICI:
0894-8275(200010)13:5<271:VRCMIO>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
DENTIN BONDING SYSTEMS; ADHESION; STRENGTH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Watson, TF Guys Hosp, Univ London Kings Coll, Div Conservat Dent, London Bridge, London SE1 9RT, England Guys Hosp London Bridge London England SE1 9RT E1 9RT, England
Citazione:
B.M. Griffiths et al., "Video rate confocal microscopic imaging of dentin/adhesive interfacial failure under load", AM J DENT, 13(5), 2000, pp. 271-279

Abstract

Purpose: To obtain information on interfacial failure by recording video rate images of the interface as it failed, while simultaneously recording the load applied. Materials and Methods: Fluorescent labeled adhesives were used to retain resin-based composite bobbins on the flat exposed dentin surface of teeth included in epoxy resin blocks. The teeth were secured in a miniature straining stage while the bobbins were loaded in shear mode and theinterface viewed with a tandem scanning confocal microscope. Images of theinterface during failure were recorded with the aid of computer image processing and storage. The dynamic failure pattern, site of failure (after repositioning the fractured bobbin under the microscope) and shear bond stresswere analyzed for four dentin adhesives [OptiBond (OB), Scotchbond Multi-Purpose Plus (SBMP+), Clearfil Liner Bond 2 (CFLB2) and ESPE Bonding System (EBS)]. Control specimens without fluorescent dyes were also studied. Four dynamic patterns of failure were observed: snap, slip/stick, peel and shockwave were seen respectively with OB, SBMP+, CFLB2 and EBS adhesive. The shear bond strengths were ranked EBS*>OB>SBMP+>CFLB2* (*statistically different at proportional to =0.05). No significant difference was found between specimens with and without fluorescent dye.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/18 alle ore 08:12:18