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  1. Article ; Online: Adhesive/Dentin interface: the weak link in the composite restoration.

    Spencer, Paulette / Ye, Qiang / Park, Jonggu / Topp, Elizabeth M / Misra, Anil / Marangos, Orestes / Wang, Yong / Bohaty, Brenda S / Singh, Viraj / Sene, Fabio / Eslick, John / Camarda, Kyle / Katz, J Lawrence

    Annals of biomedical engineering

    2010  Volume 38, Issue 6, Page(s) 1989–2003

    Abstract: ... at the adhesive/dentin interface can be the first defense against these noxious, damaging substances. The intent ... at the adhesive/dentin interface; to examine physico-chemical factors that affect the integrity and durability ... of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical ...

    Abstract Results from clinical studies suggest that more than half of the 166 million dental restorations that were placed in the United States in 2005 were replacements for failed restorations. This emphasis on replacement therapy is expected to grow as dentists use composite as opposed to dental amalgam to restore moderate to large posterior lesions. Composite restorations have higher failure rates, more recurrent caries, and increased frequency of replacement as compared to amalgam. Penetration of bacterial enzymes, oral fluids, and bacteria into the crevices between the tooth and composite undermines the restoration and leads to recurrent decay and premature failure. Under in vivo conditions the bond formed at the adhesive/dentin interface can be the first defense against these noxious, damaging substances. The intent of this article is to review structural aspects of the clinical substrate that impact bond formation at the adhesive/dentin interface; to examine physico-chemical factors that affect the integrity and durability of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical forces to undermine the composite restoration. The article will examine the various avenues that have been pursued to address these problems and it will explore how alterations in material chemistry could address the detrimental impact of physico-chemical stresses on the bond formed at the adhesive/dentin interface.
    MeSH term(s) Adhesiveness ; Animals ; Composite Resins/chemistry ; Dental Cements/chemistry ; Dentin/chemistry ; Humans ; Materials Testing ; Surface Properties ; Tensile Strength
    Chemical Substances Composite Resins ; Dental Cements
    Language English
    Publishing date 2010-02-27
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 185984-5
    ISSN 1573-9686 ; 0191-5649 ; 0090-6964
    ISSN (online) 1573-9686
    ISSN 0191-5649 ; 0090-6964
    DOI 10.1007/s10439-010-9969-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1018: Show issues Location:
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  2. Article: Adhesive/Dentin Interface: The Weak Link in the Composite Restoration

    Spencer, Paulette / Ye, Qiang / Park, Jonggu / Topp, Elizabeth M / Misra, Anil / Marangos, Orestes / Wang, Yong / Bohaty, Brenda S / Singh, Viraj / Sene, Fabio / Eslick, John / Camarda, Kyle / Katz, J. Lawrence

    Annals of biomedical engineering. 2010 June, v. 38, no. 6

    2010  

    Abstract: ... at the adhesive/dentin interface can be the first defense against these noxious, damaging substances. The intent ... at the adhesive/dentin interface; to examine physico-chemical factors that affect the integrity and durability ... of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical ...

    Abstract Results from clinical studies suggest that more than half of the 166 million dental restorations that were placed in the United States in 2005 were replacements for failed restorations. This emphasis on replacement therapy is expected to grow as dentists use composite as opposed to dental amalgam to restore moderate to large posterior lesions. Composite restorations have higher failure rates, more recurrent caries, and increased frequency of replacement as compared to amalgam. Penetration of bacterial enzymes, oral fluids, and bacteria into the crevices between the tooth and composite undermines the restoration and leads to recurrent decay and premature failure. Under in vivo conditions the bond formed at the adhesive/dentin interface can be the first defense against these noxious, damaging substances. The intent of this article is to review structural aspects of the clinical substrate that impact bond formation at the adhesive/dentin interface; to examine physico-chemical factors that affect the integrity and durability of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical forces to undermine the composite restoration. The article will examine the various avenues that have been pursued to address these problems and it will explore how alterations in material chemistry could address the detrimental impact of physico-chemical stresses on the bond formed at the adhesive/dentin interface.
    Language English
    Dates of publication 2010-06
    Size p. 1989-2003.
    Publisher Springer US
    Publishing place Boston
    Document type Article
    ZDB-ID 185984-5
    ISSN 1573-9686 ; 0191-5649 ; 0090-6964
    ISSN (online) 1573-9686
    ISSN 0191-5649 ; 0090-6964
    DOI 10.1007/s10439-010-9969-6
    Database NAL-Catalogue (AGRICOLA)

