Microtensile Bond Strengths of Two Adhesive Resins to Discolored Dentin after Amalgam Removal

Harnirattisai, Choltacha; Senawongse, Pisol; Tagami, Junji

doi:10.1177/154405910708600307

Cited by 15 publications

(25 citation statements)

References 20 publications

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“…Harnirattisai et al 9 found lower bond strengths to dark discoloured dentin after amalgam removal. Further studies will be required for developing clinical guidelines for adhesive restorative procedures on discoloured dentin after amalgam removal.…”

Section: Discussionmentioning

confidence: 99%

“…Harniratissai et al 9 For high-copper amalgams no further studies on the penetration of elements into dentin and only data from studies on marginal seals and corrosion phenomena of highcopper amalgams are available.…”

Section: Kurosaki and Fusayamamentioning

confidence: 99%

“…9 From a clinical point of view, it is difficult to decide if the staining is caused by the amalgam or by the previous caries process or both. As a consequence, it is hard to determine if and until what degree stained dentin should be removed in order to get a reliable substrate for any kind of adhesive restorative treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Typically Sn was the element that was 6 found in dentin in all dentin penetration studies. 9,[18][19][20][21][22][23][24][25] Mateer and Reitz 21 detected low Hg and Ag content in blackened dentin, but the Sn content in dentin adjacent to amalgam was about as …”

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confidence: 99%

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Penetration of amalgam constituents into dentine

Scholtanus

Özcan

Huysmans

2009

Journal of Dentistry

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OBJECTIVES: Amalgam restorations are replaced by adhesively placed composite resin restorations at an increasing rate. After the removal of amalgam dentine often shows marked dark discoloration that is attributed to the penetration of corrosion products from overlying amalgams. It is questioned whether penetration of metals into dentine affects the dentine as a substrate for adhesive procedures. This study has been performed to clarify the origin of dark discoloration of dentine by metals from amalgam with special regards to corrosion products. METHODS: A review of the literature has been performed using Medline database. As keywords dentine and amalgam, subsequently combined with penetration, interface, crevice, interaction, corrosion, were used. This was followed up by extensive hand search using reference lists of relevant articles. RESULTS: Data in the literature have been gathered from extracted amalgam filled teeth and from artificially aged amalgam filled teeth. Corrosion studies have been performed in vivo aged teeth as well as in vitro. Sn is the main element, followed by Zn and Cu, that is consistently found in dentine underneath amalgam, as well as in amalgam corrosion products and in marginal seal deposits. Penetration of elements from amalgam has only been observed in discolored and in demineralised dentine. CONCLUSIONS: Darkly discolored dentine as found underneath amalgam restorations contains amalgam corrosion products and is demineralised. Therefore it must be considered a different substrate for clinical procedures than sound dentine. Penetration of Amalgam Constituents into Dentin ABSTRACTObjective: Amalgam restorations are replaced by adhesively placed composite resin restorations at an increasing rate. After removal of amalgam, dentin often shows marked dark discoloration that is attributed to penetration of corrosion products from overlying amalgams. It is questioned if penetration of metals into dentin effects the dentin as a substrate for adhesive procedures. This study has been performed to clarify the origin of dark discoloration of dentin by metals from amalgam with special regards to corrosion products. Methods:A review of the literature has been performed using Medline database. As keywords dentin and amalgam, subsequently combined with penetration, interface, crevice, interaction, 2 corrosion, were used. This was followed up by extensive hand search using reference lists of relevant articles.Results: Data in the literature have been gathered from extracted amalgam filled teeth and from artificially aged amalgam filled teeth. Corrosion studies have been performed in vivo aged teeth as well as in vitro. Sn is the main element, followed by Zn and Cu, that is consistently found in dentin underneath amalgam, as well as in amalgam corrosion products and in marginal seal deposits. Penetration of elements from amalgam has only been observed in discoloured and in demineralised dentin. Conclusions:Darkly discoloured dentin as found underneath amalgam restorations contains amalgam cor...

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Section: Discussionmentioning

confidence: 99%

Section: Kurosaki and Fusayamamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Penetration of amalgam constituents into dentine

Scholtanus

Özcan

Huysmans

2009

Journal of Dentistry

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“…The resistance against initiation of crack growth and propagation depends on the geometry and the load configuration of the specimen. The use of the microtensile bond strength test to evaluate bond strength of adhesive systems has been widely accepted (18)(19)(20). Smaller specimens contain a lower number of initial defects and have more homogeneous stress distributions; hence, bond strengths as well as adhesive failure between the adhesive and dentin can be examined more accurately.…”

Section: Discussionmentioning

confidence: 99%

Microtensile bond strengths of single-step self-etch adhesive systems to bovine dentin

et al. 2007

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The purpose of this study was to examine the microtensile bond strength of a single-step selfetch adhesive system (Clearfil tri-S Bond and One-Up Bond F Plus) to bovine dentin. Adhesive was applied to a flat dentin surface, and resin composite was bonded according to the manufacturers' instructions. After 24 h storage in distilled water at 37°C, hourglassshaped specimens were produced. These were subjected to microtensile bond strength testing at a cross-head speed of 1.0 mm/min. The results were analyzed using Student's t-test at a significance level of 0.05. Fieldemission scanning electron microscopy (FE-SEM) observations of the fractured specimens and the adhesive-treated dentin surfaces were also conducted. The bond strength of Clearfil tri-S Bond was not significantly different from that of One-Up Bond F Plus, 41.1 ± 10.1 versus 42.3 ± 6.0 MPa. Mode of failure analysis for Clearfil tri-S Bond revealed an equal distribution between the three types of failure, and the predominant mode of failure was adhesive for One-Up Bond F Plus. FE-SEM observations of dentin to which adhesive had been applied revealed that the smear layer had been removed and the collagen fibers exposed. (J. Oral Sci. 49, [183][184][185][186][187][188][189] 2007)

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