    Full text online

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1018: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article: Spectroscopic and morphologic characterization of the dentin/ adhesive interface.

    Lemor, R M / Kruger, M B / Wieliczka, D M / Swafford, J R / Spencer, P

    Journal of biomedical optics

    2012  Volume 4, Issue 1, Page(s) 22–27

    Abstract: ... in the composite restoration is the dentin/adhesive bond. The purpose of this study was to correlate morphologic ... from extracted, unerupted human third molars. Sections of the dentin/adhesive interface were investigated using ... for the micro-Raman spectroscopy. Sections of the dentin/adhesive interface, differentially stained to identify ...

    Abstract The potential environmental risks associated with mercury release have forced many European countries to ban the use of dental amalgam. Alternative materials such as composite resins do not provide the clinical function for the length of time characteristically associated with dental amalgam. The weak link in the composite restoration is the dentin/adhesive bond. The purpose of this study was to correlate morphologic characterization of the dentin/adhesive bond with chemical analyses using micro-Fourier transform infrared and micro-Raman spectroscopy. A commercial dental adhesive was placed on dentin substrates cut from extracted, unerupted human third molars. Sections of the dentin/adhesive interface were investigated using infrared radiation produced at the Aladdin synchrotron source; visible radiation from a Kr+ laser was used for the micro-Raman spectroscopy. Sections of the dentin/adhesive interface, differentially stained to identify protein, mineral, and adhesive, were examined using light microscopy. Due to its limited spatial resolution and the unknown sample thickness the infrared results cannot be used quantitatively in determining the extent of diffusion. The results from the micro-Raman spectroscopy and light microscopy indicate exposed protein at the dentin/adhesive interface. Using a laser that reduces background fluorescence, the micro-Raman spectroscopy provides quantitative chemical and morphologic information on the dentin/adhesive interface. The staining procedure is sensitive to sites of pure protein and thus, complements the Raman results. © 1999 Society of Photo-Optical Instrumentation Engineers.
    Language English
    Publishing date 2012-09-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1309154-2
    ISSN 1083-3668
    ISSN 1083-3668
    DOI 10.1117/1.429917
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 4699: Show issues Location:
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  4. Article: Enhancement of adhesion between resin coating materials and resin cements.

    Udo, Tomoaki / Nikaido, Toru / Ikeda, Masaomi / Weerasinghe, Dinesh S / Harada, Naoko / Foxton, Richard M / Tagami, Junji

    Dental materials journal

    2007  Volume 26, Issue 4, Page(s) 519–525

    Abstract: ... in indirect restorations. However, the weak link of a specimen bonded using the resin coating technique was ... Resin coating technique is a unique method that improves the dentin bond strength of resin cements ... reported to be the bonded interface between the resin coating material and resin cement. The purpose ...

    Abstract Resin coating technique is a unique method that improves the dentin bond strength of resin cements in indirect restorations. However, the weak link of a specimen bonded using the resin coating technique was reported to be the bonded interface between the resin coating material and resin cement. The purpose of this study, therefore, was to enhance the bonding performance between a resin coating material and a resin cement. Two light-cured flowable composites, Protect Liner F and Clearfil Flow FX, were used as coating materials, and two dual-cure composite materials, Panavia F 2.0 and Clearfil DC Core Automix, were used as resin cements. The ultimate tensile strength of each material and the microtensile bond strengths of the bonded specimens of resin coating material and resin cement were measured using a crosshead speed of 1.0 mm/min. Three-way ANOVA (p=0.05) revealed that the highest microtensile bond strength was obtained using a combination of Clearfil Flow FX and Clearfil DC Core Automix, and when the surface of the coating material was treated with ED Primer II. It was strongly suggested that materials with a higher ultimate tensile strength, when used in both resin coating and cementation, could enhance the bond strength between the two.
    MeSH term(s) Coated Materials, Biocompatible/chemistry ; Composite Resins/chemistry ; Dental Bonding/methods ; Materials Testing/methods ; Resin Cements/chemistry ; Tensile Strength
    Chemical Substances Coated Materials, Biocompatible ; Composite Resins ; Resin Cements ; flowable hybrid composite
    Language English
    Publishing date 2007-09-14
    Publishing country Japan
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 605650-7
    ISSN 0287-4547
    ISSN 0287-4547
    DOI 10.4012/dmj.26.519
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 2687: Show issues Location:
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  5. Article: Quantitative comparison of the water permeable zone among four types of dental adhesives used with a dual-cured composite.

    Chang, Juhea / Platt, Jeffrey A / Yi, Keewook / Cochran, Michael A

    Operative dentistry

    2006  Volume 31, Issue 3, Page(s) 346–353

    Abstract: ... Plus Self-Etch, when coupled with dual-cured composite, CoreRestore 2 (Kerr). Twenty flat dentin ... This study compared silver penetration in the adhesive interface among four versions of adhesives ... of artifactual fracture from dehydration stress of the SEM. This may be indicative of weak links in the bonded ...

    Abstract This study compared silver penetration in the adhesive interface among four versions of adhesives from the same manufacturer: OptiBond FL, OptiBond Solo Plus, OptiBond Solo Plus Dual Cure, and OptiBond Solo Plus Self-Etch, when coupled with dual-cured composite, CoreRestore 2 (Kerr). Twenty flat dentin surfaces were prepared using one of the adhesives and bonded with the composite, following the manufacturer's instructions. The surfaces were sectioned into 2-mm slabs and immersed in ammoniacal silver nitrate for 24 hours. Each specimen was exposed to a photodeveloping solution for eight hours and examined with a scanning electron microscope (SEM). The water permeable area occupied by the silver nitrate tracer was determined, and the relative weight of silver was analyzed by wavelength dispersive spectrometry (WDS). The OptiBond FL group had a significantly lower silver content than the other groups (p < 0.0001). Each group demonstrated different patterns of silver deposition within the adhesive layer and within various features of artifactual fracture from dehydration stress of the SEM. This may be indicative of weak links in the bonded interfaces. Simplified-step adhesives showed increased permeability, which can lead to disruption of coupling with composites.
    MeSH term(s) Adhesives/chemistry ; Composite Resins/chemistry ; Dental Bonding ; Dental Cements/chemistry ; Dentin/ultrastructure ; Electron Probe Microanalysis ; Humans ; Materials Testing ; Methacrylates/chemistry ; Microscopy, Electron, Scanning ; Permeability ; Resin Cements/chemistry ; Silver ; Silver Staining ; Water/chemistry
    Chemical Substances Adhesives ; Composite Resins ; CoreRestore ; DCR cement ; Dental Cements ; Methacrylates ; OptiBond FL ; OptiBond Solo Plus ; OptiBond Solo Plus Self-Etch ; Resin Cements ; ammoniacal silver ; Water (059QF0KO0R) ; Silver (3M4G523W1G)
    Language English
    Publishing date 2006-05
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Randomized Controlled Trial
    ZDB-ID 752995-8
    ISSN 1559-2863 ; 0361-7734
    ISSN (online) 1559-2863
    ISSN 0361-7734
    DOI 10.2341/05-40
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 1963: Show issues Location:
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